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-rw-r--r--include/linux/Kbuild1
-rw-r--r--include/linux/acpi_pmtmr.h2
-rw-r--r--include/linux/amba/pl022.h13
-rw-r--r--include/linux/ceph/auth.h92
-rw-r--r--include/linux/ceph/buffer.h39
-rw-r--r--include/linux/ceph/ceph_debug.h38
-rw-r--r--include/linux/ceph/ceph_frag.h109
-rw-r--r--include/linux/ceph/ceph_fs.h729
-rw-r--r--include/linux/ceph/ceph_hash.h13
-rw-r--r--include/linux/ceph/debugfs.h33
-rw-r--r--include/linux/ceph/decode.h201
-rw-r--r--include/linux/ceph/libceph.h249
-rw-r--r--include/linux/ceph/mdsmap.h62
-rw-r--r--include/linux/ceph/messenger.h261
-rw-r--r--include/linux/ceph/mon_client.h122
-rw-r--r--include/linux/ceph/msgpool.h25
-rw-r--r--include/linux/ceph/msgr.h175
-rw-r--r--include/linux/ceph/osd_client.h234
-rw-r--r--include/linux/ceph/osdmap.h130
-rw-r--r--include/linux/ceph/pagelist.h75
-rw-r--r--include/linux/ceph/rados.h405
-rw-r--r--include/linux/ceph/types.h29
-rw-r--r--include/linux/cgroup.h4
-rw-r--r--include/linux/compiler.h4
-rw-r--r--include/linux/coredump.h34
-rw-r--r--include/linux/cred.h2
-rw-r--r--include/linux/crush/crush.h180
-rw-r--r--include/linux/crush/hash.h17
-rw-r--r--include/linux/crush/mapper.h20
-rw-r--r--include/linux/debug_locks.h5
-rw-r--r--include/linux/dmar.h16
-rw-r--r--include/linux/dynamic_debug.h39
-rw-r--r--include/linux/edac.h4
-rw-r--r--include/linux/elevator.h1
-rw-r--r--include/linux/fdtable.h6
-rw-r--r--include/linux/fs.h2
-rw-r--r--include/linux/ftrace_event.h8
-rw-r--r--include/linux/genhd.h6
-rw-r--r--include/linux/hardirq.h11
-rw-r--r--include/linux/htirq.h5
-rw-r--r--include/linux/idr.h4
-rw-r--r--include/linux/init_task.h14
-rw-r--r--include/linux/input.h2
-rw-r--r--include/linux/interrupt.h11
-rw-r--r--include/linux/iocontext.h2
-rw-r--r--include/linux/irq.h447
-rw-r--r--include/linux/irq_work.h20
-rw-r--r--include/linux/irqdesc.h159
-rw-r--r--include/linux/irqnr.h5
-rw-r--r--include/linux/jump_label.h74
-rw-r--r--include/linux/jump_label_ref.h44
-rw-r--r--include/linux/kernel.h13
-rw-r--r--include/linux/key.h3
-rw-r--r--include/linux/kvm_host.h2
-rw-r--r--include/linux/lockdep.h21
-rw-r--r--include/linux/mm_types.h2
-rw-r--r--include/linux/module.h5
-rw-r--r--include/linux/msi.h13
-rw-r--r--include/linux/netfilter/nfnetlink_conntrack.h10
-rw-r--r--include/linux/netfilter/xt_SECMARK.h12
-rw-r--r--include/linux/nfs_fs.h2
-rw-r--r--include/linux/notifier.h10
-rw-r--r--include/linux/oprofile.h7
-rw-r--r--include/linux/pci_ids.h1
-rw-r--r--include/linux/percpu-defs.h9
-rw-r--r--include/linux/percpu.h9
-rw-r--r--include/linux/perf_event.h212
-rw-r--r--include/linux/radix-tree.h4
-rw-r--r--include/linux/rculist.h62
-rw-r--r--include/linux/rculist_nulls.h16
-rw-r--r--include/linux/rcupdate.h490
-rw-r--r--include/linux/rcutiny.h104
-rw-r--r--include/linux/rcutree.h57
-rw-r--r--include/linux/sched.h48
-rw-r--r--include/linux/security.h45
-rw-r--r--include/linux/selinux.h63
-rw-r--r--include/linux/srcu.h34
-rw-r--r--include/linux/stop_machine.h10
-rw-r--r--include/linux/sunrpc/auth_gss.h4
-rw-r--r--include/linux/thread_info.h4
-rw-r--r--include/linux/topology.h6
-rw-r--r--include/linux/tracepoint.h5
-rw-r--r--include/linux/types.h15
83 files changed, 4604 insertions, 877 deletions
diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index 626b629429ff..4e8ea8c8ec1e 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -118,7 +118,6 @@ header-y += eventpoll.h
header-y += ext2_fs.h
header-y += fadvise.h
header-y += falloc.h
-header-y += fanotify.h
header-y += fb.h
header-y += fcntl.h
header-y += fd.h
diff --git a/include/linux/acpi_pmtmr.h b/include/linux/acpi_pmtmr.h
index 7e3d2859be50..1d0ef1ae8036 100644
--- a/include/linux/acpi_pmtmr.h
+++ b/include/linux/acpi_pmtmr.h
@@ -25,8 +25,6 @@ static inline u32 acpi_pm_read_early(void)
return acpi_pm_read_verified() & ACPI_PM_MASK;
}
-extern void pmtimer_wait(unsigned);
-
#else
static inline u32 acpi_pm_read_early(void)
diff --git a/include/linux/amba/pl022.h b/include/linux/amba/pl022.h
index abf26cc47a2b..4ce98f54186b 100644
--- a/include/linux/amba/pl022.h
+++ b/include/linux/amba/pl022.h
@@ -228,6 +228,7 @@ enum ssp_chip_select {
};
+struct dma_chan;
/**
* struct pl022_ssp_master - device.platform_data for SPI controller devices.
* @num_chipselect: chipselects are used to distinguish individual
@@ -235,11 +236,16 @@ enum ssp_chip_select {
* each slave has a chipselect signal, but it's common that not
* every chipselect is connected to a slave.
* @enable_dma: if true enables DMA driven transfers.
+ * @dma_rx_param: parameter to locate an RX DMA channel.
+ * @dma_tx_param: parameter to locate a TX DMA channel.
*/
struct pl022_ssp_controller {
u16 bus_id;
u8 num_chipselect;
u8 enable_dma:1;
+ bool (*dma_filter)(struct dma_chan *chan, void *filter_param);
+ void *dma_rx_param;
+ void *dma_tx_param;
};
/**
@@ -270,20 +276,13 @@ struct pl022_ssp_controller {
* @dma_config: DMA configuration for SSP controller and peripheral
*/
struct pl022_config_chip {
- struct device *dev;
- enum ssp_loopback lbm;
enum ssp_interface iface;
enum ssp_hierarchy hierarchy;
bool slave_tx_disable;
struct ssp_clock_params clk_freq;
- enum ssp_rx_endian endian_rx;
- enum ssp_tx_endian endian_tx;
- enum ssp_data_size data_size;
enum ssp_mode com_mode;
enum ssp_rx_level_trig rx_lev_trig;
enum ssp_tx_level_trig tx_lev_trig;
- enum ssp_spi_clk_phase clk_phase;
- enum ssp_spi_clk_pol clk_pol;
enum ssp_microwire_ctrl_len ctrl_len;
enum ssp_microwire_wait_state wait_state;
enum ssp_duplex duplex;
diff --git a/include/linux/ceph/auth.h b/include/linux/ceph/auth.h
new file mode 100644
index 000000000000..7fff521d7eb5
--- /dev/null
+++ b/include/linux/ceph/auth.h
@@ -0,0 +1,92 @@
+#ifndef _FS_CEPH_AUTH_H
+#define _FS_CEPH_AUTH_H
+
+#include <linux/ceph/types.h>
+#include <linux/ceph/buffer.h>
+
+/*
+ * Abstract interface for communicating with the authenticate module.
+ * There is some handshake that takes place between us and the monitor
+ * to acquire the necessary keys. These are used to generate an
+ * 'authorizer' that we use when connecting to a service (mds, osd).
+ */
+
+struct ceph_auth_client;
+struct ceph_authorizer;
+
+struct ceph_auth_client_ops {
+ const char *name;
+
+ /*
+ * true if we are authenticated and can connect to
+ * services.
+ */
+ int (*is_authenticated)(struct ceph_auth_client *ac);
+
+ /*
+ * true if we should (re)authenticate, e.g., when our tickets
+ * are getting old and crusty.
+ */
+ int (*should_authenticate)(struct ceph_auth_client *ac);
+
+ /*
+ * build requests and process replies during monitor
+ * handshake. if handle_reply returns -EAGAIN, we build
+ * another request.
+ */
+ int (*build_request)(struct ceph_auth_client *ac, void *buf, void *end);
+ int (*handle_reply)(struct ceph_auth_client *ac, int result,
+ void *buf, void *end);
+
+ /*
+ * Create authorizer for connecting to a service, and verify
+ * the response to authenticate the service.
+ */
+ int (*create_authorizer)(struct ceph_auth_client *ac, int peer_type,
+ struct ceph_authorizer **a,
+ void **buf, size_t *len,
+ void **reply_buf, size_t *reply_len);
+ int (*verify_authorizer_reply)(struct ceph_auth_client *ac,
+ struct ceph_authorizer *a, size_t len);
+ void (*destroy_authorizer)(struct ceph_auth_client *ac,
+ struct ceph_authorizer *a);
+ void (*invalidate_authorizer)(struct ceph_auth_client *ac,
+ int peer_type);
+
+ /* reset when we (re)connect to a monitor */
+ void (*reset)(struct ceph_auth_client *ac);
+
+ void (*destroy)(struct ceph_auth_client *ac);
+};
+
+struct ceph_auth_client {
+ u32 protocol; /* CEPH_AUTH_* */
+ void *private; /* for use by protocol implementation */
+ const struct ceph_auth_client_ops *ops; /* null iff protocol==0 */
+
+ bool negotiating; /* true if negotiating protocol */
+ const char *name; /* entity name */
+ u64 global_id; /* our unique id in system */
+ const char *secret; /* our secret key */
+ unsigned want_keys; /* which services we want */
+};
+
+extern struct ceph_auth_client *ceph_auth_init(const char *name,
+ const char *secret);
+extern void ceph_auth_destroy(struct ceph_auth_client *ac);
+
+extern void ceph_auth_reset(struct ceph_auth_client *ac);
+
+extern int ceph_auth_build_hello(struct ceph_auth_client *ac,
+ void *buf, size_t len);
+extern int ceph_handle_auth_reply(struct ceph_auth_client *ac,
+ void *buf, size_t len,
+ void *reply_buf, size_t reply_len);
+extern int ceph_entity_name_encode(const char *name, void **p, void *end);
+
+extern int ceph_build_auth(struct ceph_auth_client *ac,
+ void *msg_buf, size_t msg_len);
+
+extern int ceph_auth_is_authenticated(struct ceph_auth_client *ac);
+
+#endif
diff --git a/include/linux/ceph/buffer.h b/include/linux/ceph/buffer.h
new file mode 100644
index 000000000000..58d19014068f
--- /dev/null
+++ b/include/linux/ceph/buffer.h
@@ -0,0 +1,39 @@
+#ifndef __FS_CEPH_BUFFER_H
+#define __FS_CEPH_BUFFER_H
+
+#include <linux/kref.h>
+#include <linux/mm.h>
+#include <linux/vmalloc.h>
+#include <linux/types.h>
+#include <linux/uio.h>
+
+/*
+ * a simple reference counted buffer.
+ *
+ * use kmalloc for small sizes (<= one page), vmalloc for larger
+ * sizes.
+ */
+struct ceph_buffer {
+ struct kref kref;
+ struct kvec vec;
+ size_t alloc_len;
+ bool is_vmalloc;
+};
+
+extern struct ceph_buffer *ceph_buffer_new(size_t len, gfp_t gfp);
+extern void ceph_buffer_release(struct kref *kref);
+
+static inline struct ceph_buffer *ceph_buffer_get(struct ceph_buffer *b)
+{
+ kref_get(&b->kref);
+ return b;
+}
+
+static inline void ceph_buffer_put(struct ceph_buffer *b)
+{
+ kref_put(&b->kref, ceph_buffer_release);
+}
+
+extern int ceph_decode_buffer(struct ceph_buffer **b, void **p, void *end);
+
+#endif
diff --git a/include/linux/ceph/ceph_debug.h b/include/linux/ceph/ceph_debug.h
new file mode 100644
index 000000000000..aa2e19182d99
--- /dev/null
+++ b/include/linux/ceph/ceph_debug.h
@@ -0,0 +1,38 @@
+#ifndef _FS_CEPH_DEBUG_H
+#define _FS_CEPH_DEBUG_H
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#ifdef CONFIG_CEPH_LIB_PRETTYDEBUG
+
+/*
+ * wrap pr_debug to include a filename:lineno prefix on each line.
+ * this incurs some overhead (kernel size and execution time) due to
+ * the extra function call at each call site.
+ */
+
+# if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
+extern const char *ceph_file_part(const char *s, int len);
+# define dout(fmt, ...) \
+ pr_debug("%.*s %12.12s:%-4d : " fmt, \
+ 8 - (int)sizeof(KBUILD_MODNAME), " ", \
+ ceph_file_part(__FILE__, sizeof(__FILE__)), \
+ __LINE__, ##__VA_ARGS__)
+# else
+/* faux printk call just to see any compiler warnings. */
+# define dout(fmt, ...) do { \
+ if (0) \
+ printk(KERN_DEBUG fmt, ##__VA_ARGS__); \
+ } while (0)
+# endif
+
+#else
+
+/*
+ * or, just wrap pr_debug
+ */
+# define dout(fmt, ...) pr_debug(" " fmt, ##__VA_ARGS__)
+
+#endif
+
+#endif
diff --git a/include/linux/ceph/ceph_frag.h b/include/linux/ceph/ceph_frag.h
new file mode 100644
index 000000000000..5babb8e95352
--- /dev/null
+++ b/include/linux/ceph/ceph_frag.h
@@ -0,0 +1,109 @@
+#ifndef FS_CEPH_FRAG_H
+#define FS_CEPH_FRAG_H
+
+/*
+ * "Frags" are a way to describe a subset of a 32-bit number space,
+ * using a mask and a value to match against that mask. Any given frag
+ * (subset of the number space) can be partitioned into 2^n sub-frags.
+ *
+ * Frags are encoded into a 32-bit word:
+ * 8 upper bits = "bits"
+ * 24 lower bits = "value"
+ * (We could go to 5+27 bits, but who cares.)
+ *
+ * We use the _most_ significant bits of the 24 bit value. This makes
+ * values logically sort.
+ *
+ * Unfortunately, because the "bits" field is still in the high bits, we
+ * can't sort encoded frags numerically. However, it does allow you
+ * to feed encoded frags as values into frag_contains_value.
+ */
+static inline __u32 ceph_frag_make(__u32 b, __u32 v)
+{
+ return (b << 24) |
+ (v & (0xffffffu << (24-b)) & 0xffffffu);
+}
+static inline __u32 ceph_frag_bits(__u32 f)
+{
+ return f >> 24;
+}
+static inline __u32 ceph_frag_value(__u32 f)
+{
+ return f & 0xffffffu;
+}
+static inline __u32 ceph_frag_mask(__u32 f)
+{
+ return (0xffffffu << (24-ceph_frag_bits(f))) & 0xffffffu;
+}
+static inline __u32 ceph_frag_mask_shift(__u32 f)
+{
+ return 24 - ceph_frag_bits(f);
+}
+
+static inline int ceph_frag_contains_value(__u32 f, __u32 v)
+{
+ return (v & ceph_frag_mask(f)) == ceph_frag_value(f);
+}
+static inline int ceph_frag_contains_frag(__u32 f, __u32 sub)
+{
+ /* is sub as specific as us, and contained by us? */
+ return ceph_frag_bits(sub) >= ceph_frag_bits(f) &&
+ (ceph_frag_value(sub) & ceph_frag_mask(f)) == ceph_frag_value(f);
+}
+
+static inline __u32 ceph_frag_parent(__u32 f)
+{
+ return ceph_frag_make(ceph_frag_bits(f) - 1,
+ ceph_frag_value(f) & (ceph_frag_mask(f) << 1));
+}
+static inline int ceph_frag_is_left_child(__u32 f)
+{
+ return ceph_frag_bits(f) > 0 &&
+ (ceph_frag_value(f) & (0x1000000 >> ceph_frag_bits(f))) == 0;
+}
+static inline int ceph_frag_is_right_child(__u32 f)
+{
+ return ceph_frag_bits(f) > 0 &&
+ (ceph_frag_value(f) & (0x1000000 >> ceph_frag_bits(f))) == 1;
+}
+static inline __u32 ceph_frag_sibling(__u32 f)
+{
+ return ceph_frag_make(ceph_frag_bits(f),
+ ceph_frag_value(f) ^ (0x1000000 >> ceph_frag_bits(f)));
+}
+static inline __u32 ceph_frag_left_child(__u32 f)
+{
+ return ceph_frag_make(ceph_frag_bits(f)+1, ceph_frag_value(f));
+}
+static inline __u32 ceph_frag_right_child(__u32 f)
+{
+ return ceph_frag_make(ceph_frag_bits(f)+1,
+ ceph_frag_value(f) | (0x1000000 >> (1+ceph_frag_bits(f))));
+}
+static inline __u32 ceph_frag_make_child(__u32 f, int by, int i)
+{
+ int newbits = ceph_frag_bits(f) + by;
+ return ceph_frag_make(newbits,
+ ceph_frag_value(f) | (i << (24 - newbits)));
+}
+static inline int ceph_frag_is_leftmost(__u32 f)
+{
+ return ceph_frag_value(f) == 0;
+}
+static inline int ceph_frag_is_rightmost(__u32 f)
+{
+ return ceph_frag_value(f) == ceph_frag_mask(f);
+}
+static inline __u32 ceph_frag_next(__u32 f)
+{
+ return ceph_frag_make(ceph_frag_bits(f),
+ ceph_frag_value(f) + (0x1000000 >> ceph_frag_bits(f)));
+}
+
+/*
+ * comparator to sort frags logically, as when traversing the
+ * number space in ascending order...
+ */
+int ceph_frag_compare(__u32 a, __u32 b);
+
+#endif
diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h
new file mode 100644
index 000000000000..c3c74aef289d
--- /dev/null
+++ b/include/linux/ceph/ceph_fs.h
@@ -0,0 +1,729 @@
+/*
+ * ceph_fs.h - Ceph constants and data types to share between kernel and
+ * user space.
+ *
+ * Most types in this file are defined as little-endian, and are
+ * primarily intended to describe data structures that pass over the
+ * wire or that are stored on disk.
+ *
+ * LGPL2
+ */
+
+#ifndef CEPH_FS_H
+#define CEPH_FS_H
+
+#include "msgr.h"
+#include "rados.h"
+
+/*
+ * subprotocol versions. when specific messages types or high-level
+ * protocols change, bump the affected components. we keep rev
+ * internal cluster protocols separately from the public,
+ * client-facing protocol.
+ */
+#define CEPH_OSD_PROTOCOL 8 /* cluster internal */
+#define CEPH_MDS_PROTOCOL 12 /* cluster internal */
+#define CEPH_MON_PROTOCOL 5 /* cluster internal */
+#define CEPH_OSDC_PROTOCOL 24 /* server/client */
+#define CEPH_MDSC_PROTOCOL 32 /* server/client */
+#define CEPH_MONC_PROTOCOL 15 /* server/client */
+
+
+#define CEPH_INO_ROOT 1
+#define CEPH_INO_CEPH 2 /* hidden .ceph dir */
+
+/* arbitrary limit on max # of monitors (cluster of 3 is typical) */
+#define CEPH_MAX_MON 31
+
+
+/*
+ * feature bits
+ */
+#define CEPH_FEATURE_UID (1<<0)
+#define CEPH_FEATURE_NOSRCADDR (1<<1)
+#define CEPH_FEATURE_MONCLOCKCHECK (1<<2)
+#define CEPH_FEATURE_FLOCK (1<<3)
+
+
+/*
+ * ceph_file_layout - describe data layout for a file/inode
+ */
+struct ceph_file_layout {
+ /* file -> object mapping */
+ __le32 fl_stripe_unit; /* stripe unit, in bytes. must be multiple
+ of page size. */
+ __le32 fl_stripe_count; /* over this many objects */
+ __le32 fl_object_size; /* until objects are this big, then move to
+ new objects */
+ __le32 fl_cas_hash; /* 0 = none; 1 = sha256 */
+
+ /* pg -> disk layout */
+ __le32 fl_object_stripe_unit; /* for per-object parity, if any */
+
+ /* object -> pg layout */
+ __le32 fl_pg_preferred; /* preferred primary for pg (-1 for none) */
+ __le32 fl_pg_pool; /* namespace, crush ruleset, rep level */
+} __attribute__ ((packed));
+
+#define CEPH_MIN_STRIPE_UNIT 65536
+
+int ceph_file_layout_is_valid(const struct ceph_file_layout *layout);
+
+
+/* crypto algorithms */
+#define CEPH_CRYPTO_NONE 0x0
+#define CEPH_CRYPTO_AES 0x1
+
+#define CEPH_AES_IV "cephsageyudagreg"
+
+/* security/authentication protocols */
+#define CEPH_AUTH_UNKNOWN 0x0
+#define CEPH_AUTH_NONE 0x1
+#define CEPH_AUTH_CEPHX 0x2
+
+#define CEPH_AUTH_UID_DEFAULT ((__u64) -1)
+
+
+/*********************************************
+ * message layer
+ */
+
+/*
+ * message types
+ */
+
+/* misc */
+#define CEPH_MSG_SHUTDOWN 1
+#define CEPH_MSG_PING 2
+
+/* client <-> monitor */
+#define CEPH_MSG_MON_MAP 4
+#define CEPH_MSG_MON_GET_MAP 5
+#define CEPH_MSG_STATFS 13
+#define CEPH_MSG_STATFS_REPLY 14
+#define CEPH_MSG_MON_SUBSCRIBE 15
+#define CEPH_MSG_MON_SUBSCRIBE_ACK 16
+#define CEPH_MSG_AUTH 17
+#define CEPH_MSG_AUTH_REPLY 18
+
+/* client <-> mds */
+#define CEPH_MSG_MDS_MAP 21
+
+#define CEPH_MSG_CLIENT_SESSION 22
+#define CEPH_MSG_CLIENT_RECONNECT 23
+
+#define CEPH_MSG_CLIENT_REQUEST 24
+#define CEPH_MSG_CLIENT_REQUEST_FORWARD 25
+#define CEPH_MSG_CLIENT_REPLY 26
+#define CEPH_MSG_CLIENT_CAPS 0x310
+#define CEPH_MSG_CLIENT_LEASE 0x311
+#define CEPH_MSG_CLIENT_SNAP 0x312
+#define CEPH_MSG_CLIENT_CAPRELEASE 0x313
+
+/* pool ops */
+#define CEPH_MSG_POOLOP_REPLY 48
+#define CEPH_MSG_POOLOP 49
+
+
+/* osd */
+#define CEPH_MSG_OSD_MAP 41
+#define CEPH_MSG_OSD_OP 42
+#define CEPH_MSG_OSD_OPREPLY 43
+
+/* pool operations */
+enum {
+ POOL_OP_CREATE = 0x01,
+ POOL_OP_DELETE = 0x02,
+ POOL_OP_AUID_CHANGE = 0x03,
+ POOL_OP_CREATE_SNAP = 0x11,
+ POOL_OP_DELETE_SNAP = 0x12,
+ POOL_OP_CREATE_UNMANAGED_SNAP = 0x21,
+ POOL_OP_DELETE_UNMANAGED_SNAP = 0x22,
+};
+
+struct ceph_mon_request_header {
+ __le64 have_version;
+ __le16 session_mon;
+ __le64 session_mon_tid;
+} __attribute__ ((packed));
+
+struct ceph_mon_statfs {
+ struct ceph_mon_request_header monhdr;
+ struct ceph_fsid fsid;
+} __attribute__ ((packed));
+
+struct ceph_statfs {
+ __le64 kb, kb_used, kb_avail;
+ __le64 num_objects;
+} __attribute__ ((packed));
+
+struct ceph_mon_statfs_reply {
+ struct ceph_fsid fsid;
+ __le64 version;
+ struct ceph_statfs st;
+} __attribute__ ((packed));
+
+const char *ceph_pool_op_name(int op);
+
+struct ceph_mon_poolop {
+ struct ceph_mon_request_header monhdr;
+ struct ceph_fsid fsid;
+ __le32 pool;
+ __le32 op;
+ __le64 auid;
+ __le64 snapid;
+ __le32 name_len;
+} __attribute__ ((packed));
+
+struct ceph_mon_poolop_reply {
+ struct ceph_mon_request_header monhdr;
+ struct ceph_fsid fsid;
+ __le32 reply_code;
+ __le32 epoch;
+ char has_data;
+ char data[0];
+} __attribute__ ((packed));
+
+struct ceph_mon_unmanaged_snap {
+ __le64 snapid;
+} __attribute__ ((packed));
+
+struct ceph_osd_getmap {
+ struct ceph_mon_request_header monhdr;
+ struct ceph_fsid fsid;
+ __le32 start;
+} __attribute__ ((packed));
+
+struct ceph_mds_getmap {
+ struct ceph_mon_request_header monhdr;
+ struct ceph_fsid fsid;
+} __attribute__ ((packed));
+
+struct ceph_client_mount {
+ struct ceph_mon_request_header monhdr;
+} __attribute__ ((packed));
+
+struct ceph_mon_subscribe_item {
+ __le64 have_version; __le64 have;
+ __u8 onetime;
+} __attribute__ ((packed));
+
+struct ceph_mon_subscribe_ack {
+ __le32 duration; /* seconds */
+ struct ceph_fsid fsid;
+} __attribute__ ((packed));
+
+/*
+ * mds states
+ * > 0 -> in
+ * <= 0 -> out
+ */
+#define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */
+#define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees.
+ empty log. */
+#define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */
+#define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */
+#define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */
+#define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */
+#define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */
+
+#define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */
+#define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed
+ operations (import, rename, etc.) */
+#define CEPH_MDS_STATE_RECONNECT 10 /* up, reconnect to clients */
+#define CEPH_MDS_STATE_REJOIN 11 /* up, rejoining distributed cache */
+#define CEPH_MDS_STATE_CLIENTREPLAY 12 /* up, replaying client operations */
+#define CEPH_MDS_STATE_ACTIVE 13 /* up, active */
+#define CEPH_MDS_STATE_STOPPING 14 /* up, but exporting metadata */
+
+extern const char *ceph_mds_state_name(int s);
+
+
+/*
+ * metadata lock types.
+ * - these are bitmasks.. we can compose them
+ * - they also define the lock ordering by the MDS
+ * - a few of these are internal to the mds
+ */
+#define CEPH_LOCK_DVERSION 1
+#define CEPH_LOCK_DN 2
+#define CEPH_LOCK_ISNAP 16
+#define CEPH_LOCK_IVERSION 32 /* mds internal */
+#define CEPH_LOCK_IFILE 64
+#define CEPH_LOCK_IAUTH 128
+#define CEPH_LOCK_ILINK 256
+#define CEPH_LOCK_IDFT 512 /* dir frag tree */
+#define CEPH_LOCK_INEST 1024 /* mds internal */
+#define CEPH_LOCK_IXATTR 2048
+#define CEPH_LOCK_IFLOCK 4096 /* advisory file locks */
+#define CEPH_LOCK_INO 8192 /* immutable inode bits; not a lock */
+
+/* client_session ops */
+enum {
+ CEPH_SESSION_REQUEST_OPEN,
+ CEPH_SESSION_OPEN,
+ CEPH_SESSION_REQUEST_CLOSE,
+ CEPH_SESSION_CLOSE,
+ CEPH_SESSION_REQUEST_RENEWCAPS,
+ CEPH_SESSION_RENEWCAPS,
+ CEPH_SESSION_STALE,
+ CEPH_SESSION_RECALL_STATE,
+};
+
+extern const char *ceph_session_op_name(int op);
+
+struct ceph_mds_session_head {
+ __le32 op;
+ __le64 seq;
+ struct ceph_timespec stamp;
+ __le32 max_caps, max_leases;
+} __attribute__ ((packed));
+
+/* client_request */
+/*
+ * metadata ops.
+ * & 0x001000 -> write op
+ * & 0x010000 -> follow symlink (e.g. stat(), not lstat()).
+ & & 0x100000 -> use weird ino/path trace
+ */
+#define CEPH_MDS_OP_WRITE 0x001000
+enum {
+ CEPH_MDS_OP_LOOKUP = 0x00100,
+ CEPH_MDS_OP_GETATTR = 0x00101,
+ CEPH_MDS_OP_LOOKUPHASH = 0x00102,
+ CEPH_MDS_OP_LOOKUPPARENT = 0x00103,
+
+ CEPH_MDS_OP_SETXATTR = 0x01105,
+ CEPH_MDS_OP_RMXATTR = 0x01106,
+ CEPH_MDS_OP_SETLAYOUT = 0x01107,
+ CEPH_MDS_OP_SETATTR = 0x01108,
+ CEPH_MDS_OP_SETFILELOCK= 0x01109,
+ CEPH_MDS_OP_GETFILELOCK= 0x00110,
+ CEPH_MDS_OP_SETDIRLAYOUT=0x0110a,
+
+ CEPH_MDS_OP_MKNOD = 0x01201,
+ CEPH_MDS_OP_LINK = 0x01202,
+ CEPH_MDS_OP_UNLINK = 0x01203,
+ CEPH_MDS_OP_RENAME = 0x01204,
+ CEPH_MDS_OP_MKDIR = 0x01220,
+ CEPH_MDS_OP_RMDIR = 0x01221,
+ CEPH_MDS_OP_SYMLINK = 0x01222,
+
+ CEPH_MDS_OP_CREATE = 0x01301,
+ CEPH_MDS_OP_OPEN = 0x00302,
+ CEPH_MDS_OP_READDIR = 0x00305,
+
+ CEPH_MDS_OP_LOOKUPSNAP = 0x00400,
+ CEPH_MDS_OP_MKSNAP = 0x01400,
+ CEPH_MDS_OP_RMSNAP = 0x01401,
+ CEPH_MDS_OP_LSSNAP = 0x00402,
+};
+
+extern const char *ceph_mds_op_name(int op);
+
+
+#define CEPH_SETATTR_MODE 1
+#define CEPH_SETATTR_UID 2
+#define CEPH_SETATTR_GID 4
+#define CEPH_SETATTR_MTIME 8
+#define CEPH_SETATTR_ATIME 16
+#define CEPH_SETATTR_SIZE 32
+#define CEPH_SETATTR_CTIME 64
+
+union ceph_mds_request_args {
+ struct {
+ __le32 mask; /* CEPH_CAP_* */
+ } __attribute__ ((packed)) getattr;
+ struct {
+ __le32 mode;
+ __le32 uid;
+ __le32 gid;
+ struct ceph_timespec mtime;
+ struct ceph_timespec atime;
+ __le64 size, old_size; /* old_size needed by truncate */
+ __le32 mask; /* CEPH_SETATTR_* */
+ } __attribute__ ((packed)) setattr;
+ struct {
+ __le32 frag; /* which dir fragment */
+ __le32 max_entries; /* how many dentries to grab */
+ __le32 max_bytes;
+ } __attribute__ ((packed)) readdir;
+ struct {
+ __le32 mode;
+ __le32 rdev;
+ } __attribute__ ((packed)) mknod;
+ struct {
+ __le32 mode;
+ } __attribute__ ((packed)) mkdir;
+ struct {
+ __le32 flags;
+ __le32 mode;
+ __le32 stripe_unit; /* layout for newly created file */
+ __le32 stripe_count; /* ... */
+ __le32 object_size;
+ __le32 file_replication;
+ __le32 preferred;
+ } __attribute__ ((packed)) open;
+ struct {
+ __le32 flags;
+ } __attribute__ ((packed)) setxattr;
+ struct {
+ struct ceph_file_layout layout;
+ } __attribute__ ((packed)) setlayout;
+ struct {
+ __u8 rule; /* currently fcntl or flock */
+ __u8 type; /* shared, exclusive, remove*/
+ __le64 pid; /* process id requesting the lock */
+ __le64 pid_namespace;
+ __le64 start; /* initial location to lock */
+ __le64 length; /* num bytes to lock from start */
+ __u8 wait; /* will caller wait for lock to become available? */
+ } __attribute__ ((packed)) filelock_change;
+} __attribute__ ((packed));
+
+#define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */
+#define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */
+
+struct ceph_mds_request_head {
+ __le64 oldest_client_tid;
+ __le32 mdsmap_epoch; /* on client */
+ __le32 flags; /* CEPH_MDS_FLAG_* */
+ __u8 num_retry, num_fwd; /* count retry, fwd attempts */
+ __le16 num_releases; /* # include cap/lease release records */
+ __le32 op; /* mds op code */
+ __le32 caller_uid, caller_gid;
+ __le64 ino; /* use this ino for openc, mkdir, mknod,
+ etc. (if replaying) */
+ union ceph_mds_request_args args;
+} __attribute__ ((packed));
+
+/* cap/lease release record */
+struct ceph_mds_request_release {
+ __le64 ino, cap_id; /* ino and unique cap id */
+ __le32 caps, wanted; /* new issued, wanted */
+ __le32 seq, issue_seq, mseq;
+ __le32 dname_seq; /* if releasing a dentry lease, a */
+ __le32 dname_len; /* string follows. */
+} __attribute__ ((packed));
+
+/* client reply */
+struct ceph_mds_reply_head {
+ __le32 op;
+ __le32 result;
+ __le32 mdsmap_epoch;
+ __u8 safe; /* true if committed to disk */
+ __u8 is_dentry, is_target; /* true if dentry, target inode records
+ are included with reply */
+} __attribute__ ((packed));
+
+/* one for each node split */
+struct ceph_frag_tree_split {
+ __le32 frag; /* this frag splits... */
+ __le32 by; /* ...by this many bits */
+} __attribute__ ((packed));
+
+struct ceph_frag_tree_head {
+ __le32 nsplits; /* num ceph_frag_tree_split records */
+ struct ceph_frag_tree_split splits[];
+} __attribute__ ((packed));
+
+/* capability issue, for bundling with mds reply */
+struct ceph_mds_reply_cap {
+ __le32 caps, wanted; /* caps issued, wanted */
+ __le64 cap_id;
+ __le32 seq, mseq;
+ __le64 realm; /* snap realm */
+ __u8 flags; /* CEPH_CAP_FLAG_* */
+} __attribute__ ((packed));
+
+#define CEPH_CAP_FLAG_AUTH 1 /* cap is issued by auth mds */
+
+/* inode record, for bundling with mds reply */
+struct ceph_mds_reply_inode {
+ __le64 ino;
+ __le64 snapid;
+ __le32 rdev;
+ __le64 version; /* inode version */
+ __le64 xattr_version; /* version for xattr blob */
+ struct ceph_mds_reply_cap cap; /* caps issued for this inode */
+ struct ceph_file_layout layout;
+ struct ceph_timespec ctime, mtime, atime;
+ __le32 time_warp_seq;
+ __le64 size, max_size, truncate_size;
+ __le32 truncate_seq;
+ __le32 mode, uid, gid;
+ __le32 nlink;
+ __le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */
+ struct ceph_timespec rctime;
+ struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */
+} __attribute__ ((packed));
+/* followed by frag array, then symlink string, then xattr blob */
+
+/* reply_lease follows dname, and reply_inode */
+struct ceph_mds_reply_lease {
+ __le16 mask; /* lease type(s) */
+ __le32 duration_ms; /* lease duration */
+ __le32 seq;
+} __attribute__ ((packed));
+
+struct ceph_mds_reply_dirfrag {
+ __le32 frag; /* fragment */
+ __le32 auth; /* auth mds, if this is a delegation point */
+ __le32 ndist; /* number of mds' this is replicated on */
+ __le32 dist[];
+} __attribute__ ((packed));
+
+#define CEPH_LOCK_FCNTL 1
+#define CEPH_LOCK_FLOCK 2
+
+#define CEPH_LOCK_SHARED 1
+#define CEPH_LOCK_EXCL 2
+#define CEPH_LOCK_UNLOCK 4
+
+struct ceph_filelock {
+ __le64 start;/* file offset to start lock at */
+ __le64 length; /* num bytes to lock; 0 for all following start */
+ __le64 client; /* which client holds the lock */
+ __le64 pid; /* process id holding the lock on the client */
+ __le64 pid_namespace;
+ __u8 type; /* shared lock, exclusive lock, or unlock */
+} __attribute__ ((packed));
+
+
+/* file access modes */
+#define CEPH_FILE_MODE_PIN 0
+#define CEPH_FILE_MODE_RD 1
+#define CEPH_FILE_MODE_WR 2
+#define CEPH_FILE_MODE_RDWR 3 /* RD | WR */
+#define CEPH_FILE_MODE_LAZY 4 /* lazy io */
+#define CEPH_FILE_MODE_NUM 8 /* bc these are bit fields.. mostly */
+
+int ceph_flags_to_mode(int flags);
+
+
+/* capability bits */
+#define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */
+
+/* generic cap bits */
+#define CEPH_CAP_GSHARED 1 /* client can reads */
+#define CEPH_CAP_GEXCL 2 /* client can read and update */
+#define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */
+#define CEPH_CAP_GRD 8 /* (file) client can read */
+#define CEPH_CAP_GWR 16 /* (file) client can write */
+#define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */
+#define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */
+#define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */
+
+/* per-lock shift */
+#define CEPH_CAP_SAUTH 2
+#define CEPH_CAP_SLINK 4
+#define CEPH_CAP_SXATTR 6
+#define CEPH_CAP_SFILE 8
+#define CEPH_CAP_SFLOCK 20
+
+#define CEPH_CAP_BITS 22
+
+/* composed values */
+#define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH)
+#define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH)
+#define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK)
+#define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK)
+#define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR)
+#define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR)
+#define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE)
+#define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE)
+#define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE)
+#define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE)
+#define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE)
+#define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE)
+#define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE)
+#define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE)
+#define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE)
+#define CEPH_CAP_FLOCK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFLOCK)
+#define CEPH_CAP_FLOCK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFLOCK)
+
+
+/* cap masks (for getattr) */
+#define CEPH_STAT_CAP_INODE CEPH_CAP_PIN
+#define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */
+#define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN
+#define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED
+#define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED
+#define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED
+#define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED
+#define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED
+#define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED
+#define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED
+#define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */
+#define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED
+#define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \
+ CEPH_CAP_AUTH_SHARED | \
+ CEPH_CAP_LINK_SHARED | \
+ CEPH_CAP_FILE_SHARED | \
+ CEPH_CAP_XATTR_SHARED)
+
+#define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \
+ CEPH_CAP_LINK_SHARED | \
+ CEPH_CAP_XATTR_SHARED | \
+ CEPH_CAP_FILE_SHARED)
+#define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \
+ CEPH_CAP_FILE_CACHE)
+
+#define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \
+ CEPH_CAP_LINK_EXCL | \
+ CEPH_CAP_XATTR_EXCL | \
+ CEPH_CAP_FILE_EXCL)
+#define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \
+ CEPH_CAP_FILE_EXCL)
+#define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR)
+#define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \
+ CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \
+ CEPH_CAP_PIN)
+
+#define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \
+ CEPH_LOCK_IXATTR)
+
+int ceph_caps_for_mode(int mode);
+
+enum {
+ CEPH_CAP_OP_GRANT, /* mds->client grant */
+ CEPH_CAP_OP_REVOKE, /* mds->client revoke */
+ CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */
+ CEPH_CAP_OP_EXPORT, /* mds has exported the cap */
+ CEPH_CAP_OP_IMPORT, /* mds has imported the cap */
+ CEPH_CAP_OP_UPDATE, /* client->mds update */
+ CEPH_CAP_OP_DROP, /* client->mds drop cap bits */
+ CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */
+ CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */
+ CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */
+ CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */
+ CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */
+ CEPH_CAP_OP_RENEW, /* client->mds renewal request */
+};
+
+extern const char *ceph_cap_op_name(int op);
+
+/*
+ * caps message, used for capability callbacks, acks, requests, etc.
+ */
+struct ceph_mds_caps {
+ __le32 op; /* CEPH_CAP_OP_* */
+ __le64 ino, realm;
+ __le64 cap_id;
+ __le32 seq, issue_seq;
+ __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */
+ __le32 migrate_seq;
+ __le64 snap_follows;
+ __le32 snap_trace_len;
+
+ /* authlock */
+ __le32 uid, gid, mode;
+
+ /* linklock */
+ __le32 nlink;
+
+ /* xattrlock */
+ __le32 xattr_len;
+ __le64 xattr_version;
+
+ /* filelock */
+ __le64 size, max_size, truncate_size;
+ __le32 truncate_seq;
+ struct ceph_timespec mtime, atime, ctime;
+ struct ceph_file_layout layout;
+ __le32 time_warp_seq;
+} __attribute__ ((packed));
+
+/* cap release msg head */
+struct ceph_mds_cap_release {
+ __le32 num; /* number of cap_items that follow */
+} __attribute__ ((packed));
+
+struct ceph_mds_cap_item {
+ __le64 ino;
+ __le64 cap_id;
+ __le32 migrate_seq, seq;
+} __attribute__ ((packed));
+
+#define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */
+#define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */
+#define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */
+#define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */
+
+extern const char *ceph_lease_op_name(int o);
+
+/* lease msg header */
+struct ceph_mds_lease {
+ __u8 action; /* CEPH_MDS_LEASE_* */
+ __le16 mask; /* which lease */
+ __le64 ino;
+ __le64 first, last; /* snap range */
+ __le32 seq;
+ __le32 duration_ms; /* duration of renewal */
+} __attribute__ ((packed));
+/* followed by a __le32+string for dname */
+
+/* client reconnect */
+struct ceph_mds_cap_reconnect {
+ __le64 cap_id;
+ __le32 wanted;
+ __le32 issued;
+ __le64 snaprealm;
+ __le64 pathbase; /* base ino for our path to this ino */
+ __le32 flock_len; /* size of flock state blob, if any */
+} __attribute__ ((packed));
+/* followed by flock blob */
+
+struct ceph_mds_cap_reconnect_v1 {
+ __le64 cap_id;
+ __le32 wanted;
+ __le32 issued;
+ __le64 size;
+ struct ceph_timespec mtime, atime;
+ __le64 snaprealm;
+ __le64 pathbase; /* base ino for our path to this ino */
+} __attribute__ ((packed));
+
+struct ceph_mds_snaprealm_reconnect {
+ __le64 ino; /* snap realm base */
+ __le64 seq; /* snap seq for this snap realm */
+ __le64 parent; /* parent realm */
+} __attribute__ ((packed));
+
+/*
+ * snaps
+ */
+enum {
+ CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */
+ CEPH_SNAP_OP_CREATE,
+ CEPH_SNAP_OP_DESTROY,
+ CEPH_SNAP_OP_SPLIT,
+};
+
+extern const char *ceph_snap_op_name(int o);
+
+/* snap msg header */
+struct ceph_mds_snap_head {
+ __le32 op; /* CEPH_SNAP_OP_* */
+ __le64 split; /* ino to split off, if any */
+ __le32 num_split_inos; /* # inos belonging to new child realm */
+ __le32 num_split_realms; /* # child realms udner new child realm */
+ __le32 trace_len; /* size of snap trace blob */
+} __attribute__ ((packed));
+/* followed by split ino list, then split realms, then the trace blob */
+
+/*
+ * encode info about a snaprealm, as viewed by a client
+ */
+struct ceph_mds_snap_realm {
+ __le64 ino; /* ino */
+ __le64 created; /* snap: when created */
+ __le64 parent; /* ino: parent realm */
+ __le64 parent_since; /* snap: same parent since */
+ __le64 seq; /* snap: version */
+ __le32 num_snaps;
+ __le32 num_prior_parent_snaps;
+} __attribute__ ((packed));
+/* followed by my snap list, then prior parent snap list */
+
+#endif
diff --git a/include/linux/ceph/ceph_hash.h b/include/linux/ceph/ceph_hash.h
new file mode 100644
index 000000000000..d099c3f90236
--- /dev/null
+++ b/include/linux/ceph/ceph_hash.h
@@ -0,0 +1,13 @@
+#ifndef FS_CEPH_HASH_H
+#define FS_CEPH_HASH_H
+
+#define CEPH_STR_HASH_LINUX 0x1 /* linux dcache hash */
+#define CEPH_STR_HASH_RJENKINS 0x2 /* robert jenkins' */
+
+extern unsigned ceph_str_hash_linux(const char *s, unsigned len);
+extern unsigned ceph_str_hash_rjenkins(const char *s, unsigned len);
+
+extern unsigned ceph_str_hash(int type, const char *s, unsigned len);
+extern const char *ceph_str_hash_name(int type);
+
+#endif
diff --git a/include/linux/ceph/debugfs.h b/include/linux/ceph/debugfs.h
new file mode 100644
index 000000000000..2a79702e092b
--- /dev/null
+++ b/include/linux/ceph/debugfs.h
@@ -0,0 +1,33 @@
+#ifndef _FS_CEPH_DEBUGFS_H
+#define _FS_CEPH_DEBUGFS_H
+
+#include "ceph_debug.h"
+#include "types.h"
+
+#define CEPH_DEFINE_SHOW_FUNC(name) \
+static int name##_open(struct inode *inode, struct file *file) \
+{ \
+ struct seq_file *sf; \
+ int ret; \
+ \
+ ret = single_open(file, name, NULL); \
+ sf = file->private_data; \
+ sf->private = inode->i_private; \
+ return ret; \
+} \
+ \
+static const struct file_operations name##_fops = { \
+ .open = name##_open, \
+ .read = seq_read, \
+ .llseek = seq_lseek, \
+ .release = single_release, \
+};
+
+/* debugfs.c */
+extern int ceph_debugfs_init(void);
+extern void ceph_debugfs_cleanup(void);
+extern int ceph_debugfs_client_init(struct ceph_client *client);
+extern void ceph_debugfs_client_cleanup(struct ceph_client *client);
+
+#endif
+
diff --git a/include/linux/ceph/decode.h b/include/linux/ceph/decode.h
new file mode 100644
index 000000000000..c5b6939fb32a
--- /dev/null
+++ b/include/linux/ceph/decode.h
@@ -0,0 +1,201 @@
+#ifndef __CEPH_DECODE_H
+#define __CEPH_DECODE_H
+
+#include <asm/unaligned.h>
+#include <linux/time.h>
+
+#include "types.h"
+
+/*
+ * in all cases,
+ * void **p pointer to position pointer
+ * void *end pointer to end of buffer (last byte + 1)
+ */
+
+static inline u64 ceph_decode_64(void **p)
+{
+ u64 v = get_unaligned_le64(*p);
+ *p += sizeof(u64);
+ return v;
+}
+static inline u32 ceph_decode_32(void **p)
+{
+ u32 v = get_unaligned_le32(*p);
+ *p += sizeof(u32);
+ return v;
+}
+static inline u16 ceph_decode_16(void **p)
+{
+ u16 v = get_unaligned_le16(*p);
+ *p += sizeof(u16);
+ return v;
+}
+static inline u8 ceph_decode_8(void **p)
+{
+ u8 v = *(u8 *)*p;
+ (*p)++;
+ return v;
+}
+static inline void ceph_decode_copy(void **p, void *pv, size_t n)
+{
+ memcpy(pv, *p, n);
+ *p += n;
+}
+
+/*
+ * bounds check input.
+ */
+#define ceph_decode_need(p, end, n, bad) \
+ do { \
+ if (unlikely(*(p) + (n) > (end))) \
+ goto bad; \
+ } while (0)
+
+#define ceph_decode_64_safe(p, end, v, bad) \
+ do { \
+ ceph_decode_need(p, end, sizeof(u64), bad); \
+ v = ceph_decode_64(p); \
+ } while (0)
+#define ceph_decode_32_safe(p, end, v, bad) \
+ do { \
+ ceph_decode_need(p, end, sizeof(u32), bad); \
+ v = ceph_decode_32(p); \
+ } while (0)
+#define ceph_decode_16_safe(p, end, v, bad) \
+ do { \
+ ceph_decode_need(p, end, sizeof(u16), bad); \
+ v = ceph_decode_16(p); \
+ } while (0)
+#define ceph_decode_8_safe(p, end, v, bad) \
+ do { \
+ ceph_decode_need(p, end, sizeof(u8), bad); \
+ v = ceph_decode_8(p); \
+ } while (0)
+
+#define ceph_decode_copy_safe(p, end, pv, n, bad) \
+ do { \
+ ceph_decode_need(p, end, n, bad); \
+ ceph_decode_copy(p, pv, n); \
+ } while (0)
+
+/*
+ * struct ceph_timespec <-> struct timespec
+ */
+static inline void ceph_decode_timespec(struct timespec *ts,
+ const struct ceph_timespec *tv)
+{
+ ts->tv_sec = le32_to_cpu(tv->tv_sec);
+ ts->tv_nsec = le32_to_cpu(tv->tv_nsec);
+}
+static inline void ceph_encode_timespec(struct ceph_timespec *tv,
+ const struct timespec *ts)
+{
+ tv->tv_sec = cpu_to_le32(ts->tv_sec);
+ tv->tv_nsec = cpu_to_le32(ts->tv_nsec);
+}
+
+/*
+ * sockaddr_storage <-> ceph_sockaddr
+ */
+static inline void ceph_encode_addr(struct ceph_entity_addr *a)
+{
+ __be16 ss_family = htons(a->in_addr.ss_family);
+ a->in_addr.ss_family = *(__u16 *)&ss_family;
+}
+static inline void ceph_decode_addr(struct ceph_entity_addr *a)
+{
+ __be16 ss_family = *(__be16 *)&a->in_addr.ss_family;
+ a->in_addr.ss_family = ntohs(ss_family);
+ WARN_ON(a->in_addr.ss_family == 512);
+}
+
+/*
+ * encoders
+ */
+static inline void ceph_encode_64(void **p, u64 v)
+{
+ put_unaligned_le64(v, (__le64 *)*p);
+ *p += sizeof(u64);
+}
+static inline void ceph_encode_32(void **p, u32 v)
+{
+ put_unaligned_le32(v, (__le32 *)*p);
+ *p += sizeof(u32);
+}
+static inline void ceph_encode_16(void **p, u16 v)
+{
+ put_unaligned_le16(v, (__le16 *)*p);
+ *p += sizeof(u16);
+}
+static inline void ceph_encode_8(void **p, u8 v)
+{
+ *(u8 *)*p = v;
+ (*p)++;
+}
+static inline void ceph_encode_copy(void **p, const void *s, int len)
+{
+ memcpy(*p, s, len);
+ *p += len;
+}
+
+/*
+ * filepath, string encoders
+ */
+static inline void ceph_encode_filepath(void **p, void *end,
+ u64 ino, const char *path)
+{
+ u32 len = path ? strlen(path) : 0;
+ BUG_ON(*p + sizeof(ino) + sizeof(len) + len > end);
+ ceph_encode_8(p, 1);
+ ceph_encode_64(p, ino);
+ ceph_encode_32(p, len);
+ if (len)
+ memcpy(*p, path, len);
+ *p += len;
+}
+
+static inline void ceph_encode_string(void **p, void *end,
+ const char *s, u32 len)
+{
+ BUG_ON(*p + sizeof(len) + len > end);
+ ceph_encode_32(p, len);
+ if (len)
+ memcpy(*p, s, len);
+ *p += len;
+}
+
+#define ceph_encode_need(p, end, n, bad) \
+ do { \
+ if (unlikely(*(p) + (n) > (end))) \
+ goto bad; \
+ } while (0)
+
+#define ceph_encode_64_safe(p, end, v, bad) \
+ do { \
+ ceph_encode_need(p, end, sizeof(u64), bad); \
+ ceph_encode_64(p, v); \
+ } while (0)
+#define ceph_encode_32_safe(p, end, v, bad) \
+ do { \
+ ceph_encode_need(p, end, sizeof(u32), bad); \
+ ceph_encode_32(p, v); \
+ } while (0)
+#define ceph_encode_16_safe(p, end, v, bad) \
+ do { \
+ ceph_encode_need(p, end, sizeof(u16), bad); \
+ ceph_encode_16(p, v); \
+ } while (0)
+
+#define ceph_encode_copy_safe(p, end, pv, n, bad) \
+ do { \
+ ceph_encode_need(p, end, n, bad); \
+ ceph_encode_copy(p, pv, n); \
+ } while (0)
+#define ceph_encode_string_safe(p, end, s, n, bad) \
+ do { \
+ ceph_encode_need(p, end, n, bad); \
+ ceph_encode_string(p, end, s, n); \
+ } while (0)
+
+
+#endif
diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h
new file mode 100644
index 000000000000..f22b2e941686
--- /dev/null
+++ b/include/linux/ceph/libceph.h
@@ -0,0 +1,249 @@
+#ifndef _FS_CEPH_LIBCEPH_H
+#define _FS_CEPH_LIBCEPH_H
+
+#include "ceph_debug.h"
+
+#include <asm/unaligned.h>
+#include <linux/backing-dev.h>
+#include <linux/completion.h>
+#include <linux/exportfs.h>
+#include <linux/fs.h>
+#include <linux/mempool.h>
+#include <linux/pagemap.h>
+#include <linux/wait.h>
+#include <linux/writeback.h>
+#include <linux/slab.h>
+
+#include "types.h"
+#include "messenger.h"
+#include "msgpool.h"
+#include "mon_client.h"
+#include "osd_client.h"
+#include "ceph_fs.h"
+
+/*
+ * Supported features
+ */
+#define CEPH_FEATURE_SUPPORTED_DEFAULT CEPH_FEATURE_NOSRCADDR
+#define CEPH_FEATURE_REQUIRED_DEFAULT CEPH_FEATURE_NOSRCADDR
+
+/*
+ * mount options
+ */
+#define CEPH_OPT_FSID (1<<0)
+#define CEPH_OPT_NOSHARE (1<<1) /* don't share client with other sbs */
+#define CEPH_OPT_MYIP (1<<2) /* specified my ip */
+#define CEPH_OPT_NOCRC (1<<3) /* no data crc on writes */
+
+#define CEPH_OPT_DEFAULT (0);
+
+#define ceph_set_opt(client, opt) \
+ (client)->options->flags |= CEPH_OPT_##opt;
+#define ceph_test_opt(client, opt) \
+ (!!((client)->options->flags & CEPH_OPT_##opt))
+
+struct ceph_options {
+ int flags;
+ struct ceph_fsid fsid;
+ struct ceph_entity_addr my_addr;
+ int mount_timeout;
+ int osd_idle_ttl;
+ int osd_timeout;
+ int osd_keepalive_timeout;
+
+ /*
+ * any type that can't be simply compared or doesn't need need
+ * to be compared should go beyond this point,
+ * ceph_compare_options() should be updated accordingly
+ */
+
+ struct ceph_entity_addr *mon_addr; /* should be the first
+ pointer type of args */
+ int num_mon;
+ char *name;
+ char *secret;
+};
+
+/*
+ * defaults
+ */
+#define CEPH_MOUNT_TIMEOUT_DEFAULT 60
+#define CEPH_OSD_TIMEOUT_DEFAULT 60 /* seconds */
+#define CEPH_OSD_KEEPALIVE_DEFAULT 5
+#define CEPH_OSD_IDLE_TTL_DEFAULT 60
+#define CEPH_MOUNT_RSIZE_DEFAULT (512*1024) /* readahead */
+
+#define CEPH_MSG_MAX_FRONT_LEN (16*1024*1024)
+#define CEPH_MSG_MAX_DATA_LEN (16*1024*1024)
+
+#define CEPH_AUTH_NAME_DEFAULT "guest"
+
+/*
+ * Delay telling the MDS we no longer want caps, in case we reopen
+ * the file. Delay a minimum amount of time, even if we send a cap
+ * message for some other reason. Otherwise, take the oppotunity to
+ * update the mds to avoid sending another message later.
+ */
+#define CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT 5 /* cap release delay */
+#define CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT 60 /* cap release delay */
+
+#define CEPH_CAP_RELEASE_SAFETY_DEFAULT (CEPH_CAPS_PER_RELEASE * 4)
+
+/* mount state */
+enum {
+ CEPH_MOUNT_MOUNTING,
+ CEPH_MOUNT_MOUNTED,
+ CEPH_MOUNT_UNMOUNTING,
+ CEPH_MOUNT_UNMOUNTED,
+ CEPH_MOUNT_SHUTDOWN,
+};
+
+/*
+ * subtract jiffies
+ */
+static inline unsigned long time_sub(unsigned long a, unsigned long b)
+{
+ BUG_ON(time_after(b, a));
+ return (long)a - (long)b;
+}
+
+struct ceph_mds_client;
+
+/*
+ * per client state
+ *
+ * possibly shared by multiple mount points, if they are
+ * mounting the same ceph filesystem/cluster.
+ */
+struct ceph_client {
+ struct ceph_fsid fsid;
+ bool have_fsid;
+
+ void *private;
+
+ struct ceph_options *options;
+
+ struct mutex mount_mutex; /* serialize mount attempts */
+ wait_queue_head_t auth_wq;
+ int auth_err;
+
+ int (*extra_mon_dispatch)(struct ceph_client *, struct ceph_msg *);
+
+ u32 supported_features;
+ u32 required_features;
+
+ struct ceph_messenger *msgr; /* messenger instance */
+ struct ceph_mon_client monc;
+ struct ceph_osd_client osdc;
+
+#ifdef CONFIG_DEBUG_FS
+ struct dentry *debugfs_dir;
+ struct dentry *debugfs_monmap;
+ struct dentry *debugfs_osdmap;
+#endif
+};
+
+
+
+/*
+ * snapshots
+ */
+
+/*
+ * A "snap context" is the set of existing snapshots when we
+ * write data. It is used by the OSD to guide its COW behavior.
+ *
+ * The ceph_snap_context is refcounted, and attached to each dirty
+ * page, indicating which context the dirty data belonged when it was
+ * dirtied.
+ */
+struct ceph_snap_context {
+ atomic_t nref;
+ u64 seq;
+ int num_snaps;
+ u64 snaps[];
+};
+
+static inline struct ceph_snap_context *
+ceph_get_snap_context(struct ceph_snap_context *sc)
+{
+ /*
+ printk("get_snap_context %p %d -> %d\n", sc, atomic_read(&sc->nref),
+ atomic_read(&sc->nref)+1);
+ */
+ if (sc)
+ atomic_inc(&sc->nref);
+ return sc;
+}
+
+static inline void ceph_put_snap_context(struct ceph_snap_context *sc)
+{
+ if (!sc)
+ return;
+ /*
+ printk("put_snap_context %p %d -> %d\n", sc, atomic_read(&sc->nref),
+ atomic_read(&sc->nref)-1);
+ */
+ if (atomic_dec_and_test(&sc->nref)) {
+ /*printk(" deleting snap_context %p\n", sc);*/
+ kfree(sc);
+ }
+}
+
+/*
+ * calculate the number of pages a given length and offset map onto,
+ * if we align the data.
+ */
+static inline int calc_pages_for(u64 off, u64 len)
+{
+ return ((off+len+PAGE_CACHE_SIZE-1) >> PAGE_CACHE_SHIFT) -
+ (off >> PAGE_CACHE_SHIFT);
+}
+
+/* ceph_common.c */
+extern const char *ceph_msg_type_name(int type);
+extern int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid);
+extern struct kmem_cache *ceph_inode_cachep;
+extern struct kmem_cache *ceph_cap_cachep;
+extern struct kmem_cache *ceph_dentry_cachep;
+extern struct kmem_cache *ceph_file_cachep;
+
+extern int ceph_parse_options(struct ceph_options **popt, char *options,
+ const char *dev_name, const char *dev_name_end,
+ int (*parse_extra_token)(char *c, void *private),
+ void *private);
+extern void ceph_destroy_options(struct ceph_options *opt);
+extern int ceph_compare_options(struct ceph_options *new_opt,
+ struct ceph_client *client);
+extern struct ceph_client *ceph_create_client(struct ceph_options *opt,
+ void *private);
+extern u64 ceph_client_id(struct ceph_client *client);
+extern void ceph_destroy_client(struct ceph_client *client);
+extern int __ceph_open_session(struct ceph_client *client,
+ unsigned long started);
+extern int ceph_open_session(struct ceph_client *client);
+
+/* pagevec.c */
+extern void ceph_release_page_vector(struct page **pages, int num_pages);
+
+extern struct page **ceph_get_direct_page_vector(const char __user *data,
+ int num_pages,
+ loff_t off, size_t len);
+extern void ceph_put_page_vector(struct page **pages, int num_pages);
+extern void ceph_release_page_vector(struct page **pages, int num_pages);
+extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags);
+extern int ceph_copy_user_to_page_vector(struct page **pages,
+ const char __user *data,
+ loff_t off, size_t len);
+extern int ceph_copy_to_page_vector(struct page **pages,
+ const char *data,
+ loff_t off, size_t len);
+extern int ceph_copy_from_page_vector(struct page **pages,
+ char *data,
+ loff_t off, size_t len);
+extern int ceph_copy_page_vector_to_user(struct page **pages, char __user *data,
+ loff_t off, size_t len);
+extern void ceph_zero_page_vector_range(int off, int len, struct page **pages);
+
+
+#endif /* _FS_CEPH_SUPER_H */
diff --git a/include/linux/ceph/mdsmap.h b/include/linux/ceph/mdsmap.h
new file mode 100644
index 000000000000..4c5cb0880bba
--- /dev/null
+++ b/include/linux/ceph/mdsmap.h
@@ -0,0 +1,62 @@
+#ifndef _FS_CEPH_MDSMAP_H
+#define _FS_CEPH_MDSMAP_H
+
+#include "types.h"
+
+/*
+ * mds map - describe servers in the mds cluster.
+ *
+ * we limit fields to those the client actually xcares about
+ */
+struct ceph_mds_info {
+ u64 global_id;
+ struct ceph_entity_addr addr;
+ s32 state;
+ int num_export_targets;
+ bool laggy;
+ u32 *export_targets;
+};
+
+struct ceph_mdsmap {
+ u32 m_epoch, m_client_epoch, m_last_failure;
+ u32 m_root;
+ u32 m_session_timeout; /* seconds */
+ u32 m_session_autoclose; /* seconds */
+ u64 m_max_file_size;
+ u32 m_max_mds; /* size of m_addr, m_state arrays */
+ struct ceph_mds_info *m_info;
+
+ /* which object pools file data can be stored in */
+ int m_num_data_pg_pools;
+ u32 *m_data_pg_pools;
+ u32 m_cas_pg_pool;
+};
+
+static inline struct ceph_entity_addr *
+ceph_mdsmap_get_addr(struct ceph_mdsmap *m, int w)
+{
+ if (w >= m->m_max_mds)
+ return NULL;
+ return &m->m_info[w].addr;
+}
+
+static inline int ceph_mdsmap_get_state(struct ceph_mdsmap *m, int w)
+{
+ BUG_ON(w < 0);
+ if (w >= m->m_max_mds)
+ return CEPH_MDS_STATE_DNE;
+ return m->m_info[w].state;
+}
+
+static inline bool ceph_mdsmap_is_laggy(struct ceph_mdsmap *m, int w)
+{
+ if (w >= 0 && w < m->m_max_mds)
+ return m->m_info[w].laggy;
+ return false;
+}
+
+extern int ceph_mdsmap_get_random_mds(struct ceph_mdsmap *m);
+extern struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end);
+extern void ceph_mdsmap_destroy(struct ceph_mdsmap *m);
+
+#endif
diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h
new file mode 100644
index 000000000000..5956d62c3057
--- /dev/null
+++ b/include/linux/ceph/messenger.h
@@ -0,0 +1,261 @@
+#ifndef __FS_CEPH_MESSENGER_H
+#define __FS_CEPH_MESSENGER_H
+
+#include <linux/kref.h>
+#include <linux/mutex.h>
+#include <linux/net.h>
+#include <linux/radix-tree.h>
+#include <linux/uio.h>
+#include <linux/version.h>
+#include <linux/workqueue.h>
+
+#include "types.h"
+#include "buffer.h"
+
+struct ceph_msg;
+struct ceph_connection;
+
+extern struct workqueue_struct *ceph_msgr_wq; /* receive work queue */
+
+/*
+ * Ceph defines these callbacks for handling connection events.
+ */
+struct ceph_connection_operations {
+ struct ceph_connection *(*get)(struct ceph_connection *);
+ void (*put)(struct ceph_connection *);
+
+ /* handle an incoming message. */
+ void (*dispatch) (struct ceph_connection *con, struct ceph_msg *m);
+
+ /* authorize an outgoing connection */
+ int (*get_authorizer) (struct ceph_connection *con,
+ void **buf, int *len, int *proto,
+ void **reply_buf, int *reply_len, int force_new);
+ int (*verify_authorizer_reply) (struct ceph_connection *con, int len);
+ int (*invalidate_authorizer)(struct ceph_connection *con);
+
+ /* protocol version mismatch */
+ void (*bad_proto) (struct ceph_connection *con);
+
+ /* there was some error on the socket (disconnect, whatever) */
+ void (*fault) (struct ceph_connection *con);
+
+ /* a remote host as terminated a message exchange session, and messages
+ * we sent (or they tried to send us) may be lost. */
+ void (*peer_reset) (struct ceph_connection *con);
+
+ struct ceph_msg * (*alloc_msg) (struct ceph_connection *con,
+ struct ceph_msg_header *hdr,
+ int *skip);
+};
+
+/* use format string %s%d */
+#define ENTITY_NAME(n) ceph_entity_type_name((n).type), le64_to_cpu((n).num)
+
+struct ceph_messenger {
+ struct ceph_entity_inst inst; /* my name+address */
+ struct ceph_entity_addr my_enc_addr;
+ struct page *zero_page; /* used in certain error cases */
+
+ bool nocrc;
+
+ /*
+ * the global_seq counts connections i (attempt to) initiate
+ * in order to disambiguate certain connect race conditions.
+ */
+ u32 global_seq;
+ spinlock_t global_seq_lock;
+
+ u32 supported_features;
+ u32 required_features;
+};
+
+/*
+ * a single message. it contains a header (src, dest, message type, etc.),
+ * footer (crc values, mainly), a "front" message body, and possibly a
+ * data payload (stored in some number of pages).
+ */
+struct ceph_msg {
+ struct ceph_msg_header hdr; /* header */
+ struct ceph_msg_footer footer; /* footer */
+ struct kvec front; /* unaligned blobs of message */
+ struct ceph_buffer *middle;
+ struct page **pages; /* data payload. NOT OWNER. */
+ unsigned nr_pages; /* size of page array */
+ struct ceph_pagelist *pagelist; /* instead of pages */
+ struct list_head list_head;
+ struct kref kref;
+ struct bio *bio; /* instead of pages/pagelist */
+ struct bio *bio_iter; /* bio iterator */
+ int bio_seg; /* current bio segment */
+ struct ceph_pagelist *trail; /* the trailing part of the data */
+ bool front_is_vmalloc;
+ bool more_to_follow;
+ bool needs_out_seq;
+ int front_max;
+
+ struct ceph_msgpool *pool;
+};
+
+struct ceph_msg_pos {
+ int page, page_pos; /* which page; offset in page */
+ int data_pos; /* offset in data payload */
+ int did_page_crc; /* true if we've calculated crc for current page */
+};
+
+/* ceph connection fault delay defaults, for exponential backoff */
+#define BASE_DELAY_INTERVAL (HZ/2)
+#define MAX_DELAY_INTERVAL (5 * 60 * HZ)
+
+/*
+ * ceph_connection state bit flags
+ *
+ * QUEUED and BUSY are used together to ensure that only a single
+ * thread is currently opening, reading or writing data to the socket.
+ */
+#define LOSSYTX 0 /* we can close channel or drop messages on errors */
+#define CONNECTING 1
+#define NEGOTIATING 2
+#define KEEPALIVE_PENDING 3
+#define WRITE_PENDING 4 /* we have data ready to send */
+#define QUEUED 5 /* there is work queued on this connection */
+#define BUSY 6 /* work is being done */
+#define STANDBY 8 /* no outgoing messages, socket closed. we keep
+ * the ceph_connection around to maintain shared
+ * state with the peer. */
+#define CLOSED 10 /* we've closed the connection */
+#define SOCK_CLOSED 11 /* socket state changed to closed */
+#define OPENING 13 /* open connection w/ (possibly new) peer */
+#define DEAD 14 /* dead, about to kfree */
+
+/*
+ * A single connection with another host.
+ *
+ * We maintain a queue of outgoing messages, and some session state to
+ * ensure that we can preserve the lossless, ordered delivery of
+ * messages in the case of a TCP disconnect.
+ */
+struct ceph_connection {
+ void *private;
+ atomic_t nref;
+
+ const struct ceph_connection_operations *ops;
+
+ struct ceph_messenger *msgr;
+ struct socket *sock;
+ unsigned long state; /* connection state (see flags above) */
+ const char *error_msg; /* error message, if any */
+
+ struct ceph_entity_addr peer_addr; /* peer address */
+ struct ceph_entity_name peer_name; /* peer name */
+ struct ceph_entity_addr peer_addr_for_me;
+ unsigned peer_features;
+ u32 connect_seq; /* identify the most recent connection
+ attempt for this connection, client */
+ u32 peer_global_seq; /* peer's global seq for this connection */
+
+ int auth_retry; /* true if we need a newer authorizer */
+ void *auth_reply_buf; /* where to put the authorizer reply */
+ int auth_reply_buf_len;
+
+ struct mutex mutex;
+
+ /* out queue */
+ struct list_head out_queue;
+ struct list_head out_sent; /* sending or sent but unacked */
+ u64 out_seq; /* last message queued for send */
+ bool out_keepalive_pending;
+
+ u64 in_seq, in_seq_acked; /* last message received, acked */
+
+ /* connection negotiation temps */
+ char in_banner[CEPH_BANNER_MAX_LEN];
+ union {
+ struct { /* outgoing connection */
+ struct ceph_msg_connect out_connect;
+ struct ceph_msg_connect_reply in_reply;
+ };
+ struct { /* incoming */
+ struct ceph_msg_connect in_connect;
+ struct ceph_msg_connect_reply out_reply;
+ };
+ };
+ struct ceph_entity_addr actual_peer_addr;
+
+ /* message out temps */
+ struct ceph_msg *out_msg; /* sending message (== tail of
+ out_sent) */
+ bool out_msg_done;
+ struct ceph_msg_pos out_msg_pos;
+
+ struct kvec out_kvec[8], /* sending header/footer data */
+ *out_kvec_cur;
+ int out_kvec_left; /* kvec's left in out_kvec */
+ int out_skip; /* skip this many bytes */
+ int out_kvec_bytes; /* total bytes left */
+ bool out_kvec_is_msg; /* kvec refers to out_msg */
+ int out_more; /* there is more data after the kvecs */
+ __le64 out_temp_ack; /* for writing an ack */
+
+ /* message in temps */
+ struct ceph_msg_header in_hdr;
+ struct ceph_msg *in_msg;
+ struct ceph_msg_pos in_msg_pos;
+ u32 in_front_crc, in_middle_crc, in_data_crc; /* calculated crc */
+
+ char in_tag; /* protocol control byte */
+ int in_base_pos; /* bytes read */
+ __le64 in_temp_ack; /* for reading an ack */
+
+ struct delayed_work work; /* send|recv work */
+ unsigned long delay; /* current delay interval */
+};
+
+
+extern const char *ceph_pr_addr(const struct sockaddr_storage *ss);
+extern int ceph_parse_ips(const char *c, const char *end,
+ struct ceph_entity_addr *addr,
+ int max_count, int *count);
+
+
+extern int ceph_msgr_init(void);
+extern void ceph_msgr_exit(void);
+extern void ceph_msgr_flush(void);
+
+extern struct ceph_messenger *ceph_messenger_create(
+ struct ceph_entity_addr *myaddr,
+ u32 features, u32 required);
+extern void ceph_messenger_destroy(struct ceph_messenger *);
+
+extern void ceph_con_init(struct ceph_messenger *msgr,
+ struct ceph_connection *con);
+extern void ceph_con_open(struct ceph_connection *con,
+ struct ceph_entity_addr *addr);
+extern bool ceph_con_opened(struct ceph_connection *con);
+extern void ceph_con_close(struct ceph_connection *con);
+extern void ceph_con_send(struct ceph_connection *con, struct ceph_msg *msg);
+extern void ceph_con_revoke(struct ceph_connection *con, struct ceph_msg *msg);
+extern void ceph_con_revoke_message(struct ceph_connection *con,
+ struct ceph_msg *msg);
+extern void ceph_con_keepalive(struct ceph_connection *con);
+extern struct ceph_connection *ceph_con_get(struct ceph_connection *con);
+extern void ceph_con_put(struct ceph_connection *con);
+
+extern struct ceph_msg *ceph_msg_new(int type, int front_len, gfp_t flags);
+extern void ceph_msg_kfree(struct ceph_msg *m);
+
+
+static inline struct ceph_msg *ceph_msg_get(struct ceph_msg *msg)
+{
+ kref_get(&msg->kref);
+ return msg;
+}
+extern void ceph_msg_last_put(struct kref *kref);
+static inline void ceph_msg_put(struct ceph_msg *msg)
+{
+ kref_put(&msg->kref, ceph_msg_last_put);
+}
+
+extern void ceph_msg_dump(struct ceph_msg *msg);
+
+#endif
diff --git a/include/linux/ceph/mon_client.h b/include/linux/ceph/mon_client.h
new file mode 100644
index 000000000000..545f85917780
--- /dev/null
+++ b/include/linux/ceph/mon_client.h
@@ -0,0 +1,122 @@
+#ifndef _FS_CEPH_MON_CLIENT_H
+#define _FS_CEPH_MON_CLIENT_H
+
+#include <linux/completion.h>
+#include <linux/kref.h>
+#include <linux/rbtree.h>
+
+#include "messenger.h"
+
+struct ceph_client;
+struct ceph_mount_args;
+struct ceph_auth_client;
+
+/*
+ * The monitor map enumerates the set of all monitors.
+ */
+struct ceph_monmap {
+ struct ceph_fsid fsid;
+ u32 epoch;
+ u32 num_mon;
+ struct ceph_entity_inst mon_inst[0];
+};
+
+struct ceph_mon_client;
+struct ceph_mon_generic_request;
+
+
+/*
+ * Generic mechanism for resending monitor requests.
+ */
+typedef void (*ceph_monc_request_func_t)(struct ceph_mon_client *monc,
+ int newmon);
+
+/* a pending monitor request */
+struct ceph_mon_request {
+ struct ceph_mon_client *monc;
+ struct delayed_work delayed_work;
+ unsigned long delay;
+ ceph_monc_request_func_t do_request;
+};
+
+/*
+ * ceph_mon_generic_request is being used for the statfs and poolop requests
+ * which are bening done a bit differently because we need to get data back
+ * to the caller
+ */
+struct ceph_mon_generic_request {
+ struct kref kref;
+ u64 tid;
+ struct rb_node node;
+ int result;
+ void *buf;
+ int buf_len;
+ struct completion completion;
+ struct ceph_msg *request; /* original request */
+ struct ceph_msg *reply; /* and reply */
+};
+
+struct ceph_mon_client {
+ struct ceph_client *client;
+ struct ceph_monmap *monmap;
+
+ struct mutex mutex;
+ struct delayed_work delayed_work;
+
+ struct ceph_auth_client *auth;
+ struct ceph_msg *m_auth, *m_auth_reply, *m_subscribe, *m_subscribe_ack;
+ int pending_auth;
+
+ bool hunting;
+ int cur_mon; /* last monitor i contacted */
+ unsigned long sub_sent, sub_renew_after;
+ struct ceph_connection *con;
+ bool have_fsid;
+
+ /* pending generic requests */
+ struct rb_root generic_request_tree;
+ int num_generic_requests;
+ u64 last_tid;
+
+ /* mds/osd map */
+ int want_mdsmap;
+ int want_next_osdmap; /* 1 = want, 2 = want+asked */
+ u32 have_osdmap, have_mdsmap;
+
+#ifdef CONFIG_DEBUG_FS
+ struct dentry *debugfs_file;
+#endif
+};
+
+extern struct ceph_monmap *ceph_monmap_decode(void *p, void *end);
+extern int ceph_monmap_contains(struct ceph_monmap *m,
+ struct ceph_entity_addr *addr);
+
+extern int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl);
+extern void ceph_monc_stop(struct ceph_mon_client *monc);
+
+/*
+ * The model here is to indicate that we need a new map of at least
+ * epoch @want, and also call in when we receive a map. We will
+ * periodically rerequest the map from the monitor cluster until we
+ * get what we want.
+ */
+extern int ceph_monc_got_mdsmap(struct ceph_mon_client *monc, u32 have);
+extern int ceph_monc_got_osdmap(struct ceph_mon_client *monc, u32 have);
+
+extern void ceph_monc_request_next_osdmap(struct ceph_mon_client *monc);
+
+extern int ceph_monc_do_statfs(struct ceph_mon_client *monc,
+ struct ceph_statfs *buf);
+
+extern int ceph_monc_open_session(struct ceph_mon_client *monc);
+
+extern int ceph_monc_validate_auth(struct ceph_mon_client *monc);
+
+extern int ceph_monc_create_snapid(struct ceph_mon_client *monc,
+ u32 pool, u64 *snapid);
+
+extern int ceph_monc_delete_snapid(struct ceph_mon_client *monc,
+ u32 pool, u64 snapid);
+
+#endif
diff --git a/include/linux/ceph/msgpool.h b/include/linux/ceph/msgpool.h
new file mode 100644
index 000000000000..a362605f9368
--- /dev/null
+++ b/include/linux/ceph/msgpool.h
@@ -0,0 +1,25 @@
+#ifndef _FS_CEPH_MSGPOOL
+#define _FS_CEPH_MSGPOOL
+
+#include <linux/mempool.h>
+#include "messenger.h"
+
+/*
+ * we use memory pools for preallocating messages we may receive, to
+ * avoid unexpected OOM conditions.
+ */
+struct ceph_msgpool {
+ const char *name;
+ mempool_t *pool;
+ int front_len; /* preallocated payload size */
+};
+
+extern int ceph_msgpool_init(struct ceph_msgpool *pool,
+ int front_len, int size, bool blocking,
+ const char *name);
+extern void ceph_msgpool_destroy(struct ceph_msgpool *pool);
+extern struct ceph_msg *ceph_msgpool_get(struct ceph_msgpool *,
+ int front_len);
+extern void ceph_msgpool_put(struct ceph_msgpool *, struct ceph_msg *);
+
+#endif
diff --git a/include/linux/ceph/msgr.h b/include/linux/ceph/msgr.h
new file mode 100644
index 000000000000..680d3d648cac
--- /dev/null
+++ b/include/linux/ceph/msgr.h
@@ -0,0 +1,175 @@
+#ifndef CEPH_MSGR_H
+#define CEPH_MSGR_H
+
+/*
+ * Data types for message passing layer used by Ceph.
+ */
+
+#define CEPH_MON_PORT 6789 /* default monitor port */
+
+/*
+ * client-side processes will try to bind to ports in this
+ * range, simply for the benefit of tools like nmap or wireshark
+ * that would like to identify the protocol.
+ */
+#define CEPH_PORT_FIRST 6789
+#define CEPH_PORT_START 6800 /* non-monitors start here */
+#define CEPH_PORT_LAST 6900
+
+/*
+ * tcp connection banner. include a protocol version. and adjust
+ * whenever the wire protocol changes. try to keep this string length
+ * constant.
+ */
+#define CEPH_BANNER "ceph v027"
+#define CEPH_BANNER_MAX_LEN 30
+
+
+/*
+ * Rollover-safe type and comparator for 32-bit sequence numbers.
+ * Comparator returns -1, 0, or 1.
+ */
+typedef __u32 ceph_seq_t;
+
+static inline __s32 ceph_seq_cmp(__u32 a, __u32 b)
+{
+ return (__s32)a - (__s32)b;
+}
+
+
+/*
+ * entity_name -- logical name for a process participating in the
+ * network, e.g. 'mds0' or 'osd3'.
+ */
+struct ceph_entity_name {
+ __u8 type; /* CEPH_ENTITY_TYPE_* */
+ __le64 num;
+} __attribute__ ((packed));
+
+#define CEPH_ENTITY_TYPE_MON 0x01
+#define CEPH_ENTITY_TYPE_MDS 0x02
+#define CEPH_ENTITY_TYPE_OSD 0x04
+#define CEPH_ENTITY_TYPE_CLIENT 0x08
+#define CEPH_ENTITY_TYPE_AUTH 0x20
+
+#define CEPH_ENTITY_TYPE_ANY 0xFF
+
+extern const char *ceph_entity_type_name(int type);
+
+/*
+ * entity_addr -- network address
+ */
+struct ceph_entity_addr {
+ __le32 type;
+ __le32 nonce; /* unique id for process (e.g. pid) */
+ struct sockaddr_storage in_addr;
+} __attribute__ ((packed));
+
+struct ceph_entity_inst {
+ struct ceph_entity_name name;
+ struct ceph_entity_addr addr;
+} __attribute__ ((packed));
+
+
+/* used by message exchange protocol */
+#define CEPH_MSGR_TAG_READY 1 /* server->client: ready for messages */
+#define CEPH_MSGR_TAG_RESETSESSION 2 /* server->client: reset, try again */
+#define CEPH_MSGR_TAG_WAIT 3 /* server->client: wait for racing
+ incoming connection */
+#define CEPH_MSGR_TAG_RETRY_SESSION 4 /* server->client + cseq: try again
+ with higher cseq */
+#define CEPH_MSGR_TAG_RETRY_GLOBAL 5 /* server->client + gseq: try again
+ with higher gseq */
+#define CEPH_MSGR_TAG_CLOSE 6 /* closing pipe */
+#define CEPH_MSGR_TAG_MSG 7 /* message */
+#define CEPH_MSGR_TAG_ACK 8 /* message ack */
+#define CEPH_MSGR_TAG_KEEPALIVE 9 /* just a keepalive byte! */
+#define CEPH_MSGR_TAG_BADPROTOVER 10 /* bad protocol version */
+#define CEPH_MSGR_TAG_BADAUTHORIZER 11 /* bad authorizer */
+#define CEPH_MSGR_TAG_FEATURES 12 /* insufficient features */
+
+
+/*
+ * connection negotiation
+ */
+struct ceph_msg_connect {
+ __le64 features; /* supported feature bits */
+ __le32 host_type; /* CEPH_ENTITY_TYPE_* */
+ __le32 global_seq; /* count connections initiated by this host */
+ __le32 connect_seq; /* count connections initiated in this session */
+ __le32 protocol_version;
+ __le32 authorizer_protocol;
+ __le32 authorizer_len;
+ __u8 flags; /* CEPH_MSG_CONNECT_* */
+} __attribute__ ((packed));
+
+struct ceph_msg_connect_reply {
+ __u8 tag;
+ __le64 features; /* feature bits for this session */
+ __le32 global_seq;
+ __le32 connect_seq;
+ __le32 protocol_version;
+ __le32 authorizer_len;
+ __u8 flags;
+} __attribute__ ((packed));
+
+#define CEPH_MSG_CONNECT_LOSSY 1 /* messages i send may be safely dropped */
+
+
+/*
+ * message header
+ */
+struct ceph_msg_header_old {
+ __le64 seq; /* message seq# for this session */
+ __le64 tid; /* transaction id */
+ __le16 type; /* message type */
+ __le16 priority; /* priority. higher value == higher priority */
+ __le16 version; /* version of message encoding */
+
+ __le32 front_len; /* bytes in main payload */
+ __le32 middle_len;/* bytes in middle payload */
+ __le32 data_len; /* bytes of data payload */
+ __le16 data_off; /* sender: include full offset;
+ receiver: mask against ~PAGE_MASK */
+
+ struct ceph_entity_inst src, orig_src;
+ __le32 reserved;
+ __le32 crc; /* header crc32c */
+} __attribute__ ((packed));
+
+struct ceph_msg_header {
+ __le64 seq; /* message seq# for this session */
+ __le64 tid; /* transaction id */
+ __le16 type; /* message type */
+ __le16 priority; /* priority. higher value == higher priority */
+ __le16 version; /* version of message encoding */
+
+ __le32 front_len; /* bytes in main payload */
+ __le32 middle_len;/* bytes in middle payload */
+ __le32 data_len; /* bytes of data payload */
+ __le16 data_off; /* sender: include full offset;
+ receiver: mask against ~PAGE_MASK */
+
+ struct ceph_entity_name src;
+ __le32 reserved;
+ __le32 crc; /* header crc32c */
+} __attribute__ ((packed));
+
+#define CEPH_MSG_PRIO_LOW 64
+#define CEPH_MSG_PRIO_DEFAULT 127
+#define CEPH_MSG_PRIO_HIGH 196
+#define CEPH_MSG_PRIO_HIGHEST 255
+
+/*
+ * follows data payload
+ */
+struct ceph_msg_footer {
+ __le32 front_crc, middle_crc, data_crc;
+ __u8 flags;
+} __attribute__ ((packed));
+
+#define CEPH_MSG_FOOTER_COMPLETE (1<<0) /* msg wasn't aborted */
+#define CEPH_MSG_FOOTER_NOCRC (1<<1) /* no data crc */
+
+
+#endif
diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h
new file mode 100644
index 000000000000..6c91fb032c39
--- /dev/null
+++ b/include/linux/ceph/osd_client.h
@@ -0,0 +1,234 @@
+#ifndef _FS_CEPH_OSD_CLIENT_H
+#define _FS_CEPH_OSD_CLIENT_H
+
+#include <linux/completion.h>
+#include <linux/kref.h>
+#include <linux/mempool.h>
+#include <linux/rbtree.h>
+
+#include "types.h"
+#include "osdmap.h"
+#include "messenger.h"
+
+struct ceph_msg;
+struct ceph_snap_context;
+struct ceph_osd_request;
+struct ceph_osd_client;
+struct ceph_authorizer;
+struct ceph_pagelist;
+
+/*
+ * completion callback for async writepages
+ */
+typedef void (*ceph_osdc_callback_t)(struct ceph_osd_request *,
+ struct ceph_msg *);
+
+/* a given osd we're communicating with */
+struct ceph_osd {
+ atomic_t o_ref;
+ struct ceph_osd_client *o_osdc;
+ int o_osd;
+ int o_incarnation;
+ struct rb_node o_node;
+ struct ceph_connection o_con;
+ struct list_head o_requests;
+ struct list_head o_osd_lru;
+ struct ceph_authorizer *o_authorizer;
+ void *o_authorizer_buf, *o_authorizer_reply_buf;
+ size_t o_authorizer_buf_len, o_authorizer_reply_buf_len;
+ unsigned long lru_ttl;
+ int o_marked_for_keepalive;
+ struct list_head o_keepalive_item;
+};
+
+/* an in-flight request */
+struct ceph_osd_request {
+ u64 r_tid; /* unique for this client */
+ struct rb_node r_node;
+ struct list_head r_req_lru_item;
+ struct list_head r_osd_item;
+ struct ceph_osd *r_osd;
+ struct ceph_pg r_pgid;
+ int r_pg_osds[CEPH_PG_MAX_SIZE];
+ int r_num_pg_osds;
+
+ struct ceph_connection *r_con_filling_msg;
+
+ struct ceph_msg *r_request, *r_reply;
+ int r_result;
+ int r_flags; /* any additional flags for the osd */
+ u32 r_sent; /* >0 if r_request is sending/sent */
+ int r_got_reply;
+
+ struct ceph_osd_client *r_osdc;
+ struct kref r_kref;
+ bool r_mempool;
+ struct completion r_completion, r_safe_completion;
+ ceph_osdc_callback_t r_callback, r_safe_callback;
+ struct ceph_eversion r_reassert_version;
+ struct list_head r_unsafe_item;
+
+ struct inode *r_inode; /* for use by callbacks */
+ void *r_priv; /* ditto */
+
+ char r_oid[40]; /* object name */
+ int r_oid_len;
+ unsigned long r_stamp; /* send OR check time */
+ bool r_resend; /* msg send failed, needs retry */
+
+ struct ceph_file_layout r_file_layout;
+ struct ceph_snap_context *r_snapc; /* snap context for writes */
+ unsigned r_num_pages; /* size of page array (follows) */
+ struct page **r_pages; /* pages for data payload */
+ int r_pages_from_pool;
+ int r_own_pages; /* if true, i own page list */
+#ifdef CONFIG_BLOCK
+ struct bio *r_bio; /* instead of pages */
+#endif
+
+ struct ceph_pagelist *r_trail; /* trailing part of the data */
+};
+
+struct ceph_osd_client {
+ struct ceph_client *client;
+
+ struct ceph_osdmap *osdmap; /* current map */
+ struct rw_semaphore map_sem;
+ struct completion map_waiters;
+ u64 last_requested_map;
+
+ struct mutex request_mutex;
+ struct rb_root osds; /* osds */
+ struct list_head osd_lru; /* idle osds */
+ u64 timeout_tid; /* tid of timeout triggering rq */
+ u64 last_tid; /* tid of last request */
+ struct rb_root requests; /* pending requests */
+ struct list_head req_lru; /* pending requests lru */
+ int num_requests;
+ struct delayed_work timeout_work;
+ struct delayed_work osds_timeout_work;
+#ifdef CONFIG_DEBUG_FS
+ struct dentry *debugfs_file;
+#endif
+
+ mempool_t *req_mempool;
+
+ struct ceph_msgpool msgpool_op;
+ struct ceph_msgpool msgpool_op_reply;
+};
+
+struct ceph_osd_req_op {
+ u16 op; /* CEPH_OSD_OP_* */
+ u32 flags; /* CEPH_OSD_FLAG_* */
+ union {
+ struct {
+ u64 offset, length;
+ u64 truncate_size;
+ u32 truncate_seq;
+ } extent;
+ struct {
+ const char *name;
+ u32 name_len;
+ const char *val;
+ u32 value_len;
+ __u8 cmp_op; /* CEPH_OSD_CMPXATTR_OP_* */
+ __u8 cmp_mode; /* CEPH_OSD_CMPXATTR_MODE_* */
+ } xattr;
+ struct {
+ const char *class_name;
+ __u8 class_len;
+ const char *method_name;
+ __u8 method_len;
+ __u8 argc;
+ const char *indata;
+ u32 indata_len;
+ } cls;
+ struct {
+ u64 cookie, count;
+ } pgls;
+ struct {
+ u64 snapid;
+ } snap;
+ };
+ u32 payload_len;
+};
+
+extern int ceph_osdc_init(struct ceph_osd_client *osdc,
+ struct ceph_client *client);
+extern void ceph_osdc_stop(struct ceph_osd_client *osdc);
+
+extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc,
+ struct ceph_msg *msg);
+extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc,
+ struct ceph_msg *msg);
+
+extern void ceph_calc_raw_layout(struct ceph_osd_client *osdc,
+ struct ceph_file_layout *layout,
+ u64 snapid,
+ u64 off, u64 *plen, u64 *bno,
+ struct ceph_osd_request *req,
+ struct ceph_osd_req_op *op);
+
+extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
+ int flags,
+ struct ceph_snap_context *snapc,
+ struct ceph_osd_req_op *ops,
+ bool use_mempool,
+ gfp_t gfp_flags,
+ struct page **pages,
+ struct bio *bio);
+
+extern void ceph_osdc_build_request(struct ceph_osd_request *req,
+ u64 off, u64 *plen,
+ struct ceph_osd_req_op *src_ops,
+ struct ceph_snap_context *snapc,
+ struct timespec *mtime,
+ const char *oid,
+ int oid_len);
+
+extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *,
+ struct ceph_file_layout *layout,
+ struct ceph_vino vino,
+ u64 offset, u64 *len, int op, int flags,
+ struct ceph_snap_context *snapc,
+ int do_sync, u32 truncate_seq,
+ u64 truncate_size,
+ struct timespec *mtime,
+ bool use_mempool, int num_reply);
+
+static inline void ceph_osdc_get_request(struct ceph_osd_request *req)
+{
+ kref_get(&req->r_kref);
+}
+extern void ceph_osdc_release_request(struct kref *kref);
+static inline void ceph_osdc_put_request(struct ceph_osd_request *req)
+{
+ kref_put(&req->r_kref, ceph_osdc_release_request);
+}
+
+extern int ceph_osdc_start_request(struct ceph_osd_client *osdc,
+ struct ceph_osd_request *req,
+ bool nofail);
+extern int ceph_osdc_wait_request(struct ceph_osd_client *osdc,
+ struct ceph_osd_request *req);
+extern void ceph_osdc_sync(struct ceph_osd_client *osdc);
+
+extern int ceph_osdc_readpages(struct ceph_osd_client *osdc,
+ struct ceph_vino vino,
+ struct ceph_file_layout *layout,
+ u64 off, u64 *plen,
+ u32 truncate_seq, u64 truncate_size,
+ struct page **pages, int nr_pages);
+
+extern int ceph_osdc_writepages(struct ceph_osd_client *osdc,
+ struct ceph_vino vino,
+ struct ceph_file_layout *layout,
+ struct ceph_snap_context *sc,
+ u64 off, u64 len,
+ u32 truncate_seq, u64 truncate_size,
+ struct timespec *mtime,
+ struct page **pages, int nr_pages,
+ int flags, int do_sync, bool nofail);
+
+#endif
+
diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h
new file mode 100644
index 000000000000..ba4c205cbb01
--- /dev/null
+++ b/include/linux/ceph/osdmap.h
@@ -0,0 +1,130 @@
+#ifndef _FS_CEPH_OSDMAP_H
+#define _FS_CEPH_OSDMAP_H
+
+#include <linux/rbtree.h>
+#include "types.h"
+#include "ceph_fs.h"
+#include <linux/crush/crush.h>
+
+/*
+ * The osd map describes the current membership of the osd cluster and
+ * specifies the mapping of objects to placement groups and placement
+ * groups to (sets of) osds. That is, it completely specifies the
+ * (desired) distribution of all data objects in the system at some
+ * point in time.
+ *
+ * Each map version is identified by an epoch, which increases monotonically.
+ *
+ * The map can be updated either via an incremental map (diff) describing
+ * the change between two successive epochs, or as a fully encoded map.
+ */
+struct ceph_pg_pool_info {
+ struct rb_node node;
+ int id;
+ struct ceph_pg_pool v;
+ int pg_num_mask, pgp_num_mask, lpg_num_mask, lpgp_num_mask;
+ char *name;
+};
+
+struct ceph_pg_mapping {
+ struct rb_node node;
+ struct ceph_pg pgid;
+ int len;
+ int osds[];
+};
+
+struct ceph_osdmap {
+ struct ceph_fsid fsid;
+ u32 epoch;
+ u32 mkfs_epoch;
+ struct ceph_timespec created, modified;
+
+ u32 flags; /* CEPH_OSDMAP_* */
+
+ u32 max_osd; /* size of osd_state, _offload, _addr arrays */
+ u8 *osd_state; /* CEPH_OSD_* */
+ u32 *osd_weight; /* 0 = failed, 0x10000 = 100% normal */
+ struct ceph_entity_addr *osd_addr;
+
+ struct rb_root pg_temp;
+ struct rb_root pg_pools;
+ u32 pool_max;
+
+ /* the CRUSH map specifies the mapping of placement groups to
+ * the list of osds that store+replicate them. */
+ struct crush_map *crush;
+};
+
+/*
+ * file layout helpers
+ */
+#define ceph_file_layout_su(l) ((__s32)le32_to_cpu((l).fl_stripe_unit))
+#define ceph_file_layout_stripe_count(l) \
+ ((__s32)le32_to_cpu((l).fl_stripe_count))
+#define ceph_file_layout_object_size(l) ((__s32)le32_to_cpu((l).fl_object_size))
+#define ceph_file_layout_cas_hash(l) ((__s32)le32_to_cpu((l).fl_cas_hash))
+#define ceph_file_layout_object_su(l) \
+ ((__s32)le32_to_cpu((l).fl_object_stripe_unit))
+#define ceph_file_layout_pg_preferred(l) \
+ ((__s32)le32_to_cpu((l).fl_pg_preferred))
+#define ceph_file_layout_pg_pool(l) \
+ ((__s32)le32_to_cpu((l).fl_pg_pool))
+
+static inline unsigned ceph_file_layout_stripe_width(struct ceph_file_layout *l)
+{
+ return le32_to_cpu(l->fl_stripe_unit) *
+ le32_to_cpu(l->fl_stripe_count);
+}
+
+/* "period" == bytes before i start on a new set of objects */
+static inline unsigned ceph_file_layout_period(struct ceph_file_layout *l)
+{
+ return le32_to_cpu(l->fl_object_size) *
+ le32_to_cpu(l->fl_stripe_count);
+}
+
+
+static inline int ceph_osd_is_up(struct ceph_osdmap *map, int osd)
+{
+ return (osd < map->max_osd) && (map->osd_state[osd] & CEPH_OSD_UP);
+}
+
+static inline bool ceph_osdmap_flag(struct ceph_osdmap *map, int flag)
+{
+ return map && (map->flags & flag);
+}
+
+extern char *ceph_osdmap_state_str(char *str, int len, int state);
+
+static inline struct ceph_entity_addr *ceph_osd_addr(struct ceph_osdmap *map,
+ int osd)
+{
+ if (osd >= map->max_osd)
+ return NULL;
+ return &map->osd_addr[osd];
+}
+
+extern struct ceph_osdmap *osdmap_decode(void **p, void *end);
+extern struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
+ struct ceph_osdmap *map,
+ struct ceph_messenger *msgr);
+extern void ceph_osdmap_destroy(struct ceph_osdmap *map);
+
+/* calculate mapping of a file extent to an object */
+extern void ceph_calc_file_object_mapping(struct ceph_file_layout *layout,
+ u64 off, u64 *plen,
+ u64 *bno, u64 *oxoff, u64 *oxlen);
+
+/* calculate mapping of object to a placement group */
+extern int ceph_calc_object_layout(struct ceph_object_layout *ol,
+ const char *oid,
+ struct ceph_file_layout *fl,
+ struct ceph_osdmap *osdmap);
+extern int ceph_calc_pg_acting(struct ceph_osdmap *osdmap, struct ceph_pg pgid,
+ int *acting);
+extern int ceph_calc_pg_primary(struct ceph_osdmap *osdmap,
+ struct ceph_pg pgid);
+
+extern int ceph_pg_poolid_by_name(struct ceph_osdmap *map, const char *name);
+
+#endif
diff --git a/include/linux/ceph/pagelist.h b/include/linux/ceph/pagelist.h
new file mode 100644
index 000000000000..9660d6b0a35d
--- /dev/null
+++ b/include/linux/ceph/pagelist.h
@@ -0,0 +1,75 @@
+#ifndef __FS_CEPH_PAGELIST_H
+#define __FS_CEPH_PAGELIST_H
+
+#include <linux/list.h>
+
+struct ceph_pagelist {
+ struct list_head head;
+ void *mapped_tail;
+ size_t length;
+ size_t room;
+ struct list_head free_list;
+ size_t num_pages_free;
+};
+
+struct ceph_pagelist_cursor {
+ struct ceph_pagelist *pl; /* pagelist, for error checking */
+ struct list_head *page_lru; /* page in list */
+ size_t room; /* room remaining to reset to */
+};
+
+static inline void ceph_pagelist_init(struct ceph_pagelist *pl)
+{
+ INIT_LIST_HEAD(&pl->head);
+ pl->mapped_tail = NULL;
+ pl->length = 0;
+ pl->room = 0;
+ INIT_LIST_HEAD(&pl->free_list);
+ pl->num_pages_free = 0;
+}
+
+extern int ceph_pagelist_release(struct ceph_pagelist *pl);
+
+extern int ceph_pagelist_append(struct ceph_pagelist *pl, const void *d, size_t l);
+
+extern int ceph_pagelist_reserve(struct ceph_pagelist *pl, size_t space);
+
+extern int ceph_pagelist_free_reserve(struct ceph_pagelist *pl);
+
+extern void ceph_pagelist_set_cursor(struct ceph_pagelist *pl,
+ struct ceph_pagelist_cursor *c);
+
+extern int ceph_pagelist_truncate(struct ceph_pagelist *pl,
+ struct ceph_pagelist_cursor *c);
+
+static inline int ceph_pagelist_encode_64(struct ceph_pagelist *pl, u64 v)
+{
+ __le64 ev = cpu_to_le64(v);
+ return ceph_pagelist_append(pl, &ev, sizeof(ev));
+}
+static inline int ceph_pagelist_encode_32(struct ceph_pagelist *pl, u32 v)
+{
+ __le32 ev = cpu_to_le32(v);
+ return ceph_pagelist_append(pl, &ev, sizeof(ev));
+}
+static inline int ceph_pagelist_encode_16(struct ceph_pagelist *pl, u16 v)
+{
+ __le16 ev = cpu_to_le16(v);
+ return ceph_pagelist_append(pl, &ev, sizeof(ev));
+}
+static inline int ceph_pagelist_encode_8(struct ceph_pagelist *pl, u8 v)
+{
+ return ceph_pagelist_append(pl, &v, 1);
+}
+static inline int ceph_pagelist_encode_string(struct ceph_pagelist *pl,
+ char *s, size_t len)
+{
+ int ret = ceph_pagelist_encode_32(pl, len);
+ if (ret)
+ return ret;
+ if (len)
+ return ceph_pagelist_append(pl, s, len);
+ return 0;
+}
+
+#endif
diff --git a/include/linux/ceph/rados.h b/include/linux/ceph/rados.h
new file mode 100644
index 000000000000..6d5247f2e81b
--- /dev/null
+++ b/include/linux/ceph/rados.h
@@ -0,0 +1,405 @@
+#ifndef CEPH_RADOS_H
+#define CEPH_RADOS_H
+
+/*
+ * Data types for the Ceph distributed object storage layer RADOS
+ * (Reliable Autonomic Distributed Object Store).
+ */
+
+#include "msgr.h"
+
+/*
+ * osdmap encoding versions
+ */
+#define CEPH_OSDMAP_INC_VERSION 5
+#define CEPH_OSDMAP_INC_VERSION_EXT 5
+#define CEPH_OSDMAP_VERSION 5
+#define CEPH_OSDMAP_VERSION_EXT 5
+
+/*
+ * fs id
+ */
+struct ceph_fsid {
+ unsigned char fsid[16];
+};
+
+static inline int ceph_fsid_compare(const struct ceph_fsid *a,
+ const struct ceph_fsid *b)
+{
+ return memcmp(a, b, sizeof(*a));
+}
+
+/*
+ * ino, object, etc.
+ */
+typedef __le64 ceph_snapid_t;
+#define CEPH_SNAPDIR ((__u64)(-1)) /* reserved for hidden .snap dir */
+#define CEPH_NOSNAP ((__u64)(-2)) /* "head", "live" revision */
+#define CEPH_MAXSNAP ((__u64)(-3)) /* largest valid snapid */
+
+struct ceph_timespec {
+ __le32 tv_sec;
+ __le32 tv_nsec;
+} __attribute__ ((packed));
+
+
+/*
+ * object layout - how objects are mapped into PGs
+ */
+#define CEPH_OBJECT_LAYOUT_HASH 1
+#define CEPH_OBJECT_LAYOUT_LINEAR 2
+#define CEPH_OBJECT_LAYOUT_HASHINO 3
+
+/*
+ * pg layout -- how PGs are mapped onto (sets of) OSDs
+ */
+#define CEPH_PG_LAYOUT_CRUSH 0
+#define CEPH_PG_LAYOUT_HASH 1
+#define CEPH_PG_LAYOUT_LINEAR 2
+#define CEPH_PG_LAYOUT_HYBRID 3
+
+#define CEPH_PG_MAX_SIZE 16 /* max # osds in a single pg */
+
+/*
+ * placement group.
+ * we encode this into one __le64.
+ */
+struct ceph_pg {
+ __le16 preferred; /* preferred primary osd */
+ __le16 ps; /* placement seed */
+ __le32 pool; /* object pool */
+} __attribute__ ((packed));
+
+/*
+ * pg_pool is a set of pgs storing a pool of objects
+ *
+ * pg_num -- base number of pseudorandomly placed pgs
+ *
+ * pgp_num -- effective number when calculating pg placement. this
+ * is used for pg_num increases. new pgs result in data being "split"
+ * into new pgs. for this to proceed smoothly, new pgs are intiially
+ * colocated with their parents; that is, pgp_num doesn't increase
+ * until the new pgs have successfully split. only _then_ are the new
+ * pgs placed independently.
+ *
+ * lpg_num -- localized pg count (per device). replicas are randomly
+ * selected.
+ *
+ * lpgp_num -- as above.
+ */
+#define CEPH_PG_TYPE_REP 1
+#define CEPH_PG_TYPE_RAID4 2
+#define CEPH_PG_POOL_VERSION 2
+struct ceph_pg_pool {
+ __u8 type; /* CEPH_PG_TYPE_* */
+ __u8 size; /* number of osds in each pg */
+ __u8 crush_ruleset; /* crush placement rule */
+ __u8 object_hash; /* hash mapping object name to ps */
+ __le32 pg_num, pgp_num; /* number of pg's */
+ __le32 lpg_num, lpgp_num; /* number of localized pg's */
+ __le32 last_change; /* most recent epoch changed */
+ __le64 snap_seq; /* seq for per-pool snapshot */
+ __le32 snap_epoch; /* epoch of last snap */
+ __le32 num_snaps;
+ __le32 num_removed_snap_intervals; /* if non-empty, NO per-pool snaps */
+ __le64 auid; /* who owns the pg */
+} __attribute__ ((packed));
+
+/*
+ * stable_mod func is used to control number of placement groups.
+ * similar to straight-up modulo, but produces a stable mapping as b
+ * increases over time. b is the number of bins, and bmask is the
+ * containing power of 2 minus 1.
+ *
+ * b <= bmask and bmask=(2**n)-1
+ * e.g., b=12 -> bmask=15, b=123 -> bmask=127
+ */
+static inline int ceph_stable_mod(int x, int b, int bmask)
+{
+ if ((x & bmask) < b)
+ return x & bmask;
+ else
+ return x & (bmask >> 1);
+}
+
+/*
+ * object layout - how a given object should be stored.
+ */
+struct ceph_object_layout {
+ struct ceph_pg ol_pgid; /* raw pg, with _full_ ps precision. */
+ __le32 ol_stripe_unit; /* for per-object parity, if any */
+} __attribute__ ((packed));
+
+/*
+ * compound epoch+version, used by storage layer to serialize mutations
+ */
+struct ceph_eversion {
+ __le32 epoch;
+ __le64 version;
+} __attribute__ ((packed));
+
+/*
+ * osd map bits
+ */
+
+/* status bits */
+#define CEPH_OSD_EXISTS 1
+#define CEPH_OSD_UP 2
+
+/* osd weights. fixed point value: 0x10000 == 1.0 ("in"), 0 == "out" */
+#define CEPH_OSD_IN 0x10000
+#define CEPH_OSD_OUT 0
+
+
+/*
+ * osd map flag bits
+ */
+#define CEPH_OSDMAP_NEARFULL (1<<0) /* sync writes (near ENOSPC) */
+#define CEPH_OSDMAP_FULL (1<<1) /* no data writes (ENOSPC) */
+#define CEPH_OSDMAP_PAUSERD (1<<2) /* pause all reads */
+#define CEPH_OSDMAP_PAUSEWR (1<<3) /* pause all writes */
+#define CEPH_OSDMAP_PAUSEREC (1<<4) /* pause recovery */
+
+/*
+ * osd ops
+ */
+#define CEPH_OSD_OP_MODE 0xf000
+#define CEPH_OSD_OP_MODE_RD 0x1000
+#define CEPH_OSD_OP_MODE_WR 0x2000
+#define CEPH_OSD_OP_MODE_RMW 0x3000
+#define CEPH_OSD_OP_MODE_SUB 0x4000
+
+#define CEPH_OSD_OP_TYPE 0x0f00
+#define CEPH_OSD_OP_TYPE_LOCK 0x0100
+#define CEPH_OSD_OP_TYPE_DATA 0x0200
+#define CEPH_OSD_OP_TYPE_ATTR 0x0300
+#define CEPH_OSD_OP_TYPE_EXEC 0x0400
+#define CEPH_OSD_OP_TYPE_PG 0x0500
+
+enum {
+ /** data **/
+ /* read */
+ CEPH_OSD_OP_READ = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 1,
+ CEPH_OSD_OP_STAT = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 2,
+
+ /* fancy read */
+ CEPH_OSD_OP_MASKTRUNC = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 4,
+
+ /* write */
+ CEPH_OSD_OP_WRITE = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 1,
+ CEPH_OSD_OP_WRITEFULL = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 2,
+ CEPH_OSD_OP_TRUNCATE = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 3,
+ CEPH_OSD_OP_ZERO = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 4,
+ CEPH_OSD_OP_DELETE = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 5,
+
+ /* fancy write */
+ CEPH_OSD_OP_APPEND = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 6,
+ CEPH_OSD_OP_STARTSYNC = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 7,
+ CEPH_OSD_OP_SETTRUNC = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 8,
+ CEPH_OSD_OP_TRIMTRUNC = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 9,
+
+ CEPH_OSD_OP_TMAPUP = CEPH_OSD_OP_MODE_RMW | CEPH_OSD_OP_TYPE_DATA | 10,
+ CEPH_OSD_OP_TMAPPUT = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 11,
+ CEPH_OSD_OP_TMAPGET = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 12,
+
+ CEPH_OSD_OP_CREATE = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 13,
+ CEPH_OSD_OP_ROLLBACK= CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 14,
+
+ /** attrs **/
+ /* read */
+ CEPH_OSD_OP_GETXATTR = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_ATTR | 1,
+ CEPH_OSD_OP_GETXATTRS = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_ATTR | 2,
+ CEPH_OSD_OP_CMPXATTR = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_ATTR | 3,
+
+ /* write */
+ CEPH_OSD_OP_SETXATTR = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_ATTR | 1,
+ CEPH_OSD_OP_SETXATTRS = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_ATTR | 2,
+ CEPH_OSD_OP_RESETXATTRS = CEPH_OSD_OP_MODE_WR|CEPH_OSD_OP_TYPE_ATTR | 3,
+ CEPH_OSD_OP_RMXATTR = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_ATTR | 4,
+
+ /** subop **/
+ CEPH_OSD_OP_PULL = CEPH_OSD_OP_MODE_SUB | 1,
+ CEPH_OSD_OP_PUSH = CEPH_OSD_OP_MODE_SUB | 2,
+ CEPH_OSD_OP_BALANCEREADS = CEPH_OSD_OP_MODE_SUB | 3,
+ CEPH_OSD_OP_UNBALANCEREADS = CEPH_OSD_OP_MODE_SUB | 4,
+ CEPH_OSD_OP_SCRUB = CEPH_OSD_OP_MODE_SUB | 5,
+
+ /** lock **/
+ CEPH_OSD_OP_WRLOCK = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 1,
+ CEPH_OSD_OP_WRUNLOCK = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 2,
+ CEPH_OSD_OP_RDLOCK = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 3,
+ CEPH_OSD_OP_RDUNLOCK = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 4,
+ CEPH_OSD_OP_UPLOCK = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 5,
+ CEPH_OSD_OP_DNLOCK = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 6,
+
+ /** exec **/
+ CEPH_OSD_OP_CALL = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_EXEC | 1,
+
+ /** pg **/
+ CEPH_OSD_OP_PGLS = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_PG | 1,
+};
+
+static inline int ceph_osd_op_type_lock(int op)
+{
+ return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_LOCK;
+}
+static inline int ceph_osd_op_type_data(int op)
+{
+ return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_DATA;
+}
+static inline int ceph_osd_op_type_attr(int op)
+{
+ return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_ATTR;
+}
+static inline int ceph_osd_op_type_exec(int op)
+{
+ return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_EXEC;
+}
+static inline int ceph_osd_op_type_pg(int op)
+{
+ return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_PG;
+}
+
+static inline int ceph_osd_op_mode_subop(int op)
+{
+ return (op & CEPH_OSD_OP_MODE) == CEPH_OSD_OP_MODE_SUB;
+}
+static inline int ceph_osd_op_mode_read(int op)
+{
+ return (op & CEPH_OSD_OP_MODE) == CEPH_OSD_OP_MODE_RD;
+}
+static inline int ceph_osd_op_mode_modify(int op)
+{
+ return (op & CEPH_OSD_OP_MODE) == CEPH_OSD_OP_MODE_WR;
+}
+
+/*
+ * note that the following tmap stuff is also defined in the ceph librados.h
+ * any modification here needs to be updated there
+ */
+#define CEPH_OSD_TMAP_HDR 'h'
+#define CEPH_OSD_TMAP_SET 's'
+#define CEPH_OSD_TMAP_RM 'r'
+
+extern const char *ceph_osd_op_name(int op);
+
+
+/*
+ * osd op flags
+ *
+ * An op may be READ, WRITE, or READ|WRITE.
+ */
+enum {
+ CEPH_OSD_FLAG_ACK = 1, /* want (or is) "ack" ack */
+ CEPH_OSD_FLAG_ONNVRAM = 2, /* want (or is) "onnvram" ack */
+ CEPH_OSD_FLAG_ONDISK = 4, /* want (or is) "ondisk" ack */
+ CEPH_OSD_FLAG_RETRY = 8, /* resend attempt */
+ CEPH_OSD_FLAG_READ = 16, /* op may read */
+ CEPH_OSD_FLAG_WRITE = 32, /* op may write */
+ CEPH_OSD_FLAG_ORDERSNAP = 64, /* EOLDSNAP if snapc is out of order */
+ CEPH_OSD_FLAG_PEERSTAT = 128, /* msg includes osd_peer_stat */
+ CEPH_OSD_FLAG_BALANCE_READS = 256,
+ CEPH_OSD_FLAG_PARALLELEXEC = 512, /* execute op in parallel */
+ CEPH_OSD_FLAG_PGOP = 1024, /* pg op, no object */
+ CEPH_OSD_FLAG_EXEC = 2048, /* op may exec */
+ CEPH_OSD_FLAG_EXEC_PUBLIC = 4096, /* op may exec (public) */
+};
+
+enum {
+ CEPH_OSD_OP_FLAG_EXCL = 1, /* EXCL object create */
+};
+
+#define EOLDSNAPC ERESTART /* ORDERSNAP flag set; writer has old snapc*/
+#define EBLACKLISTED ESHUTDOWN /* blacklisted */
+
+/* xattr comparison */
+enum {
+ CEPH_OSD_CMPXATTR_OP_NOP = 0,
+ CEPH_OSD_CMPXATTR_OP_EQ = 1,
+ CEPH_OSD_CMPXATTR_OP_NE = 2,
+ CEPH_OSD_CMPXATTR_OP_GT = 3,
+ CEPH_OSD_CMPXATTR_OP_GTE = 4,
+ CEPH_OSD_CMPXATTR_OP_LT = 5,
+ CEPH_OSD_CMPXATTR_OP_LTE = 6
+};
+
+enum {
+ CEPH_OSD_CMPXATTR_MODE_STRING = 1,
+ CEPH_OSD_CMPXATTR_MODE_U64 = 2
+};
+
+/*
+ * an individual object operation. each may be accompanied by some data
+ * payload
+ */
+struct ceph_osd_op {
+ __le16 op; /* CEPH_OSD_OP_* */
+ __le32 flags; /* CEPH_OSD_FLAG_* */
+ union {
+ struct {
+ __le64 offset, length;
+ __le64 truncate_size;
+ __le32 truncate_seq;
+ } __attribute__ ((packed)) extent;
+ struct {
+ __le32 name_len;
+ __le32 value_len;
+ __u8 cmp_op; /* CEPH_OSD_CMPXATTR_OP_* */
+ __u8 cmp_mode; /* CEPH_OSD_CMPXATTR_MODE_* */
+ } __attribute__ ((packed)) xattr;
+ struct {
+ __u8 class_len;
+ __u8 method_len;
+ __u8 argc;
+ __le32 indata_len;
+ } __attribute__ ((packed)) cls;
+ struct {
+ __le64 cookie, count;
+ } __attribute__ ((packed)) pgls;
+ struct {
+ __le64 snapid;
+ } __attribute__ ((packed)) snap;
+ };
+ __le32 payload_len;
+} __attribute__ ((packed));
+
+/*
+ * osd request message header. each request may include multiple
+ * ceph_osd_op object operations.
+ */
+struct ceph_osd_request_head {
+ __le32 client_inc; /* client incarnation */
+ struct ceph_object_layout layout; /* pgid */
+ __le32 osdmap_epoch; /* client's osdmap epoch */
+
+ __le32 flags;
+
+ struct ceph_timespec mtime; /* for mutations only */
+ struct ceph_eversion reassert_version; /* if we are replaying op */
+
+ __le32 object_len; /* length of object name */
+
+ __le64 snapid; /* snapid to read */
+ __le64 snap_seq; /* writer's snap context */
+ __le32 num_snaps;
+
+ __le16 num_ops;
+ struct ceph_osd_op ops[]; /* followed by ops[], obj, ticket, snaps */
+} __attribute__ ((packed));
+
+struct ceph_osd_reply_head {
+ __le32 client_inc; /* client incarnation */
+ __le32 flags;
+ struct ceph_object_layout layout;
+ __le32 osdmap_epoch;
+ struct ceph_eversion reassert_version; /* for replaying uncommitted */
+
+ __le32 result; /* result code */
+
+ __le32 object_len; /* length of object name */
+ __le32 num_ops;
+ struct ceph_osd_op ops[0]; /* ops[], object */
+} __attribute__ ((packed));
+
+
+#endif
diff --git a/include/linux/ceph/types.h b/include/linux/ceph/types.h
new file mode 100644
index 000000000000..28b35a005ec2
--- /dev/null
+++ b/include/linux/ceph/types.h
@@ -0,0 +1,29 @@
+#ifndef _FS_CEPH_TYPES_H
+#define _FS_CEPH_TYPES_H
+
+/* needed before including ceph_fs.h */
+#include <linux/in.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/string.h>
+
+#include "ceph_fs.h"
+#include "ceph_frag.h"
+#include "ceph_hash.h"
+
+/*
+ * Identify inodes by both their ino AND snapshot id (a u64).
+ */
+struct ceph_vino {
+ u64 ino;
+ u64 snap;
+};
+
+
+/* context for the caps reservation mechanism */
+struct ceph_cap_reservation {
+ int count;
+};
+
+
+#endif
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 0c991023ee47..709dfb901d11 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -75,7 +75,7 @@ struct cgroup_subsys_state {
unsigned long flags;
/* ID for this css, if possible */
- struct css_id *id;
+ struct css_id __rcu *id;
};
/* bits in struct cgroup_subsys_state flags field */
@@ -205,7 +205,7 @@ struct cgroup {
struct list_head children; /* my children */
struct cgroup *parent; /* my parent */
- struct dentry *dentry; /* cgroup fs entry, RCU protected */
+ struct dentry __rcu *dentry; /* cgroup fs entry, RCU protected */
/* Private pointers for each registered subsystem */
struct cgroup_subsys_state *subsys[CGROUP_SUBSYS_COUNT];
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index c1a62c56a660..320d6c94ff84 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -16,7 +16,11 @@
# define __release(x) __context__(x,-1)
# define __cond_lock(x,c) ((c) ? ({ __acquire(x); 1; }) : 0)
# define __percpu __attribute__((noderef, address_space(3)))
+#ifdef CONFIG_SPARSE_RCU_POINTER
+# define __rcu __attribute__((noderef, address_space(4)))
+#else
# define __rcu
+#endif
extern void __chk_user_ptr(const volatile void __user *);
extern void __chk_io_ptr(const volatile void __iomem *);
#else
diff --git a/include/linux/coredump.h b/include/linux/coredump.h
index 8ba66a9d9022..ba4b85a6d9b8 100644
--- a/include/linux/coredump.h
+++ b/include/linux/coredump.h
@@ -9,37 +9,7 @@
* These are the only things you should do on a core-file: use only these
* functions to write out all the necessary info.
*/
-static inline int dump_write(struct file *file, const void *addr, int nr)
-{
- return file->f_op->write(file, addr, nr, &file->f_pos) == nr;
-}
-
-static inline int dump_seek(struct file *file, loff_t off)
-{
- int ret = 1;
-
- if (file->f_op->llseek && file->f_op->llseek != no_llseek) {
- if (file->f_op->llseek(file, off, SEEK_CUR) < 0)
- return 0;
- } else {
- char *buf = (char *)get_zeroed_page(GFP_KERNEL);
-
- if (!buf)
- return 0;
- while (off > 0) {
- unsigned long n = off;
-
- if (n > PAGE_SIZE)
- n = PAGE_SIZE;
- if (!dump_write(file, buf, n)) {
- ret = 0;
- break;
- }
- off -= n;
- }
- free_page((unsigned long)buf);
- }
- return ret;
-}
+extern int dump_write(struct file *file, const void *addr, int nr);
+extern int dump_seek(struct file *file, loff_t off);
#endif /* _LINUX_COREDUMP_H */
diff --git a/include/linux/cred.h b/include/linux/cred.h
index 4d2c39573f36..4aaeab376446 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -84,7 +84,7 @@ struct thread_group_cred {
atomic_t usage;
pid_t tgid; /* thread group process ID */
spinlock_t lock;
- struct key *session_keyring; /* keyring inherited over fork */
+ struct key __rcu *session_keyring; /* keyring inherited over fork */
struct key *process_keyring; /* keyring private to this process */
struct rcu_head rcu; /* RCU deletion hook */
};
diff --git a/include/linux/crush/crush.h b/include/linux/crush/crush.h
new file mode 100644
index 000000000000..97e435b191f4
--- /dev/null
+++ b/include/linux/crush/crush.h
@@ -0,0 +1,180 @@
+#ifndef CEPH_CRUSH_CRUSH_H
+#define CEPH_CRUSH_CRUSH_H
+
+#include <linux/types.h>
+
+/*
+ * CRUSH is a pseudo-random data distribution algorithm that
+ * efficiently distributes input values (typically, data objects)
+ * across a heterogeneous, structured storage cluster.
+ *
+ * The algorithm was originally described in detail in this paper
+ * (although the algorithm has evolved somewhat since then):
+ *
+ * http://www.ssrc.ucsc.edu/Papers/weil-sc06.pdf
+ *
+ * LGPL2
+ */
+
+
+#define CRUSH_MAGIC 0x00010000ul /* for detecting algorithm revisions */
+
+
+#define CRUSH_MAX_DEPTH 10 /* max crush hierarchy depth */
+#define CRUSH_MAX_SET 10 /* max size of a mapping result */
+
+
+/*
+ * CRUSH uses user-defined "rules" to describe how inputs should be
+ * mapped to devices. A rule consists of sequence of steps to perform
+ * to generate the set of output devices.
+ */
+struct crush_rule_step {
+ __u32 op;
+ __s32 arg1;
+ __s32 arg2;
+};
+
+/* step op codes */
+enum {
+ CRUSH_RULE_NOOP = 0,
+ CRUSH_RULE_TAKE = 1, /* arg1 = value to start with */
+ CRUSH_RULE_CHOOSE_FIRSTN = 2, /* arg1 = num items to pick */
+ /* arg2 = type */
+ CRUSH_RULE_CHOOSE_INDEP = 3, /* same */
+ CRUSH_RULE_EMIT = 4, /* no args */
+ CRUSH_RULE_CHOOSE_LEAF_FIRSTN = 6,
+ CRUSH_RULE_CHOOSE_LEAF_INDEP = 7,
+};
+
+/*
+ * for specifying choose num (arg1) relative to the max parameter
+ * passed to do_rule
+ */
+#define CRUSH_CHOOSE_N 0
+#define CRUSH_CHOOSE_N_MINUS(x) (-(x))
+
+/*
+ * The rule mask is used to describe what the rule is intended for.
+ * Given a ruleset and size of output set, we search through the
+ * rule list for a matching rule_mask.
+ */
+struct crush_rule_mask {
+ __u8 ruleset;
+ __u8 type;
+ __u8 min_size;
+ __u8 max_size;
+};
+
+struct crush_rule {
+ __u32 len;
+ struct crush_rule_mask mask;
+ struct crush_rule_step steps[0];
+};
+
+#define crush_rule_size(len) (sizeof(struct crush_rule) + \
+ (len)*sizeof(struct crush_rule_step))
+
+
+
+/*
+ * A bucket is a named container of other items (either devices or
+ * other buckets). Items within a bucket are chosen using one of a
+ * few different algorithms. The table summarizes how the speed of
+ * each option measures up against mapping stability when items are
+ * added or removed.
+ *
+ * Bucket Alg Speed Additions Removals
+ * ------------------------------------------------
+ * uniform O(1) poor poor
+ * list O(n) optimal poor
+ * tree O(log n) good good
+ * straw O(n) optimal optimal
+ */
+enum {
+ CRUSH_BUCKET_UNIFORM = 1,
+ CRUSH_BUCKET_LIST = 2,
+ CRUSH_BUCKET_TREE = 3,
+ CRUSH_BUCKET_STRAW = 4
+};
+extern const char *crush_bucket_alg_name(int alg);
+
+struct crush_bucket {
+ __s32 id; /* this'll be negative */
+ __u16 type; /* non-zero; type=0 is reserved for devices */
+ __u8 alg; /* one of CRUSH_BUCKET_* */
+ __u8 hash; /* which hash function to use, CRUSH_HASH_* */
+ __u32 weight; /* 16-bit fixed point */
+ __u32 size; /* num items */
+ __s32 *items;
+
+ /*
+ * cached random permutation: used for uniform bucket and for
+ * the linear search fallback for the other bucket types.
+ */
+ __u32 perm_x; /* @x for which *perm is defined */
+ __u32 perm_n; /* num elements of *perm that are permuted/defined */
+ __u32 *perm;
+};
+
+struct crush_bucket_uniform {
+ struct crush_bucket h;
+ __u32 item_weight; /* 16-bit fixed point; all items equally weighted */
+};
+
+struct crush_bucket_list {
+ struct crush_bucket h;
+ __u32 *item_weights; /* 16-bit fixed point */
+ __u32 *sum_weights; /* 16-bit fixed point. element i is sum
+ of weights 0..i, inclusive */
+};
+
+struct crush_bucket_tree {
+ struct crush_bucket h; /* note: h.size is _tree_ size, not number of
+ actual items */
+ __u8 num_nodes;
+ __u32 *node_weights;
+};
+
+struct crush_bucket_straw {
+ struct crush_bucket h;
+ __u32 *item_weights; /* 16-bit fixed point */
+ __u32 *straws; /* 16-bit fixed point */
+};
+
+
+
+/*
+ * CRUSH map includes all buckets, rules, etc.
+ */
+struct crush_map {
+ struct crush_bucket **buckets;
+ struct crush_rule **rules;
+
+ /*
+ * Parent pointers to identify the parent bucket a device or
+ * bucket in the hierarchy. If an item appears more than
+ * once, this is the _last_ time it appeared (where buckets
+ * are processed in bucket id order, from -1 on down to
+ * -max_buckets.
+ */
+ __u32 *bucket_parents;
+ __u32 *device_parents;
+
+ __s32 max_buckets;
+ __u32 max_rules;
+ __s32 max_devices;
+};
+
+
+/* crush.c */
+extern int crush_get_bucket_item_weight(struct crush_bucket *b, int pos);
+extern void crush_calc_parents(struct crush_map *map);
+extern void crush_destroy_bucket_uniform(struct crush_bucket_uniform *b);
+extern void crush_destroy_bucket_list(struct crush_bucket_list *b);
+extern void crush_destroy_bucket_tree(struct crush_bucket_tree *b);
+extern void crush_destroy_bucket_straw(struct crush_bucket_straw *b);
+extern void crush_destroy_bucket(struct crush_bucket *b);
+extern void crush_destroy(struct crush_map *map);
+
+#endif
diff --git a/include/linux/crush/hash.h b/include/linux/crush/hash.h
new file mode 100644
index 000000000000..91e884230d5d
--- /dev/null
+++ b/include/linux/crush/hash.h
@@ -0,0 +1,17 @@
+#ifndef CEPH_CRUSH_HASH_H
+#define CEPH_CRUSH_HASH_H
+
+#define CRUSH_HASH_RJENKINS1 0
+
+#define CRUSH_HASH_DEFAULT CRUSH_HASH_RJENKINS1
+
+extern const char *crush_hash_name(int type);
+
+extern __u32 crush_hash32(int type, __u32 a);
+extern __u32 crush_hash32_2(int type, __u32 a, __u32 b);
+extern __u32 crush_hash32_3(int type, __u32 a, __u32 b, __u32 c);
+extern __u32 crush_hash32_4(int type, __u32 a, __u32 b, __u32 c, __u32 d);
+extern __u32 crush_hash32_5(int type, __u32 a, __u32 b, __u32 c, __u32 d,
+ __u32 e);
+
+#endif
diff --git a/include/linux/crush/mapper.h b/include/linux/crush/mapper.h
new file mode 100644
index 000000000000..c46b99c18bb0
--- /dev/null
+++ b/include/linux/crush/mapper.h
@@ -0,0 +1,20 @@
+#ifndef CEPH_CRUSH_MAPPER_H
+#define CEPH_CRUSH_MAPPER_H
+
+/*
+ * CRUSH functions for find rules and then mapping an input to an
+ * output set.
+ *
+ * LGPL2
+ */
+
+#include "crush.h"
+
+extern int crush_find_rule(struct crush_map *map, int pool, int type, int size);
+extern int crush_do_rule(struct crush_map *map,
+ int ruleno,
+ int x, int *result, int result_max,
+ int forcefeed, /* -1 for none */
+ __u32 *weights);
+
+#endif
diff --git a/include/linux/debug_locks.h b/include/linux/debug_locks.h
index 29b3ce3f2a1d..2833452ea01c 100644
--- a/include/linux/debug_locks.h
+++ b/include/linux/debug_locks.h
@@ -49,7 +49,6 @@ struct task_struct;
#ifdef CONFIG_LOCKDEP
extern void debug_show_all_locks(void);
-extern void __debug_show_held_locks(struct task_struct *task);
extern void debug_show_held_locks(struct task_struct *task);
extern void debug_check_no_locks_freed(const void *from, unsigned long len);
extern void debug_check_no_locks_held(struct task_struct *task);
@@ -58,10 +57,6 @@ static inline void debug_show_all_locks(void)
{
}
-static inline void __debug_show_held_locks(struct task_struct *task)
-{
-}
-
static inline void debug_show_held_locks(struct task_struct *task)
{
}
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index d7cecc90ed34..a7d9dc21391d 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -57,15 +57,15 @@ extern int dmar_table_init(void);
extern int dmar_dev_scope_init(void);
/* Intel IOMMU detection */
-extern void detect_intel_iommu(void);
+extern int detect_intel_iommu(void);
extern int enable_drhd_fault_handling(void);
extern int parse_ioapics_under_ir(void);
extern int alloc_iommu(struct dmar_drhd_unit *);
#else
-static inline void detect_intel_iommu(void)
+static inline int detect_intel_iommu(void)
{
- return;
+ return -ENODEV;
}
static inline int dmar_table_init(void)
@@ -106,6 +106,7 @@ struct irte {
__u64 high;
};
};
+
#ifdef CONFIG_INTR_REMAP
extern int intr_remapping_enabled;
extern int intr_remapping_supported(void);
@@ -119,11 +120,8 @@ extern int alloc_irte(struct intel_iommu *iommu, int irq, u16 count);
extern int set_irte_irq(int irq, struct intel_iommu *iommu, u16 index,
u16 sub_handle);
extern int map_irq_to_irte_handle(int irq, u16 *sub_handle);
-extern int clear_irte_irq(int irq, struct intel_iommu *iommu, u16 index);
-extern int flush_irte(int irq);
extern int free_irte(int irq);
-extern int irq_remapped(int irq);
extern struct intel_iommu *map_dev_to_ir(struct pci_dev *dev);
extern struct intel_iommu *map_ioapic_to_ir(int apic);
extern struct intel_iommu *map_hpet_to_ir(u8 id);
@@ -177,7 +175,6 @@ static inline int set_msi_sid(struct irte *irte, struct pci_dev *dev)
return 0;
}
-#define irq_remapped(irq) (0)
#define enable_intr_remapping(mode) (-1)
#define disable_intr_remapping() (0)
#define reenable_intr_remapping(mode) (0)
@@ -187,8 +184,9 @@ static inline int set_msi_sid(struct irte *irte, struct pci_dev *dev)
/* Can't use the common MSI interrupt functions
* since DMAR is not a pci device
*/
-extern void dmar_msi_unmask(unsigned int irq);
-extern void dmar_msi_mask(unsigned int irq);
+struct irq_data;
+extern void dmar_msi_unmask(struct irq_data *data);
+extern void dmar_msi_mask(struct irq_data *data);
extern void dmar_msi_read(int irq, struct msi_msg *msg);
extern void dmar_msi_write(int irq, struct msi_msg *msg);
extern int dmar_set_interrupt(struct intel_iommu *iommu);
diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h
index 52c0da4bdd18..bef3cda44c4c 100644
--- a/include/linux/dynamic_debug.h
+++ b/include/linux/dynamic_debug.h
@@ -1,6 +1,8 @@
#ifndef _DYNAMIC_DEBUG_H
#define _DYNAMIC_DEBUG_H
+#include <linux/jump_label.h>
+
/* dynamic_printk_enabled, and dynamic_printk_enabled2 are bitmasks in which
* bit n is set to 1 if any modname hashes into the bucket n, 0 otherwise. They
* use independent hash functions, to reduce the chance of false positives.
@@ -22,8 +24,6 @@ struct _ddebug {
const char *function;
const char *filename;
const char *format;
- char primary_hash;
- char secondary_hash;
unsigned int lineno:24;
/*
* The flags field controls the behaviour at the callsite.
@@ -33,6 +33,7 @@ struct _ddebug {
#define _DPRINTK_FLAGS_PRINT (1<<0) /* printk() a message using the format */
#define _DPRINTK_FLAGS_DEFAULT 0
unsigned int flags:8;
+ char enabled;
} __attribute__((aligned(8)));
@@ -42,33 +43,35 @@ int ddebug_add_module(struct _ddebug *tab, unsigned int n,
#if defined(CONFIG_DYNAMIC_DEBUG)
extern int ddebug_remove_module(const char *mod_name);
-#define __dynamic_dbg_enabled(dd) ({ \
- int __ret = 0; \
- if (unlikely((dynamic_debug_enabled & (1LL << DEBUG_HASH)) && \
- (dynamic_debug_enabled2 & (1LL << DEBUG_HASH2)))) \
- if (unlikely(dd.flags)) \
- __ret = 1; \
- __ret; })
-
#define dynamic_pr_debug(fmt, ...) do { \
+ __label__ do_printk; \
+ __label__ out; \
static struct _ddebug descriptor \
__used \
__attribute__((section("__verbose"), aligned(8))) = \
- { KBUILD_MODNAME, __func__, __FILE__, fmt, DEBUG_HASH, \
- DEBUG_HASH2, __LINE__, _DPRINTK_FLAGS_DEFAULT }; \
- if (__dynamic_dbg_enabled(descriptor)) \
- printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); \
+ { KBUILD_MODNAME, __func__, __FILE__, fmt, __LINE__, \
+ _DPRINTK_FLAGS_DEFAULT }; \
+ JUMP_LABEL(&descriptor.enabled, do_printk); \
+ goto out; \
+do_printk: \
+ printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); \
+out: ; \
} while (0)
#define dynamic_dev_dbg(dev, fmt, ...) do { \
+ __label__ do_printk; \
+ __label__ out; \
static struct _ddebug descriptor \
__used \
__attribute__((section("__verbose"), aligned(8))) = \
- { KBUILD_MODNAME, __func__, __FILE__, fmt, DEBUG_HASH, \
- DEBUG_HASH2, __LINE__, _DPRINTK_FLAGS_DEFAULT }; \
- if (__dynamic_dbg_enabled(descriptor)) \
- dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__); \
+ { KBUILD_MODNAME, __func__, __FILE__, fmt, __LINE__, \
+ _DPRINTK_FLAGS_DEFAULT }; \
+ JUMP_LABEL(&descriptor.enabled, do_printk); \
+ goto out; \
+do_printk: \
+ dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__); \
+out: ; \
} while (0)
#else
diff --git a/include/linux/edac.h b/include/linux/edac.h
index 7cf92e8a4196..36c66443bdfd 100644
--- a/include/linux/edac.h
+++ b/include/linux/edac.h
@@ -13,6 +13,7 @@
#define _LINUX_EDAC_H_
#include <asm/atomic.h>
+#include <linux/sysdev.h>
#define EDAC_OPSTATE_INVAL -1
#define EDAC_OPSTATE_POLL 0
@@ -22,9 +23,12 @@
extern int edac_op_state;
extern int edac_err_assert;
extern atomic_t edac_handlers;
+extern struct sysdev_class edac_class;
extern int edac_handler_set(void);
extern void edac_atomic_assert_error(void);
+extern struct sysdev_class *edac_get_sysfs_class(void);
+extern void edac_put_sysfs_class(void);
static inline void opstate_init(void)
{
diff --git a/include/linux/elevator.h b/include/linux/elevator.h
index 926b50322a46..4fd978e7eb83 100644
--- a/include/linux/elevator.h
+++ b/include/linux/elevator.h
@@ -93,6 +93,7 @@ struct elevator_queue
struct elevator_type *elevator_type;
struct mutex sysfs_lock;
struct hlist_head *hash;
+ unsigned int registered:1;
};
/*
diff --git a/include/linux/fdtable.h b/include/linux/fdtable.h
index f59ed297b661..133c0ba25e30 100644
--- a/include/linux/fdtable.h
+++ b/include/linux/fdtable.h
@@ -31,7 +31,7 @@ struct embedded_fd_set {
struct fdtable {
unsigned int max_fds;
- struct file ** fd; /* current fd array */
+ struct file __rcu **fd; /* current fd array */
fd_set *close_on_exec;
fd_set *open_fds;
struct rcu_head rcu;
@@ -46,7 +46,7 @@ struct files_struct {
* read mostly part
*/
atomic_t count;
- struct fdtable *fdt;
+ struct fdtable __rcu *fdt;
struct fdtable fdtab;
/*
* written part on a separate cache line in SMP
@@ -55,7 +55,7 @@ struct files_struct {
int next_fd;
struct embedded_fd_set close_on_exec_init;
struct embedded_fd_set open_fds_init;
- struct file * fd_array[NR_OPEN_DEFAULT];
+ struct file __rcu * fd_array[NR_OPEN_DEFAULT];
};
#define rcu_dereference_check_fdtable(files, fdtfd) \
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 63d069bd80b7..3168dcfb94f2 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1384,7 +1384,7 @@ struct super_block {
* Saved mount options for lazy filesystems using
* generic_show_options()
*/
- char *s_options;
+ char __rcu *s_options;
};
extern struct timespec current_fs_time(struct super_block *sb);
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index 02b8b24f8f51..8beabb958f61 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -191,8 +191,8 @@ struct ftrace_event_call {
unsigned int flags;
#ifdef CONFIG_PERF_EVENTS
- int perf_refcount;
- struct hlist_head *perf_events;
+ int perf_refcount;
+ struct hlist_head __percpu *perf_events;
#endif
};
@@ -252,8 +252,8 @@ DECLARE_PER_CPU(struct pt_regs, perf_trace_regs);
extern int perf_trace_init(struct perf_event *event);
extern void perf_trace_destroy(struct perf_event *event);
-extern int perf_trace_enable(struct perf_event *event);
-extern void perf_trace_disable(struct perf_event *event);
+extern int perf_trace_add(struct perf_event *event, int flags);
+extern void perf_trace_del(struct perf_event *event, int flags);
extern int ftrace_profile_set_filter(struct perf_event *event, int event_id,
char *filter_str);
extern void ftrace_profile_free_filter(struct perf_event *event);
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 5f2f4c4d8fb0..af3f06b41dc1 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -129,8 +129,8 @@ struct blk_scsi_cmd_filter {
struct disk_part_tbl {
struct rcu_head rcu_head;
int len;
- struct hd_struct *last_lookup;
- struct hd_struct *part[];
+ struct hd_struct __rcu *last_lookup;
+ struct hd_struct __rcu *part[];
};
struct gendisk {
@@ -149,7 +149,7 @@ struct gendisk {
* non-critical accesses use RCU. Always access through
* helpers.
*/
- struct disk_part_tbl *part_tbl;
+ struct disk_part_tbl __rcu *part_tbl;
struct hd_struct part0;
const struct block_device_operations *fops;
diff --git a/include/linux/hardirq.h b/include/linux/hardirq.h
index 7dfdc06c7e18..8a389b608ce3 100644
--- a/include/linux/hardirq.h
+++ b/include/linux/hardirq.h
@@ -63,6 +63,8 @@
#define HARDIRQ_OFFSET (1UL << HARDIRQ_SHIFT)
#define NMI_OFFSET (1UL << NMI_SHIFT)
+#define SOFTIRQ_DISABLE_OFFSET (2 * SOFTIRQ_OFFSET)
+
#ifndef PREEMPT_ACTIVE
#define PREEMPT_ACTIVE_BITS 1
#define PREEMPT_ACTIVE_SHIFT (NMI_SHIFT + NMI_BITS)
@@ -81,10 +83,13 @@
/*
* Are we doing bottom half or hardware interrupt processing?
* Are we in a softirq context? Interrupt context?
+ * in_softirq - Are we currently processing softirq or have bh disabled?
+ * in_serving_softirq - Are we currently processing softirq?
*/
#define in_irq() (hardirq_count())
#define in_softirq() (softirq_count())
#define in_interrupt() (irq_count())
+#define in_serving_softirq() (softirq_count() & SOFTIRQ_OFFSET)
/*
* Are we in NMI context?
@@ -131,14 +136,16 @@ extern void synchronize_irq(unsigned int irq);
struct task_struct;
-#ifndef CONFIG_VIRT_CPU_ACCOUNTING
+#if !defined(CONFIG_VIRT_CPU_ACCOUNTING) && !defined(CONFIG_IRQ_TIME_ACCOUNTING)
static inline void account_system_vtime(struct task_struct *tsk)
{
}
+#else
+extern void account_system_vtime(struct task_struct *tsk);
#endif
#if defined(CONFIG_NO_HZ)
-#if defined(CONFIG_TINY_RCU)
+#if defined(CONFIG_TINY_RCU) || defined(CONFIG_TINY_PREEMPT_RCU)
extern void rcu_enter_nohz(void);
extern void rcu_exit_nohz(void);
diff --git a/include/linux/htirq.h b/include/linux/htirq.h
index c96ea46737d0..70a1dbbf2093 100644
--- a/include/linux/htirq.h
+++ b/include/linux/htirq.h
@@ -9,8 +9,9 @@ struct ht_irq_msg {
/* Helper functions.. */
void fetch_ht_irq_msg(unsigned int irq, struct ht_irq_msg *msg);
void write_ht_irq_msg(unsigned int irq, struct ht_irq_msg *msg);
-void mask_ht_irq(unsigned int irq);
-void unmask_ht_irq(unsigned int irq);
+struct irq_data;
+void mask_ht_irq(struct irq_data *data);
+void unmask_ht_irq(struct irq_data *data);
/* The arch hook for getting things started */
int arch_setup_ht_irq(unsigned int irq, struct pci_dev *dev);
diff --git a/include/linux/idr.h b/include/linux/idr.h
index e968db71e33a..cdb715e58e3e 100644
--- a/include/linux/idr.h
+++ b/include/linux/idr.h
@@ -50,14 +50,14 @@
struct idr_layer {
unsigned long bitmap; /* A zero bit means "space here" */
- struct idr_layer *ary[1<<IDR_BITS];
+ struct idr_layer __rcu *ary[1<<IDR_BITS];
int count; /* When zero, we can release it */
int layer; /* distance from leaf */
struct rcu_head rcu_head;
};
struct idr {
- struct idr_layer *top;
+ struct idr_layer __rcu *top;
struct idr_layer *id_free;
int layers; /* only valid without concurrent changes */
int id_free_cnt;
diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index 1f43fa56f600..2fea6c8ef6ba 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -82,11 +82,17 @@ extern struct group_info init_groups;
# define CAP_INIT_BSET CAP_FULL_SET
#ifdef CONFIG_TREE_PREEMPT_RCU
+#define INIT_TASK_RCU_TREE_PREEMPT() \
+ .rcu_blocked_node = NULL,
+#else
+#define INIT_TASK_RCU_TREE_PREEMPT(tsk)
+#endif
+#ifdef CONFIG_PREEMPT_RCU
#define INIT_TASK_RCU_PREEMPT(tsk) \
.rcu_read_lock_nesting = 0, \
.rcu_read_unlock_special = 0, \
- .rcu_blocked_node = NULL, \
- .rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry),
+ .rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry), \
+ INIT_TASK_RCU_TREE_PREEMPT()
#else
#define INIT_TASK_RCU_PREEMPT(tsk)
#endif
@@ -137,8 +143,8 @@ extern struct cred init_cred;
.children = LIST_HEAD_INIT(tsk.children), \
.sibling = LIST_HEAD_INIT(tsk.sibling), \
.group_leader = &tsk, \
- .real_cred = &init_cred, \
- .cred = &init_cred, \
+ RCU_INIT_POINTER(.real_cred, &init_cred), \
+ RCU_INIT_POINTER(.cred, &init_cred), \
.cred_guard_mutex = \
__MUTEX_INITIALIZER(tsk.cred_guard_mutex), \
.comm = "swapper", \
diff --git a/include/linux/input.h b/include/linux/input.h
index 896a92227bc4..d6ae1761be97 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -1196,7 +1196,7 @@ struct input_dev {
int (*flush)(struct input_dev *dev, struct file *file);
int (*event)(struct input_dev *dev, unsigned int type, unsigned int code, int value);
- struct input_handle *grab;
+ struct input_handle __rcu *grab;
spinlock_t event_lock;
struct mutex mutex;
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index a0384a4d1e6f..414328577ced 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -18,6 +18,7 @@
#include <asm/atomic.h>
#include <asm/ptrace.h>
#include <asm/system.h>
+#include <trace/events/irq.h>
/*
* These correspond to the IORESOURCE_IRQ_* defines in
@@ -407,7 +408,12 @@ asmlinkage void do_softirq(void);
asmlinkage void __do_softirq(void);
extern void open_softirq(int nr, void (*action)(struct softirq_action *));
extern void softirq_init(void);
-#define __raise_softirq_irqoff(nr) do { or_softirq_pending(1UL << (nr)); } while (0)
+static inline void __raise_softirq_irqoff(unsigned int nr)
+{
+ trace_softirq_raise((struct softirq_action *)(unsigned long)nr, NULL);
+ or_softirq_pending(1UL << nr);
+}
+
extern void raise_softirq_irqoff(unsigned int nr);
extern void raise_softirq(unsigned int nr);
extern void wakeup_softirqd(void);
@@ -641,11 +647,8 @@ static inline void init_irq_proc(void)
struct seq_file;
int show_interrupts(struct seq_file *p, void *v);
-struct irq_desc;
-
extern int early_irq_init(void);
extern int arch_probe_nr_irqs(void);
extern int arch_early_irq_init(void);
-extern int arch_init_chip_data(struct irq_desc *desc, int node);
#endif
diff --git a/include/linux/iocontext.h b/include/linux/iocontext.h
index 64d529133031..3e70b21884a9 100644
--- a/include/linux/iocontext.h
+++ b/include/linux/iocontext.h
@@ -53,7 +53,7 @@ struct io_context {
struct radix_tree_root radix_root;
struct hlist_head cic_list;
- void *ioc_data;
+ void __rcu *ioc_data;
};
static inline struct io_context *ioc_task_link(struct io_context *ioc)
diff --git a/include/linux/irq.h b/include/linux/irq.h
index c03243ad84b4..e9639115dff1 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -72,6 +72,10 @@ typedef void (*irq_flow_handler_t)(unsigned int irq,
#define IRQ_ONESHOT 0x08000000 /* IRQ is not unmasked after hardirq */
#define IRQ_NESTED_THREAD 0x10000000 /* IRQ is nested into another, no own handler thread */
+#define IRQF_MODIFY_MASK \
+ (IRQ_TYPE_SENSE_MASK | IRQ_NOPROBE | IRQ_NOREQUEST | \
+ IRQ_NOAUTOEN | IRQ_MOVE_PCNTXT | IRQ_LEVEL)
+
#ifdef CONFIG_IRQ_PER_CPU
# define CHECK_IRQ_PER_CPU(var) ((var) & IRQ_PER_CPU)
# define IRQ_NO_BALANCING_MASK (IRQ_PER_CPU | IRQ_NO_BALANCING)
@@ -80,36 +84,77 @@ typedef void (*irq_flow_handler_t)(unsigned int irq,
# define IRQ_NO_BALANCING_MASK IRQ_NO_BALANCING
#endif
-struct proc_dir_entry;
struct msi_desc;
/**
+ * struct irq_data - per irq and irq chip data passed down to chip functions
+ * @irq: interrupt number
+ * @node: node index useful for balancing
+ * @chip: low level interrupt hardware access
+ * @handler_data: per-IRQ data for the irq_chip methods
+ * @chip_data: platform-specific per-chip private data for the chip
+ * methods, to allow shared chip implementations
+ * @msi_desc: MSI descriptor
+ * @affinity: IRQ affinity on SMP
+ *
+ * The fields here need to overlay the ones in irq_desc until we
+ * cleaned up the direct references and switched everything over to
+ * irq_data.
+ */
+struct irq_data {
+ unsigned int irq;
+ unsigned int node;
+ struct irq_chip *chip;
+ void *handler_data;
+ void *chip_data;
+ struct msi_desc *msi_desc;
+#ifdef CONFIG_SMP
+ cpumask_var_t affinity;
+#endif
+};
+
+/**
* struct irq_chip - hardware interrupt chip descriptor
*
* @name: name for /proc/interrupts
- * @startup: start up the interrupt (defaults to ->enable if NULL)
- * @shutdown: shut down the interrupt (defaults to ->disable if NULL)
- * @enable: enable the interrupt (defaults to chip->unmask if NULL)
- * @disable: disable the interrupt
- * @ack: start of a new interrupt
- * @mask: mask an interrupt source
- * @mask_ack: ack and mask an interrupt source
- * @unmask: unmask an interrupt source
- * @eoi: end of interrupt - chip level
- * @end: end of interrupt - flow level
- * @set_affinity: set the CPU affinity on SMP machines
- * @retrigger: resend an IRQ to the CPU
- * @set_type: set the flow type (IRQ_TYPE_LEVEL/etc.) of an IRQ
- * @set_wake: enable/disable power-management wake-on of an IRQ
+ * @startup: deprecated, replaced by irq_startup
+ * @shutdown: deprecated, replaced by irq_shutdown
+ * @enable: deprecated, replaced by irq_enable
+ * @disable: deprecated, replaced by irq_disable
+ * @ack: deprecated, replaced by irq_ack
+ * @mask: deprecated, replaced by irq_mask
+ * @mask_ack: deprecated, replaced by irq_mask_ack
+ * @unmask: deprecated, replaced by irq_unmask
+ * @eoi: deprecated, replaced by irq_eoi
+ * @end: deprecated, will go away with __do_IRQ()
+ * @set_affinity: deprecated, replaced by irq_set_affinity
+ * @retrigger: deprecated, replaced by irq_retrigger
+ * @set_type: deprecated, replaced by irq_set_type
+ * @set_wake: deprecated, replaced by irq_wake
+ * @bus_lock: deprecated, replaced by irq_bus_lock
+ * @bus_sync_unlock: deprecated, replaced by irq_bus_sync_unlock
*
- * @bus_lock: function to lock access to slow bus (i2c) chips
- * @bus_sync_unlock: function to sync and unlock slow bus (i2c) chips
+ * @irq_startup: start up the interrupt (defaults to ->enable if NULL)
+ * @irq_shutdown: shut down the interrupt (defaults to ->disable if NULL)
+ * @irq_enable: enable the interrupt (defaults to chip->unmask if NULL)
+ * @irq_disable: disable the interrupt
+ * @irq_ack: start of a new interrupt
+ * @irq_mask: mask an interrupt source
+ * @irq_mask_ack: ack and mask an interrupt source
+ * @irq_unmask: unmask an interrupt source
+ * @irq_eoi: end of interrupt
+ * @irq_set_affinity: set the CPU affinity on SMP machines
+ * @irq_retrigger: resend an IRQ to the CPU
+ * @irq_set_type: set the flow type (IRQ_TYPE_LEVEL/etc.) of an IRQ
+ * @irq_set_wake: enable/disable power-management wake-on of an IRQ
+ * @irq_bus_lock: function to lock access to slow bus (i2c) chips
+ * @irq_bus_sync_unlock:function to sync and unlock slow bus (i2c) chips
*
* @release: release function solely used by UML
- * @typename: obsoleted by name, kept as migration helper
*/
struct irq_chip {
const char *name;
+#ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED
unsigned int (*startup)(unsigned int irq);
void (*shutdown)(unsigned int irq);
void (*enable)(unsigned int irq);
@@ -130,154 +175,66 @@ struct irq_chip {
void (*bus_lock)(unsigned int irq);
void (*bus_sync_unlock)(unsigned int irq);
+#endif
+ unsigned int (*irq_startup)(struct irq_data *data);
+ void (*irq_shutdown)(struct irq_data *data);
+ void (*irq_enable)(struct irq_data *data);
+ void (*irq_disable)(struct irq_data *data);
+
+ void (*irq_ack)(struct irq_data *data);
+ void (*irq_mask)(struct irq_data *data);
+ void (*irq_mask_ack)(struct irq_data *data);
+ void (*irq_unmask)(struct irq_data *data);
+ void (*irq_eoi)(struct irq_data *data);
+
+ int (*irq_set_affinity)(struct irq_data *data, const struct cpumask *dest, bool force);
+ int (*irq_retrigger)(struct irq_data *data);
+ int (*irq_set_type)(struct irq_data *data, unsigned int flow_type);
+ int (*irq_set_wake)(struct irq_data *data, unsigned int on);
+
+ void (*irq_bus_lock)(struct irq_data *data);
+ void (*irq_bus_sync_unlock)(struct irq_data *data);
/* Currently used only by UML, might disappear one day.*/
#ifdef CONFIG_IRQ_RELEASE_METHOD
void (*release)(unsigned int irq, void *dev_id);
#endif
- /*
- * For compatibility, ->typename is copied into ->name.
- * Will disappear.
- */
- const char *typename;
};
-struct timer_rand_state;
-struct irq_2_iommu;
-/**
- * struct irq_desc - interrupt descriptor
- * @irq: interrupt number for this descriptor
- * @timer_rand_state: pointer to timer rand state struct
- * @kstat_irqs: irq stats per cpu
- * @irq_2_iommu: iommu with this irq
- * @handle_irq: highlevel irq-events handler [if NULL, __do_IRQ()]
- * @chip: low level interrupt hardware access
- * @msi_desc: MSI descriptor
- * @handler_data: per-IRQ data for the irq_chip methods
- * @chip_data: platform-specific per-chip private data for the chip
- * methods, to allow shared chip implementations
- * @action: the irq action chain
- * @status: status information
- * @depth: disable-depth, for nested irq_disable() calls
- * @wake_depth: enable depth, for multiple set_irq_wake() callers
- * @irq_count: stats field to detect stalled irqs
- * @last_unhandled: aging timer for unhandled count
- * @irqs_unhandled: stats field for spurious unhandled interrupts
- * @lock: locking for SMP
- * @affinity: IRQ affinity on SMP
- * @node: node index useful for balancing
- * @pending_mask: pending rebalanced interrupts
- * @threads_active: number of irqaction threads currently running
- * @wait_for_threads: wait queue for sync_irq to wait for threaded handlers
- * @dir: /proc/irq/ procfs entry
- * @name: flow handler name for /proc/interrupts output
- */
-struct irq_desc {
- unsigned int irq;
- struct timer_rand_state *timer_rand_state;
- unsigned int *kstat_irqs;
-#ifdef CONFIG_INTR_REMAP
- struct irq_2_iommu *irq_2_iommu;
-#endif
- irq_flow_handler_t handle_irq;
- struct irq_chip *chip;
- struct msi_desc *msi_desc;
- void *handler_data;
- void *chip_data;
- struct irqaction *action; /* IRQ action list */
- unsigned int status; /* IRQ status */
-
- unsigned int depth; /* nested irq disables */
- unsigned int wake_depth; /* nested wake enables */
- unsigned int irq_count; /* For detecting broken IRQs */
- unsigned long last_unhandled; /* Aging timer for unhandled count */
- unsigned int irqs_unhandled;
- raw_spinlock_t lock;
-#ifdef CONFIG_SMP
- cpumask_var_t affinity;
- const struct cpumask *affinity_hint;
- unsigned int node;
-#ifdef CONFIG_GENERIC_PENDING_IRQ
- cpumask_var_t pending_mask;
-#endif
-#endif
- atomic_t threads_active;
- wait_queue_head_t wait_for_threads;
-#ifdef CONFIG_PROC_FS
- struct proc_dir_entry *dir;
-#endif
- const char *name;
-} ____cacheline_internodealigned_in_smp;
+/* This include will go away once we isolated irq_desc usage to core code */
+#include <linux/irqdesc.h>
-extern void arch_init_copy_chip_data(struct irq_desc *old_desc,
- struct irq_desc *desc, int node);
-extern void arch_free_chip_data(struct irq_desc *old_desc, struct irq_desc *desc);
+/*
+ * Pick up the arch-dependent methods:
+ */
+#include <asm/hw_irq.h>
-#ifndef CONFIG_SPARSE_IRQ
-extern struct irq_desc irq_desc[NR_IRQS];
+#ifndef NR_IRQS_LEGACY
+# define NR_IRQS_LEGACY 0
#endif
-#ifdef CONFIG_NUMA_IRQ_DESC
-extern struct irq_desc *move_irq_desc(struct irq_desc *old_desc, int node);
-#else
-static inline struct irq_desc *move_irq_desc(struct irq_desc *desc, int node)
-{
- return desc;
-}
+#ifndef ARCH_IRQ_INIT_FLAGS
+# define ARCH_IRQ_INIT_FLAGS 0
#endif
-extern struct irq_desc *irq_to_desc_alloc_node(unsigned int irq, int node);
-
-/*
- * Pick up the arch-dependent methods:
- */
-#include <asm/hw_irq.h>
+#define IRQ_DEFAULT_INIT_FLAGS (IRQ_DISABLED | ARCH_IRQ_INIT_FLAGS)
+struct irqaction;
extern int setup_irq(unsigned int irq, struct irqaction *new);
extern void remove_irq(unsigned int irq, struct irqaction *act);
#ifdef CONFIG_GENERIC_HARDIRQS
-#ifdef CONFIG_SMP
-
-#ifdef CONFIG_GENERIC_PENDING_IRQ
-
+#if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_PENDING_IRQ)
void move_native_irq(int irq);
void move_masked_irq(int irq);
-
-#else /* CONFIG_GENERIC_PENDING_IRQ */
-
-static inline void move_irq(int irq)
-{
-}
-
-static inline void move_native_irq(int irq)
-{
-}
-
-static inline void move_masked_irq(int irq)
-{
-}
-
-#endif /* CONFIG_GENERIC_PENDING_IRQ */
-
-#else /* CONFIG_SMP */
-
-#define move_native_irq(x)
-#define move_masked_irq(x)
-
-#endif /* CONFIG_SMP */
+#else
+static inline void move_native_irq(int irq) { }
+static inline void move_masked_irq(int irq) { }
+#endif
extern int no_irq_affinity;
-static inline int irq_balancing_disabled(unsigned int irq)
-{
- struct irq_desc *desc;
-
- desc = irq_to_desc(irq);
- return desc->status & IRQ_NO_BALANCING_MASK;
-}
-
/* Handle irq action chains: */
extern irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action);
@@ -293,42 +250,10 @@ extern void handle_percpu_irq(unsigned int irq, struct irq_desc *desc);
extern void handle_bad_irq(unsigned int irq, struct irq_desc *desc);
extern void handle_nested_irq(unsigned int irq);
-/*
- * Monolithic do_IRQ implementation.
- */
-#ifndef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ
-extern unsigned int __do_IRQ(unsigned int irq);
-#endif
-
-/*
- * Architectures call this to let the generic IRQ layer
- * handle an interrupt. If the descriptor is attached to an
- * irqchip-style controller then we call the ->handle_irq() handler,
- * and it calls __do_IRQ() if it's attached to an irqtype-style controller.
- */
-static inline void generic_handle_irq_desc(unsigned int irq, struct irq_desc *desc)
-{
-#ifdef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ
- desc->handle_irq(irq, desc);
-#else
- if (likely(desc->handle_irq))
- desc->handle_irq(irq, desc);
- else
- __do_IRQ(irq);
-#endif
-}
-
-static inline void generic_handle_irq(unsigned int irq)
-{
- generic_handle_irq_desc(irq, irq_to_desc(irq));
-}
-
/* Handling of unhandled and spurious interrupts: */
extern void note_interrupt(unsigned int irq, struct irq_desc *desc,
irqreturn_t action_ret);
-/* Resending of interrupts :*/
-void check_irq_resend(struct irq_desc *desc, unsigned int irq);
/* Enable/disable irq debugging output: */
extern int noirqdebug_setup(char *str);
@@ -351,16 +276,6 @@ extern void
__set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
const char *name);
-/* caller has locked the irq_desc and both params are valid */
-static inline void __set_irq_handler_unlocked(int irq,
- irq_flow_handler_t handler)
-{
- struct irq_desc *desc;
-
- desc = irq_to_desc(irq);
- desc->handle_irq = handler;
-}
-
/*
* Set a highlevel flow handler for a given IRQ:
*/
@@ -384,141 +299,121 @@ set_irq_chained_handler(unsigned int irq,
extern void set_irq_nested_thread(unsigned int irq, int nest);
-extern void set_irq_noprobe(unsigned int irq);
-extern void set_irq_probe(unsigned int irq);
+void irq_modify_status(unsigned int irq, unsigned long clr, unsigned long set);
+
+static inline void irq_set_status_flags(unsigned int irq, unsigned long set)
+{
+ irq_modify_status(irq, 0, set);
+}
+
+static inline void irq_clear_status_flags(unsigned int irq, unsigned long clr)
+{
+ irq_modify_status(irq, clr, 0);
+}
+
+static inline void set_irq_noprobe(unsigned int irq)
+{
+ irq_modify_status(irq, 0, IRQ_NOPROBE);
+}
+
+static inline void set_irq_probe(unsigned int irq)
+{
+ irq_modify_status(irq, IRQ_NOPROBE, 0);
+}
/* Handle dynamic irq creation and destruction */
extern unsigned int create_irq_nr(unsigned int irq_want, int node);
extern int create_irq(void);
extern void destroy_irq(unsigned int irq);
-/* Test to see if a driver has successfully requested an irq */
-static inline int irq_has_action(unsigned int irq)
+/*
+ * Dynamic irq helper functions. Obsolete. Use irq_alloc_desc* and
+ * irq_free_desc instead.
+ */
+extern void dynamic_irq_cleanup(unsigned int irq);
+static inline void dynamic_irq_init(unsigned int irq)
{
- struct irq_desc *desc = irq_to_desc(irq);
- return desc->action != NULL;
+ dynamic_irq_cleanup(irq);
}
-/* Dynamic irq helper functions */
-extern void dynamic_irq_init(unsigned int irq);
-void dynamic_irq_init_keep_chip_data(unsigned int irq);
-extern void dynamic_irq_cleanup(unsigned int irq);
-void dynamic_irq_cleanup_keep_chip_data(unsigned int irq);
-
/* Set/get chip/data for an IRQ: */
extern int set_irq_chip(unsigned int irq, struct irq_chip *chip);
extern int set_irq_data(unsigned int irq, void *data);
extern int set_irq_chip_data(unsigned int irq, void *data);
extern int set_irq_type(unsigned int irq, unsigned int type);
extern int set_irq_msi(unsigned int irq, struct msi_desc *entry);
+extern struct irq_data *irq_get_irq_data(unsigned int irq);
-#define get_irq_chip(irq) (irq_to_desc(irq)->chip)
-#define get_irq_chip_data(irq) (irq_to_desc(irq)->chip_data)
-#define get_irq_data(irq) (irq_to_desc(irq)->handler_data)
-#define get_irq_msi(irq) (irq_to_desc(irq)->msi_desc)
-
-#define get_irq_desc_chip(desc) ((desc)->chip)
-#define get_irq_desc_chip_data(desc) ((desc)->chip_data)
-#define get_irq_desc_data(desc) ((desc)->handler_data)
-#define get_irq_desc_msi(desc) ((desc)->msi_desc)
-
-#endif /* CONFIG_GENERIC_HARDIRQS */
-
-#endif /* !CONFIG_S390 */
-
-#ifdef CONFIG_SMP
-/**
- * alloc_desc_masks - allocate cpumasks for irq_desc
- * @desc: pointer to irq_desc struct
- * @node: node which will be handling the cpumasks
- * @boot: true if need bootmem
- *
- * Allocates affinity and pending_mask cpumask if required.
- * Returns true if successful (or not required).
- */
-static inline bool alloc_desc_masks(struct irq_desc *desc, int node,
- bool boot)
+static inline struct irq_chip *get_irq_chip(unsigned int irq)
{
- gfp_t gfp = GFP_ATOMIC;
-
- if (boot)
- gfp = GFP_NOWAIT;
-
-#ifdef CONFIG_CPUMASK_OFFSTACK
- if (!alloc_cpumask_var_node(&desc->affinity, gfp, node))
- return false;
+ struct irq_data *d = irq_get_irq_data(irq);
+ return d ? d->chip : NULL;
+}
-#ifdef CONFIG_GENERIC_PENDING_IRQ
- if (!alloc_cpumask_var_node(&desc->pending_mask, gfp, node)) {
- free_cpumask_var(desc->affinity);
- return false;
- }
-#endif
-#endif
- return true;
+static inline struct irq_chip *irq_data_get_irq_chip(struct irq_data *d)
+{
+ return d->chip;
}
-static inline void init_desc_masks(struct irq_desc *desc)
+static inline void *get_irq_chip_data(unsigned int irq)
{
- cpumask_setall(desc->affinity);
-#ifdef CONFIG_GENERIC_PENDING_IRQ
- cpumask_clear(desc->pending_mask);
-#endif
+ struct irq_data *d = irq_get_irq_data(irq);
+ return d ? d->chip_data : NULL;
}
-/**
- * init_copy_desc_masks - copy cpumasks for irq_desc
- * @old_desc: pointer to old irq_desc struct
- * @new_desc: pointer to new irq_desc struct
- *
- * Insures affinity and pending_masks are copied to new irq_desc.
- * If !CONFIG_CPUMASKS_OFFSTACK the cpumasks are embedded in the
- * irq_desc struct so the copy is redundant.
- */
+static inline void *irq_data_get_irq_chip_data(struct irq_data *d)
+{
+ return d->chip_data;
+}
-static inline void init_copy_desc_masks(struct irq_desc *old_desc,
- struct irq_desc *new_desc)
+static inline void *get_irq_data(unsigned int irq)
{
-#ifdef CONFIG_CPUMASK_OFFSTACK
- cpumask_copy(new_desc->affinity, old_desc->affinity);
+ struct irq_data *d = irq_get_irq_data(irq);
+ return d ? d->handler_data : NULL;
+}
-#ifdef CONFIG_GENERIC_PENDING_IRQ
- cpumask_copy(new_desc->pending_mask, old_desc->pending_mask);
-#endif
-#endif
+static inline void *irq_data_get_irq_data(struct irq_data *d)
+{
+ return d->handler_data;
}
-static inline void free_desc_masks(struct irq_desc *old_desc,
- struct irq_desc *new_desc)
+static inline struct msi_desc *get_irq_msi(unsigned int irq)
{
- free_cpumask_var(old_desc->affinity);
+ struct irq_data *d = irq_get_irq_data(irq);
+ return d ? d->msi_desc : NULL;
+}
-#ifdef CONFIG_GENERIC_PENDING_IRQ
- free_cpumask_var(old_desc->pending_mask);
-#endif
+static inline struct msi_desc *irq_data_get_msi(struct irq_data *d)
+{
+ return d->msi_desc;
}
-#else /* !CONFIG_SMP */
+int irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node);
+void irq_free_descs(unsigned int irq, unsigned int cnt);
+int irq_reserve_irqs(unsigned int from, unsigned int cnt);
-static inline bool alloc_desc_masks(struct irq_desc *desc, int node,
- bool boot)
+static inline int irq_alloc_desc(int node)
{
- return true;
+ return irq_alloc_descs(-1, 0, 1, node);
}
-static inline void init_desc_masks(struct irq_desc *desc)
+static inline int irq_alloc_desc_at(unsigned int at, int node)
{
+ return irq_alloc_descs(at, at, 1, node);
}
-static inline void init_copy_desc_masks(struct irq_desc *old_desc,
- struct irq_desc *new_desc)
+static inline int irq_alloc_desc_from(unsigned int from, int node)
{
+ return irq_alloc_descs(-1, from, 1, node);
}
-static inline void free_desc_masks(struct irq_desc *old_desc,
- struct irq_desc *new_desc)
+static inline void irq_free_desc(unsigned int irq)
{
+ irq_free_descs(irq, 1);
}
-#endif /* CONFIG_SMP */
+
+#endif /* CONFIG_GENERIC_HARDIRQS */
+
+#endif /* !CONFIG_S390 */
#endif /* _LINUX_IRQ_H */
diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h
new file mode 100644
index 000000000000..4fa09d4d0b71
--- /dev/null
+++ b/include/linux/irq_work.h
@@ -0,0 +1,20 @@
+#ifndef _LINUX_IRQ_WORK_H
+#define _LINUX_IRQ_WORK_H
+
+struct irq_work {
+ struct irq_work *next;
+ void (*func)(struct irq_work *);
+};
+
+static inline
+void init_irq_work(struct irq_work *entry, void (*func)(struct irq_work *))
+{
+ entry->next = NULL;
+ entry->func = func;
+}
+
+bool irq_work_queue(struct irq_work *entry);
+void irq_work_run(void);
+void irq_work_sync(struct irq_work *entry);
+
+#endif /* _LINUX_IRQ_WORK_H */
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
new file mode 100644
index 000000000000..979c68cc7458
--- /dev/null
+++ b/include/linux/irqdesc.h
@@ -0,0 +1,159 @@
+#ifndef _LINUX_IRQDESC_H
+#define _LINUX_IRQDESC_H
+
+/*
+ * Core internal functions to deal with irq descriptors
+ *
+ * This include will move to kernel/irq once we cleaned up the tree.
+ * For now it's included from <linux/irq.h>
+ */
+
+struct proc_dir_entry;
+struct timer_rand_state;
+/**
+ * struct irq_desc - interrupt descriptor
+ * @irq_data: per irq and chip data passed down to chip functions
+ * @timer_rand_state: pointer to timer rand state struct
+ * @kstat_irqs: irq stats per cpu
+ * @handle_irq: highlevel irq-events handler [if NULL, __do_IRQ()]
+ * @action: the irq action chain
+ * @status: status information
+ * @depth: disable-depth, for nested irq_disable() calls
+ * @wake_depth: enable depth, for multiple set_irq_wake() callers
+ * @irq_count: stats field to detect stalled irqs
+ * @last_unhandled: aging timer for unhandled count
+ * @irqs_unhandled: stats field for spurious unhandled interrupts
+ * @lock: locking for SMP
+ * @pending_mask: pending rebalanced interrupts
+ * @threads_active: number of irqaction threads currently running
+ * @wait_for_threads: wait queue for sync_irq to wait for threaded handlers
+ * @dir: /proc/irq/ procfs entry
+ * @name: flow handler name for /proc/interrupts output
+ */
+struct irq_desc {
+
+#ifdef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED
+ struct irq_data irq_data;
+#else
+ /*
+ * This union will go away, once we fixed the direct access to
+ * irq_desc all over the place. The direct fields are a 1:1
+ * overlay of irq_data.
+ */
+ union {
+ struct irq_data irq_data;
+ struct {
+ unsigned int irq;
+ unsigned int node;
+ struct irq_chip *chip;
+ void *handler_data;
+ void *chip_data;
+ struct msi_desc *msi_desc;
+#ifdef CONFIG_SMP
+ cpumask_var_t affinity;
+#endif
+ };
+ };
+#endif
+
+ struct timer_rand_state *timer_rand_state;
+ unsigned int *kstat_irqs;
+ irq_flow_handler_t handle_irq;
+ struct irqaction *action; /* IRQ action list */
+ unsigned int status; /* IRQ status */
+
+ unsigned int depth; /* nested irq disables */
+ unsigned int wake_depth; /* nested wake enables */
+ unsigned int irq_count; /* For detecting broken IRQs */
+ unsigned long last_unhandled; /* Aging timer for unhandled count */
+ unsigned int irqs_unhandled;
+ raw_spinlock_t lock;
+#ifdef CONFIG_SMP
+ const struct cpumask *affinity_hint;
+#ifdef CONFIG_GENERIC_PENDING_IRQ
+ cpumask_var_t pending_mask;
+#endif
+#endif
+ atomic_t threads_active;
+ wait_queue_head_t wait_for_threads;
+#ifdef CONFIG_PROC_FS
+ struct proc_dir_entry *dir;
+#endif
+ const char *name;
+} ____cacheline_internodealigned_in_smp;
+
+#ifndef CONFIG_SPARSE_IRQ
+extern struct irq_desc irq_desc[NR_IRQS];
+#endif
+
+/* Will be removed once the last users in power and sh are gone */
+extern struct irq_desc *irq_to_desc_alloc_node(unsigned int irq, int node);
+static inline struct irq_desc *move_irq_desc(struct irq_desc *desc, int node)
+{
+ return desc;
+}
+
+#ifdef CONFIG_GENERIC_HARDIRQS
+
+#define get_irq_desc_chip(desc) ((desc)->irq_data.chip)
+#define get_irq_desc_chip_data(desc) ((desc)->irq_data.chip_data)
+#define get_irq_desc_data(desc) ((desc)->irq_data.handler_data)
+#define get_irq_desc_msi(desc) ((desc)->irq_data.msi_desc)
+
+/*
+ * Monolithic do_IRQ implementation.
+ */
+#ifndef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ
+extern unsigned int __do_IRQ(unsigned int irq);
+#endif
+
+/*
+ * Architectures call this to let the generic IRQ layer
+ * handle an interrupt. If the descriptor is attached to an
+ * irqchip-style controller then we call the ->handle_irq() handler,
+ * and it calls __do_IRQ() if it's attached to an irqtype-style controller.
+ */
+static inline void generic_handle_irq_desc(unsigned int irq, struct irq_desc *desc)
+{
+#ifdef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ
+ desc->handle_irq(irq, desc);
+#else
+ if (likely(desc->handle_irq))
+ desc->handle_irq(irq, desc);
+ else
+ __do_IRQ(irq);
+#endif
+}
+
+static inline void generic_handle_irq(unsigned int irq)
+{
+ generic_handle_irq_desc(irq, irq_to_desc(irq));
+}
+
+/* Test to see if a driver has successfully requested an irq */
+static inline int irq_has_action(unsigned int irq)
+{
+ struct irq_desc *desc = irq_to_desc(irq);
+ return desc->action != NULL;
+}
+
+static inline int irq_balancing_disabled(unsigned int irq)
+{
+ struct irq_desc *desc;
+
+ desc = irq_to_desc(irq);
+ return desc->status & IRQ_NO_BALANCING_MASK;
+}
+
+/* caller has locked the irq_desc and both params are valid */
+static inline void __set_irq_handler_unlocked(int irq,
+ irq_flow_handler_t handler)
+{
+ struct irq_desc *desc;
+
+ desc = irq_to_desc(irq);
+ desc->handle_irq = handler;
+}
+#endif
+
+#endif
diff --git a/include/linux/irqnr.h b/include/linux/irqnr.h
index 7bf89bc8cbca..05aa8c23483f 100644
--- a/include/linux/irqnr.h
+++ b/include/linux/irqnr.h
@@ -25,6 +25,7 @@
extern int nr_irqs;
extern struct irq_desc *irq_to_desc(unsigned int irq);
+unsigned int irq_get_next_irq(unsigned int offset);
# define for_each_irq_desc(irq, desc) \
for (irq = 0, desc = irq_to_desc(irq); irq < nr_irqs; \
@@ -47,6 +48,10 @@ extern struct irq_desc *irq_to_desc(unsigned int irq);
#define irq_node(irq) 0
#endif
+# define for_each_active_irq(irq) \
+ for (irq = irq_get_next_irq(0); irq < nr_irqs; \
+ irq = irq_get_next_irq(irq + 1))
+
#endif /* CONFIG_GENERIC_HARDIRQS */
#define for_each_irq_nr(irq) \
diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h
new file mode 100644
index 000000000000..b67cb180e6e9
--- /dev/null
+++ b/include/linux/jump_label.h
@@ -0,0 +1,74 @@
+#ifndef _LINUX_JUMP_LABEL_H
+#define _LINUX_JUMP_LABEL_H
+
+#if defined(CC_HAVE_ASM_GOTO) && defined(CONFIG_HAVE_ARCH_JUMP_LABEL)
+# include <asm/jump_label.h>
+# define HAVE_JUMP_LABEL
+#endif
+
+enum jump_label_type {
+ JUMP_LABEL_ENABLE,
+ JUMP_LABEL_DISABLE
+};
+
+struct module;
+
+#ifdef HAVE_JUMP_LABEL
+
+extern struct jump_entry __start___jump_table[];
+extern struct jump_entry __stop___jump_table[];
+
+extern void arch_jump_label_transform(struct jump_entry *entry,
+ enum jump_label_type type);
+extern void arch_jump_label_text_poke_early(jump_label_t addr);
+extern void jump_label_update(unsigned long key, enum jump_label_type type);
+extern void jump_label_apply_nops(struct module *mod);
+extern int jump_label_text_reserved(void *start, void *end);
+
+#define jump_label_enable(key) \
+ jump_label_update((unsigned long)key, JUMP_LABEL_ENABLE);
+
+#define jump_label_disable(key) \
+ jump_label_update((unsigned long)key, JUMP_LABEL_DISABLE);
+
+#else
+
+#define JUMP_LABEL(key, label) \
+do { \
+ if (unlikely(*key)) \
+ goto label; \
+} while (0)
+
+#define jump_label_enable(cond_var) \
+do { \
+ *(cond_var) = 1; \
+} while (0)
+
+#define jump_label_disable(cond_var) \
+do { \
+ *(cond_var) = 0; \
+} while (0)
+
+static inline int jump_label_apply_nops(struct module *mod)
+{
+ return 0;
+}
+
+static inline int jump_label_text_reserved(void *start, void *end)
+{
+ return 0;
+}
+
+#endif
+
+#define COND_STMT(key, stmt) \
+do { \
+ __label__ jl_enabled; \
+ JUMP_LABEL(key, jl_enabled); \
+ if (0) { \
+jl_enabled: \
+ stmt; \
+ } \
+} while (0)
+
+#endif
diff --git a/include/linux/jump_label_ref.h b/include/linux/jump_label_ref.h
new file mode 100644
index 000000000000..e5d012ad92c6
--- /dev/null
+++ b/include/linux/jump_label_ref.h
@@ -0,0 +1,44 @@
+#ifndef _LINUX_JUMP_LABEL_REF_H
+#define _LINUX_JUMP_LABEL_REF_H
+
+#include <linux/jump_label.h>
+#include <asm/atomic.h>
+
+#ifdef HAVE_JUMP_LABEL
+
+static inline void jump_label_inc(atomic_t *key)
+{
+ if (atomic_add_return(1, key) == 1)
+ jump_label_enable(key);
+}
+
+static inline void jump_label_dec(atomic_t *key)
+{
+ if (atomic_dec_and_test(key))
+ jump_label_disable(key);
+}
+
+#else /* !HAVE_JUMP_LABEL */
+
+static inline void jump_label_inc(atomic_t *key)
+{
+ atomic_inc(key);
+}
+
+static inline void jump_label_dec(atomic_t *key)
+{
+ atomic_dec(key);
+}
+
+#undef JUMP_LABEL
+#define JUMP_LABEL(key, label) \
+do { \
+ if (unlikely(__builtin_choose_expr( \
+ __builtin_types_compatible_p(typeof(key), atomic_t *), \
+ atomic_read((atomic_t *)(key)), *(key)))) \
+ goto label; \
+} while (0)
+
+#endif /* HAVE_JUMP_LABEL */
+
+#endif /* _LINUX_JUMP_LABEL_REF_H */
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 2b0a35e6bc69..1759ba5adce8 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -58,7 +58,18 @@ extern const char linux_proc_banner[];
#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
-#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
+#define roundup(x, y) ( \
+{ \
+ typeof(y) __y = y; \
+ (((x) + (__y - 1)) / __y) * __y; \
+} \
+)
+#define rounddown(x, y) ( \
+{ \
+ typeof(x) __x = (x); \
+ __x - (__x % (y)); \
+} \
+)
#define DIV_ROUND_CLOSEST(x, divisor)( \
{ \
typeof(divisor) __divisor = divisor; \
diff --git a/include/linux/key.h b/include/linux/key.h
index cd50dfa1d4c2..3db0adce1fda 100644
--- a/include/linux/key.h
+++ b/include/linux/key.h
@@ -178,8 +178,9 @@ struct key {
*/
union {
unsigned long value;
+ void __rcu *rcudata;
void *data;
- struct keyring_list *subscriptions;
+ struct keyring_list __rcu *subscriptions;
} payload;
};
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index c13cc48697aa..ac740b26eb10 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -205,7 +205,7 @@ struct kvm {
struct mutex irq_lock;
#ifdef CONFIG_HAVE_KVM_IRQCHIP
- struct kvm_irq_routing_table *irq_routing;
+ struct kvm_irq_routing_table __rcu *irq_routing;
struct hlist_head mask_notifier_list;
struct hlist_head irq_ack_notifier_list;
#endif
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index 06aed8305bf3..71c09b26c759 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -32,6 +32,17 @@ extern int lock_stat;
#define MAX_LOCKDEP_SUBCLASSES 8UL
/*
+ * NR_LOCKDEP_CACHING_CLASSES ... Number of classes
+ * cached in the instance of lockdep_map
+ *
+ * Currently main class (subclass == 0) and signle depth subclass
+ * are cached in lockdep_map. This optimization is mainly targeting
+ * on rq->lock. double_rq_lock() acquires this highly competitive with
+ * single depth.
+ */
+#define NR_LOCKDEP_CACHING_CLASSES 2
+
+/*
* Lock-classes are keyed via unique addresses, by embedding the
* lockclass-key into the kernel (or module) .data section. (For
* static locks we use the lock address itself as the key.)
@@ -138,7 +149,7 @@ void clear_lock_stats(struct lock_class *class);
*/
struct lockdep_map {
struct lock_class_key *key;
- struct lock_class *class_cache;
+ struct lock_class *class_cache[NR_LOCKDEP_CACHING_CLASSES];
const char *name;
#ifdef CONFIG_LOCK_STAT
int cpu;
@@ -424,14 +435,6 @@ do { \
#endif /* CONFIG_LOCKDEP */
-#ifdef CONFIG_GENERIC_HARDIRQS
-extern void early_init_irq_lock_class(void);
-#else
-static inline void early_init_irq_lock_class(void)
-{
-}
-#endif
-
#ifdef CONFIG_TRACE_IRQFLAGS
extern void early_boot_irqs_off(void);
extern void early_boot_irqs_on(void);
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index ee7e258627f9..cb57d657ce4d 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -299,7 +299,7 @@ struct mm_struct {
* new_owner->mm == mm
* new_owner->alloc_lock is held
*/
- struct task_struct *owner;
+ struct task_struct __rcu *owner;
#endif
#ifdef CONFIG_PROC_FS
diff --git a/include/linux/module.h b/include/linux/module.h
index aace066bad8f..b29e7458b966 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -350,7 +350,10 @@ struct module
struct tracepoint *tracepoints;
unsigned int num_tracepoints;
#endif
-
+#ifdef HAVE_JUMP_LABEL
+ struct jump_entry *jump_entries;
+ unsigned int num_jump_entries;
+#endif
#ifdef CONFIG_TRACING
const char **trace_bprintk_fmt_start;
unsigned int num_trace_bprintk_fmt;
diff --git a/include/linux/msi.h b/include/linux/msi.h
index 91b05c171854..05acced439a3 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -10,12 +10,13 @@ struct msi_msg {
};
/* Helper functions */
-struct irq_desc;
-extern void mask_msi_irq(unsigned int irq);
-extern void unmask_msi_irq(unsigned int irq);
-extern void read_msi_msg_desc(struct irq_desc *desc, struct msi_msg *msg);
-extern void get_cached_msi_msg_desc(struct irq_desc *desc, struct msi_msg *msg);
-extern void write_msi_msg_desc(struct irq_desc *desc, struct msi_msg *msg);
+struct irq_data;
+struct msi_desc;
+extern void mask_msi_irq(struct irq_data *data);
+extern void unmask_msi_irq(struct irq_data *data);
+extern void __read_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
+extern void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
+extern void __write_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
extern void read_msi_msg(unsigned int irq, struct msi_msg *msg);
extern void get_cached_msi_msg(unsigned int irq, struct msi_msg *msg);
extern void write_msi_msg(unsigned int irq, struct msi_msg *msg);
diff --git a/include/linux/netfilter/nfnetlink_conntrack.h b/include/linux/netfilter/nfnetlink_conntrack.h
index 9ed534c991b9..70cd0603911c 100644
--- a/include/linux/netfilter/nfnetlink_conntrack.h
+++ b/include/linux/netfilter/nfnetlink_conntrack.h
@@ -39,8 +39,9 @@ enum ctattr_type {
CTA_TUPLE_MASTER,
CTA_NAT_SEQ_ADJ_ORIG,
CTA_NAT_SEQ_ADJ_REPLY,
- CTA_SECMARK,
+ CTA_SECMARK, /* obsolete */
CTA_ZONE,
+ CTA_SECCTX,
__CTA_MAX
};
#define CTA_MAX (__CTA_MAX - 1)
@@ -172,4 +173,11 @@ enum ctattr_help {
};
#define CTA_HELP_MAX (__CTA_HELP_MAX - 1)
+enum ctattr_secctx {
+ CTA_SECCTX_UNSPEC,
+ CTA_SECCTX_NAME,
+ __CTA_SECCTX_MAX
+};
+#define CTA_SECCTX_MAX (__CTA_SECCTX_MAX - 1)
+
#endif /* _IPCONNTRACK_NETLINK_H */
diff --git a/include/linux/netfilter/xt_SECMARK.h b/include/linux/netfilter/xt_SECMARK.h
index 6fcd3448b186..989092bd6274 100644
--- a/include/linux/netfilter/xt_SECMARK.h
+++ b/include/linux/netfilter/xt_SECMARK.h
@@ -11,18 +11,12 @@
* packets are being marked for.
*/
#define SECMARK_MODE_SEL 0x01 /* SELinux */
-#define SECMARK_SELCTX_MAX 256
-
-struct xt_secmark_target_selinux_info {
- __u32 selsid;
- char selctx[SECMARK_SELCTX_MAX];
-};
+#define SECMARK_SECCTX_MAX 256
struct xt_secmark_target_info {
__u8 mode;
- union {
- struct xt_secmark_target_selinux_info sel;
- } u;
+ __u32 secid;
+ char secctx[SECMARK_SECCTX_MAX];
};
#endif /*_XT_SECMARK_H_target */
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 508f8cf6da37..d0edf7d823ae 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -185,7 +185,7 @@ struct nfs_inode {
struct nfs4_cached_acl *nfs4_acl;
/* NFSv4 state */
struct list_head open_states;
- struct nfs_delegation *delegation;
+ struct nfs_delegation __rcu *delegation;
fmode_t delegation_state;
struct rw_semaphore rwsem;
#endif /* CONFIG_NFS_V4*/
diff --git a/include/linux/notifier.h b/include/linux/notifier.h
index b2f1a4d83550..2026f9e1ceb8 100644
--- a/include/linux/notifier.h
+++ b/include/linux/notifier.h
@@ -49,28 +49,28 @@
struct notifier_block {
int (*notifier_call)(struct notifier_block *, unsigned long, void *);
- struct notifier_block *next;
+ struct notifier_block __rcu *next;
int priority;
};
struct atomic_notifier_head {
spinlock_t lock;
- struct notifier_block *head;
+ struct notifier_block __rcu *head;
};
struct blocking_notifier_head {
struct rw_semaphore rwsem;
- struct notifier_block *head;
+ struct notifier_block __rcu *head;
};
struct raw_notifier_head {
- struct notifier_block *head;
+ struct notifier_block __rcu *head;
};
struct srcu_notifier_head {
struct mutex mutex;
struct srcu_struct srcu;
- struct notifier_block *head;
+ struct notifier_block __rcu *head;
};
#define ATOMIC_INIT_NOTIFIER_HEAD(name) do { \
diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h
index 5171639ecf0f..32fb81212fd1 100644
--- a/include/linux/oprofile.h
+++ b/include/linux/oprofile.h
@@ -15,6 +15,7 @@
#include <linux/types.h>
#include <linux/spinlock.h>
+#include <linux/init.h>
#include <asm/atomic.h>
/* Each escaped entry is prefixed by ESCAPE_CODE
@@ -185,4 +186,10 @@ int oprofile_add_data(struct op_entry *entry, unsigned long val);
int oprofile_add_data64(struct op_entry *entry, u64 val);
int oprofile_write_commit(struct op_entry *entry);
+#ifdef CONFIG_PERF_EVENTS
+int __init oprofile_perf_init(struct oprofile_operations *ops);
+void oprofile_perf_exit(void);
+char *op_name_from_perf_id(void);
+#endif /* CONFIG_PERF_EVENTS */
+
#endif /* OPROFILE_H */
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index 570fddeb0388..2615c37c8fe5 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -517,6 +517,7 @@
#define PCI_DEVICE_ID_AMD_11H_NB_DRAM 0x1302
#define PCI_DEVICE_ID_AMD_11H_NB_MISC 0x1303
#define PCI_DEVICE_ID_AMD_11H_NB_LINK 0x1304
+#define PCI_DEVICE_ID_AMD_15H_NB_MISC 0x1603
#define PCI_DEVICE_ID_AMD_LANCE 0x2000
#define PCI_DEVICE_ID_AMD_LANCE_HOME 0x2001
#define PCI_DEVICE_ID_AMD_SCSI 0x2020
diff --git a/include/linux/percpu-defs.h b/include/linux/percpu-defs.h
index ce2dc655cd1d..27ef6b190ea6 100644
--- a/include/linux/percpu-defs.h
+++ b/include/linux/percpu-defs.h
@@ -139,6 +139,15 @@
__aligned(PAGE_SIZE)
/*
+ * Declaration/definition used for per-CPU variables that must be read mostly.
+ */
+#define DECLARE_PER_CPU_READ_MOSTLY(type, name) \
+ DECLARE_PER_CPU_SECTION(type, name, "..readmostly")
+
+#define DEFINE_PER_CPU_READ_MOSTLY(type, name) \
+ DEFINE_PER_CPU_SECTION(type, name, "..readmostly")
+
+/*
* Intermodule exports for per-CPU variables. sparse forgets about
* address space across EXPORT_SYMBOL(), change EXPORT_SYMBOL() to
* noop if __CHECKER__.
diff --git a/include/linux/percpu.h b/include/linux/percpu.h
index 49466b13c5c6..0eb50832aa00 100644
--- a/include/linux/percpu.h
+++ b/include/linux/percpu.h
@@ -39,6 +39,15 @@
preempt_enable(); \
} while (0)
+#define get_cpu_ptr(var) ({ \
+ preempt_disable(); \
+ this_cpu_ptr(var); })
+
+#define put_cpu_ptr(var) do { \
+ (void)(var); \
+ preempt_enable(); \
+} while (0)
+
#ifdef CONFIG_SMP
/* minimum unit size, also is the maximum supported allocation size */
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 716f99b682c1..057bf22a8323 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -486,6 +486,8 @@ struct perf_guest_info_callbacks {
#include <linux/workqueue.h>
#include <linux/ftrace.h>
#include <linux/cpu.h>
+#include <linux/irq_work.h>
+#include <linux/jump_label_ref.h>
#include <asm/atomic.h>
#include <asm/local.h>
@@ -529,16 +531,22 @@ struct hw_perf_event {
int last_cpu;
};
struct { /* software */
- s64 remaining;
struct hrtimer hrtimer;
};
#ifdef CONFIG_HAVE_HW_BREAKPOINT
struct { /* breakpoint */
struct arch_hw_breakpoint info;
struct list_head bp_list;
+ /*
+ * Crufty hack to avoid the chicken and egg
+ * problem hw_breakpoint has with context
+ * creation and event initalization.
+ */
+ struct task_struct *bp_target;
};
#endif
};
+ int state;
local64_t prev_count;
u64 sample_period;
u64 last_period;
@@ -550,6 +558,13 @@ struct hw_perf_event {
#endif
};
+/*
+ * hw_perf_event::state flags
+ */
+#define PERF_HES_STOPPED 0x01 /* the counter is stopped */
+#define PERF_HES_UPTODATE 0x02 /* event->count up-to-date */
+#define PERF_HES_ARCH 0x04
+
struct perf_event;
/*
@@ -561,36 +576,70 @@ struct perf_event;
* struct pmu - generic performance monitoring unit
*/
struct pmu {
- int (*enable) (struct perf_event *event);
- void (*disable) (struct perf_event *event);
- int (*start) (struct perf_event *event);
- void (*stop) (struct perf_event *event);
- void (*read) (struct perf_event *event);
- void (*unthrottle) (struct perf_event *event);
+ struct list_head entry;
+
+ int * __percpu pmu_disable_count;
+ struct perf_cpu_context * __percpu pmu_cpu_context;
+ int task_ctx_nr;
+
+ /*
+ * Fully disable/enable this PMU, can be used to protect from the PMI
+ * as well as for lazy/batch writing of the MSRs.
+ */
+ void (*pmu_enable) (struct pmu *pmu); /* optional */
+ void (*pmu_disable) (struct pmu *pmu); /* optional */
/*
- * Group events scheduling is treated as a transaction, add group
- * events as a whole and perform one schedulability test. If the test
- * fails, roll back the whole group
+ * Try and initialize the event for this PMU.
+ * Should return -ENOENT when the @event doesn't match this PMU.
*/
+ int (*event_init) (struct perf_event *event);
+
+#define PERF_EF_START 0x01 /* start the counter when adding */
+#define PERF_EF_RELOAD 0x02 /* reload the counter when starting */
+#define PERF_EF_UPDATE 0x04 /* update the counter when stopping */
/*
- * Start the transaction, after this ->enable() doesn't need
- * to do schedulability tests.
+ * Adds/Removes a counter to/from the PMU, can be done inside
+ * a transaction, see the ->*_txn() methods.
*/
- void (*start_txn) (const struct pmu *pmu);
+ int (*add) (struct perf_event *event, int flags);
+ void (*del) (struct perf_event *event, int flags);
+
/*
- * If ->start_txn() disabled the ->enable() schedulability test
+ * Starts/Stops a counter present on the PMU. The PMI handler
+ * should stop the counter when perf_event_overflow() returns
+ * !0. ->start() will be used to continue.
+ */
+ void (*start) (struct perf_event *event, int flags);
+ void (*stop) (struct perf_event *event, int flags);
+
+ /*
+ * Updates the counter value of the event.
+ */
+ void (*read) (struct perf_event *event);
+
+ /*
+ * Group events scheduling is treated as a transaction, add
+ * group events as a whole and perform one schedulability test.
+ * If the test fails, roll back the whole group
+ *
+ * Start the transaction, after this ->add() doesn't need to
+ * do schedulability tests.
+ */
+ void (*start_txn) (struct pmu *pmu); /* optional */
+ /*
+ * If ->start_txn() disabled the ->add() schedulability test
* then ->commit_txn() is required to perform one. On success
* the transaction is closed. On error the transaction is kept
* open until ->cancel_txn() is called.
*/
- int (*commit_txn) (const struct pmu *pmu);
+ int (*commit_txn) (struct pmu *pmu); /* optional */
/*
- * Will cancel the transaction, assumes ->disable() is called for
- * each successfull ->enable() during the transaction.
+ * Will cancel the transaction, assumes ->del() is called
+ * for each successfull ->add() during the transaction.
*/
- void (*cancel_txn) (const struct pmu *pmu);
+ void (*cancel_txn) (struct pmu *pmu); /* optional */
};
/**
@@ -631,11 +680,6 @@ struct perf_buffer {
void *data_pages[0];
};
-struct perf_pending_entry {
- struct perf_pending_entry *next;
- void (*func)(struct perf_pending_entry *);
-};
-
struct perf_sample_data;
typedef void (*perf_overflow_handler_t)(struct perf_event *, int,
@@ -656,6 +700,7 @@ struct swevent_hlist {
#define PERF_ATTACH_CONTEXT 0x01
#define PERF_ATTACH_GROUP 0x02
+#define PERF_ATTACH_TASK 0x04
/**
* struct perf_event - performance event kernel representation:
@@ -669,7 +714,7 @@ struct perf_event {
int nr_siblings;
int group_flags;
struct perf_event *group_leader;
- const struct pmu *pmu;
+ struct pmu *pmu;
enum perf_event_active_state state;
unsigned int attach_state;
@@ -743,7 +788,7 @@ struct perf_event {
int pending_wakeup;
int pending_kill;
int pending_disable;
- struct perf_pending_entry pending;
+ struct irq_work pending;
atomic_t event_limit;
@@ -763,12 +808,19 @@ struct perf_event {
#endif /* CONFIG_PERF_EVENTS */
};
+enum perf_event_context_type {
+ task_context,
+ cpu_context,
+};
+
/**
* struct perf_event_context - event context structure
*
* Used as a container for task events and CPU events as well:
*/
struct perf_event_context {
+ enum perf_event_context_type type;
+ struct pmu *pmu;
/*
* Protect the states of the events in the list,
* nr_active, and the list:
@@ -808,6 +860,12 @@ struct perf_event_context {
struct rcu_head rcu_head;
};
+/*
+ * Number of contexts where an event can trigger:
+ * task, softirq, hardirq, nmi.
+ */
+#define PERF_NR_CONTEXTS 4
+
/**
* struct perf_event_cpu_context - per cpu event context structure
*/
@@ -815,18 +873,9 @@ struct perf_cpu_context {
struct perf_event_context ctx;
struct perf_event_context *task_ctx;
int active_oncpu;
- int max_pertask;
int exclusive;
- struct swevent_hlist *swevent_hlist;
- struct mutex hlist_mutex;
- int hlist_refcount;
-
- /*
- * Recursion avoidance:
- *
- * task, softirq, irq, nmi context
- */
- int recursion[4];
+ struct list_head rotation_list;
+ int jiffies_interval;
};
struct perf_output_handle {
@@ -842,26 +891,34 @@ struct perf_output_handle {
#ifdef CONFIG_PERF_EVENTS
-/*
- * Set by architecture code:
- */
-extern int perf_max_events;
+extern int perf_pmu_register(struct pmu *pmu);
+extern void perf_pmu_unregister(struct pmu *pmu);
+
+extern int perf_num_counters(void);
+extern const char *perf_pmu_name(void);
+extern void __perf_event_task_sched_in(struct task_struct *task);
+extern void __perf_event_task_sched_out(struct task_struct *task, struct task_struct *next);
-extern const struct pmu *hw_perf_event_init(struct perf_event *event);
+extern atomic_t perf_task_events;
+
+static inline void perf_event_task_sched_in(struct task_struct *task)
+{
+ COND_STMT(&perf_task_events, __perf_event_task_sched_in(task));
+}
+
+static inline
+void perf_event_task_sched_out(struct task_struct *task, struct task_struct *next)
+{
+ COND_STMT(&perf_task_events, __perf_event_task_sched_out(task, next));
+}
-extern void perf_event_task_sched_in(struct task_struct *task);
-extern void perf_event_task_sched_out(struct task_struct *task, struct task_struct *next);
-extern void perf_event_task_tick(struct task_struct *task);
extern int perf_event_init_task(struct task_struct *child);
extern void perf_event_exit_task(struct task_struct *child);
extern void perf_event_free_task(struct task_struct *task);
-extern void set_perf_event_pending(void);
-extern void perf_event_do_pending(void);
+extern void perf_event_delayed_put(struct task_struct *task);
extern void perf_event_print_debug(void);
-extern void __perf_disable(void);
-extern bool __perf_enable(void);
-extern void perf_disable(void);
-extern void perf_enable(void);
+extern void perf_pmu_disable(struct pmu *pmu);
+extern void perf_pmu_enable(struct pmu *pmu);
extern int perf_event_task_disable(void);
extern int perf_event_task_enable(void);
extern void perf_event_update_userpage(struct perf_event *event);
@@ -869,7 +926,7 @@ extern int perf_event_release_kernel(struct perf_event *event);
extern struct perf_event *
perf_event_create_kernel_counter(struct perf_event_attr *attr,
int cpu,
- pid_t pid,
+ struct task_struct *task,
perf_overflow_handler_t callback);
extern u64 perf_event_read_value(struct perf_event *event,
u64 *enabled, u64 *running);
@@ -920,14 +977,7 @@ extern int perf_event_overflow(struct perf_event *event, int nmi,
*/
static inline int is_software_event(struct perf_event *event)
{
- switch (event->attr.type) {
- case PERF_TYPE_SOFTWARE:
- case PERF_TYPE_TRACEPOINT:
- /* for now the breakpoint stuff also works as software event */
- case PERF_TYPE_BREAKPOINT:
- return 1;
- }
- return 0;
+ return event->pmu->task_ctx_nr == perf_sw_context;
}
extern atomic_t perf_swevent_enabled[PERF_COUNT_SW_MAX];
@@ -954,18 +1004,20 @@ static inline void perf_fetch_caller_regs(struct pt_regs *regs)
perf_arch_fetch_caller_regs(regs, CALLER_ADDR0);
}
-static inline void
+static __always_inline void
perf_sw_event(u32 event_id, u64 nr, int nmi, struct pt_regs *regs, u64 addr)
{
- if (atomic_read(&perf_swevent_enabled[event_id])) {
- struct pt_regs hot_regs;
-
- if (!regs) {
- perf_fetch_caller_regs(&hot_regs);
- regs = &hot_regs;
- }
- __perf_sw_event(event_id, nr, nmi, regs, addr);
+ struct pt_regs hot_regs;
+
+ JUMP_LABEL(&perf_swevent_enabled[event_id], have_event);
+ return;
+
+have_event:
+ if (!regs) {
+ perf_fetch_caller_regs(&hot_regs);
+ regs = &hot_regs;
}
+ __perf_sw_event(event_id, nr, nmi, regs, addr);
}
extern void perf_event_mmap(struct vm_area_struct *vma);
@@ -976,7 +1028,21 @@ extern int perf_unregister_guest_info_callbacks(struct perf_guest_info_callbacks
extern void perf_event_comm(struct task_struct *tsk);
extern void perf_event_fork(struct task_struct *tsk);
-extern struct perf_callchain_entry *perf_callchain(struct pt_regs *regs);
+/* Callchains */
+DECLARE_PER_CPU(struct perf_callchain_entry, perf_callchain_entry);
+
+extern void perf_callchain_user(struct perf_callchain_entry *entry,
+ struct pt_regs *regs);
+extern void perf_callchain_kernel(struct perf_callchain_entry *entry,
+ struct pt_regs *regs);
+
+
+static inline void
+perf_callchain_store(struct perf_callchain_entry *entry, u64 ip)
+{
+ if (entry->nr < PERF_MAX_STACK_DEPTH)
+ entry->ip[entry->nr++] = ip;
+}
extern int sysctl_perf_event_paranoid;
extern int sysctl_perf_event_mlock;
@@ -1019,21 +1085,18 @@ extern int perf_swevent_get_recursion_context(void);
extern void perf_swevent_put_recursion_context(int rctx);
extern void perf_event_enable(struct perf_event *event);
extern void perf_event_disable(struct perf_event *event);
+extern void perf_event_task_tick(void);
#else
static inline void
perf_event_task_sched_in(struct task_struct *task) { }
static inline void
perf_event_task_sched_out(struct task_struct *task,
struct task_struct *next) { }
-static inline void
-perf_event_task_tick(struct task_struct *task) { }
static inline int perf_event_init_task(struct task_struct *child) { return 0; }
static inline void perf_event_exit_task(struct task_struct *child) { }
static inline void perf_event_free_task(struct task_struct *task) { }
-static inline void perf_event_do_pending(void) { }
+static inline void perf_event_delayed_put(struct task_struct *task) { }
static inline void perf_event_print_debug(void) { }
-static inline void perf_disable(void) { }
-static inline void perf_enable(void) { }
static inline int perf_event_task_disable(void) { return -EINVAL; }
static inline int perf_event_task_enable(void) { return -EINVAL; }
@@ -1056,6 +1119,7 @@ static inline int perf_swevent_get_recursion_context(void) { return -1; }
static inline void perf_swevent_put_recursion_context(int rctx) { }
static inline void perf_event_enable(struct perf_event *event) { }
static inline void perf_event_disable(struct perf_event *event) { }
+static inline void perf_event_task_tick(void) { }
#endif
#define perf_output_put(handle, x) \
diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h
index 634b8e674ac5..a39cbed9ee17 100644
--- a/include/linux/radix-tree.h
+++ b/include/linux/radix-tree.h
@@ -47,6 +47,8 @@ static inline void *radix_tree_indirect_to_ptr(void *ptr)
{
return (void *)((unsigned long)ptr & ~RADIX_TREE_INDIRECT_PTR);
}
+#define radix_tree_indirect_to_ptr(ptr) \
+ radix_tree_indirect_to_ptr((void __force *)(ptr))
static inline int radix_tree_is_indirect_ptr(void *ptr)
{
@@ -61,7 +63,7 @@ static inline int radix_tree_is_indirect_ptr(void *ptr)
struct radix_tree_root {
unsigned int height;
gfp_t gfp_mask;
- struct radix_tree_node *rnode;
+ struct radix_tree_node __rcu *rnode;
};
#define RADIX_TREE_INIT(mask) { \
diff --git a/include/linux/rculist.h b/include/linux/rculist.h
index 4ec3b38ce9c5..f31ef61f1c65 100644
--- a/include/linux/rculist.h
+++ b/include/linux/rculist.h
@@ -10,6 +10,21 @@
#include <linux/rcupdate.h>
/*
+ * Why is there no list_empty_rcu()? Because list_empty() serves this
+ * purpose. The list_empty() function fetches the RCU-protected pointer
+ * and compares it to the address of the list head, but neither dereferences
+ * this pointer itself nor provides this pointer to the caller. Therefore,
+ * it is not necessary to use rcu_dereference(), so that list_empty() can
+ * be used anywhere you would want to use a list_empty_rcu().
+ */
+
+/*
+ * return the ->next pointer of a list_head in an rcu safe
+ * way, we must not access it directly
+ */
+#define list_next_rcu(list) (*((struct list_head __rcu **)(&(list)->next)))
+
+/*
* Insert a new entry between two known consecutive entries.
*
* This is only for internal list manipulation where we know
@@ -20,7 +35,7 @@ static inline void __list_add_rcu(struct list_head *new,
{
new->next = next;
new->prev = prev;
- rcu_assign_pointer(prev->next, new);
+ rcu_assign_pointer(list_next_rcu(prev), new);
next->prev = new;
}
@@ -138,7 +153,7 @@ static inline void list_replace_rcu(struct list_head *old,
{
new->next = old->next;
new->prev = old->prev;
- rcu_assign_pointer(new->prev->next, new);
+ rcu_assign_pointer(list_next_rcu(new->prev), new);
new->next->prev = new;
old->prev = LIST_POISON2;
}
@@ -193,7 +208,7 @@ static inline void list_splice_init_rcu(struct list_head *list,
*/
last->next = at;
- rcu_assign_pointer(head->next, first);
+ rcu_assign_pointer(list_next_rcu(head), first);
first->prev = head;
at->prev = last;
}
@@ -208,7 +223,9 @@ static inline void list_splice_init_rcu(struct list_head *list,
* primitives such as list_add_rcu() as long as it's guarded by rcu_read_lock().
*/
#define list_entry_rcu(ptr, type, member) \
- container_of(rcu_dereference_raw(ptr), type, member)
+ ({typeof (*ptr) __rcu *__ptr = (typeof (*ptr) __rcu __force *)ptr; \
+ container_of((typeof(ptr))rcu_dereference_raw(__ptr), type, member); \
+ })
/**
* list_first_entry_rcu - get the first element from a list
@@ -225,9 +242,9 @@ static inline void list_splice_init_rcu(struct list_head *list,
list_entry_rcu((ptr)->next, type, member)
#define __list_for_each_rcu(pos, head) \
- for (pos = rcu_dereference_raw((head)->next); \
+ for (pos = rcu_dereference_raw(list_next_rcu(head)); \
pos != (head); \
- pos = rcu_dereference_raw(pos->next))
+ pos = rcu_dereference_raw(list_next_rcu((pos)))
/**
* list_for_each_entry_rcu - iterate over rcu list of given type
@@ -257,9 +274,9 @@ static inline void list_splice_init_rcu(struct list_head *list,
* as long as the traversal is guarded by rcu_read_lock().
*/
#define list_for_each_continue_rcu(pos, head) \
- for ((pos) = rcu_dereference_raw((pos)->next); \
+ for ((pos) = rcu_dereference_raw(list_next_rcu(pos)); \
prefetch((pos)->next), (pos) != (head); \
- (pos) = rcu_dereference_raw((pos)->next))
+ (pos) = rcu_dereference_raw(list_next_rcu(pos)))
/**
* list_for_each_entry_continue_rcu - continue iteration over list of given type
@@ -314,12 +331,19 @@ static inline void hlist_replace_rcu(struct hlist_node *old,
new->next = next;
new->pprev = old->pprev;
- rcu_assign_pointer(*new->pprev, new);
+ rcu_assign_pointer(*(struct hlist_node __rcu **)new->pprev, new);
if (next)
new->next->pprev = &new->next;
old->pprev = LIST_POISON2;
}
+/*
+ * return the first or the next element in an RCU protected hlist
+ */
+#define hlist_first_rcu(head) (*((struct hlist_node __rcu **)(&(head)->first)))
+#define hlist_next_rcu(node) (*((struct hlist_node __rcu **)(&(node)->next)))
+#define hlist_pprev_rcu(node) (*((struct hlist_node __rcu **)((node)->pprev)))
+
/**
* hlist_add_head_rcu
* @n: the element to add to the hash list.
@@ -346,7 +370,7 @@ static inline void hlist_add_head_rcu(struct hlist_node *n,
n->next = first;
n->pprev = &h->first;
- rcu_assign_pointer(h->first, n);
+ rcu_assign_pointer(hlist_first_rcu(h), n);
if (first)
first->pprev = &n->next;
}
@@ -374,7 +398,7 @@ static inline void hlist_add_before_rcu(struct hlist_node *n,
{
n->pprev = next->pprev;
n->next = next;
- rcu_assign_pointer(*(n->pprev), n);
+ rcu_assign_pointer(hlist_pprev_rcu(n), n);
next->pprev = &n->next;
}
@@ -401,15 +425,15 @@ static inline void hlist_add_after_rcu(struct hlist_node *prev,
{
n->next = prev->next;
n->pprev = &prev->next;
- rcu_assign_pointer(prev->next, n);
+ rcu_assign_pointer(hlist_next_rcu(prev), n);
if (n->next)
n->next->pprev = &n->next;
}
-#define __hlist_for_each_rcu(pos, head) \
- for (pos = rcu_dereference((head)->first); \
- pos && ({ prefetch(pos->next); 1; }); \
- pos = rcu_dereference(pos->next))
+#define __hlist_for_each_rcu(pos, head) \
+ for (pos = rcu_dereference(hlist_first_rcu(head)); \
+ pos && ({ prefetch(pos->next); 1; }); \
+ pos = rcu_dereference(hlist_next_rcu(pos)))
/**
* hlist_for_each_entry_rcu - iterate over rcu list of given type
@@ -422,11 +446,11 @@ static inline void hlist_add_after_rcu(struct hlist_node *prev,
* the _rcu list-mutation primitives such as hlist_add_head_rcu()
* as long as the traversal is guarded by rcu_read_lock().
*/
-#define hlist_for_each_entry_rcu(tpos, pos, head, member) \
- for (pos = rcu_dereference_raw((head)->first); \
+#define hlist_for_each_entry_rcu(tpos, pos, head, member) \
+ for (pos = rcu_dereference_raw(hlist_first_rcu(head)); \
pos && ({ prefetch(pos->next); 1; }) && \
({ tpos = hlist_entry(pos, typeof(*tpos), member); 1; }); \
- pos = rcu_dereference_raw(pos->next))
+ pos = rcu_dereference_raw(hlist_next_rcu(pos)))
/**
* hlist_for_each_entry_rcu_bh - iterate over rcu list of given type
diff --git a/include/linux/rculist_nulls.h b/include/linux/rculist_nulls.h
index b70ffe53cb9f..2ae13714828b 100644
--- a/include/linux/rculist_nulls.h
+++ b/include/linux/rculist_nulls.h
@@ -37,6 +37,12 @@ static inline void hlist_nulls_del_init_rcu(struct hlist_nulls_node *n)
}
}
+#define hlist_nulls_first_rcu(head) \
+ (*((struct hlist_nulls_node __rcu __force **)&(head)->first))
+
+#define hlist_nulls_next_rcu(node) \
+ (*((struct hlist_nulls_node __rcu __force **)&(node)->next))
+
/**
* hlist_nulls_del_rcu - deletes entry from hash list without re-initialization
* @n: the element to delete from the hash list.
@@ -88,7 +94,7 @@ static inline void hlist_nulls_add_head_rcu(struct hlist_nulls_node *n,
n->next = first;
n->pprev = &h->first;
- rcu_assign_pointer(h->first, n);
+ rcu_assign_pointer(hlist_nulls_first_rcu(h), n);
if (!is_a_nulls(first))
first->pprev = &n->next;
}
@@ -100,11 +106,11 @@ static inline void hlist_nulls_add_head_rcu(struct hlist_nulls_node *n,
* @member: the name of the hlist_nulls_node within the struct.
*
*/
-#define hlist_nulls_for_each_entry_rcu(tpos, pos, head, member) \
- for (pos = rcu_dereference_raw((head)->first); \
- (!is_a_nulls(pos)) && \
+#define hlist_nulls_for_each_entry_rcu(tpos, pos, head, member) \
+ for (pos = rcu_dereference_raw(hlist_nulls_first_rcu(head)); \
+ (!is_a_nulls(pos)) && \
({ tpos = hlist_nulls_entry(pos, typeof(*tpos), member); 1; }); \
- pos = rcu_dereference_raw(pos->next))
+ pos = rcu_dereference_raw(hlist_nulls_next_rcu(pos)))
#endif
#endif
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 83af1f8d8b74..03cda7bed985 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -41,11 +41,15 @@
#include <linux/lockdep.h>
#include <linux/completion.h>
#include <linux/debugobjects.h>
+#include <linux/compiler.h>
#ifdef CONFIG_RCU_TORTURE_TEST
extern int rcutorture_runnable; /* for sysctl */
#endif /* #ifdef CONFIG_RCU_TORTURE_TEST */
+#define ULONG_CMP_GE(a, b) (ULONG_MAX / 2 >= (a) - (b))
+#define ULONG_CMP_LT(a, b) (ULONG_MAX / 2 < (a) - (b))
+
/**
* struct rcu_head - callback structure for use with RCU
* @next: next update requests in a list
@@ -57,29 +61,94 @@ struct rcu_head {
};
/* Exported common interfaces */
-extern void rcu_barrier(void);
+extern void call_rcu_sched(struct rcu_head *head,
+ void (*func)(struct rcu_head *rcu));
+extern void synchronize_sched(void);
extern void rcu_barrier_bh(void);
extern void rcu_barrier_sched(void);
extern void synchronize_sched_expedited(void);
extern int sched_expedited_torture_stats(char *page);
+static inline void __rcu_read_lock_bh(void)
+{
+ local_bh_disable();
+}
+
+static inline void __rcu_read_unlock_bh(void)
+{
+ local_bh_enable();
+}
+
+#ifdef CONFIG_PREEMPT_RCU
+
+extern void __rcu_read_lock(void);
+extern void __rcu_read_unlock(void);
+void synchronize_rcu(void);
+
+/*
+ * Defined as a macro as it is a very low level header included from
+ * areas that don't even know about current. This gives the rcu_read_lock()
+ * nesting depth, but makes sense only if CONFIG_PREEMPT_RCU -- in other
+ * types of kernel builds, the rcu_read_lock() nesting depth is unknowable.
+ */
+#define rcu_preempt_depth() (current->rcu_read_lock_nesting)
+
+#else /* #ifdef CONFIG_PREEMPT_RCU */
+
+static inline void __rcu_read_lock(void)
+{
+ preempt_disable();
+}
+
+static inline void __rcu_read_unlock(void)
+{
+ preempt_enable();
+}
+
+static inline void synchronize_rcu(void)
+{
+ synchronize_sched();
+}
+
+static inline int rcu_preempt_depth(void)
+{
+ return 0;
+}
+
+#endif /* #else #ifdef CONFIG_PREEMPT_RCU */
+
/* Internal to kernel */
extern void rcu_init(void);
+extern void rcu_sched_qs(int cpu);
+extern void rcu_bh_qs(int cpu);
+extern void rcu_check_callbacks(int cpu, int user);
+struct notifier_block;
+
+#ifdef CONFIG_NO_HZ
+
+extern void rcu_enter_nohz(void);
+extern void rcu_exit_nohz(void);
+
+#else /* #ifdef CONFIG_NO_HZ */
+
+static inline void rcu_enter_nohz(void)
+{
+}
+
+static inline void rcu_exit_nohz(void)
+{
+}
+
+#endif /* #else #ifdef CONFIG_NO_HZ */
#if defined(CONFIG_TREE_RCU) || defined(CONFIG_TREE_PREEMPT_RCU)
#include <linux/rcutree.h>
-#elif defined(CONFIG_TINY_RCU)
+#elif defined(CONFIG_TINY_RCU) || defined(CONFIG_TINY_PREEMPT_RCU)
#include <linux/rcutiny.h>
#else
#error "Unknown RCU implementation specified to kernel configuration"
#endif
-#define RCU_HEAD_INIT { .next = NULL, .func = NULL }
-#define RCU_HEAD(head) struct rcu_head head = RCU_HEAD_INIT
-#define INIT_RCU_HEAD(ptr) do { \
- (ptr)->next = NULL; (ptr)->func = NULL; \
-} while (0)
-
/*
* init_rcu_head_on_stack()/destroy_rcu_head_on_stack() are needed for dynamic
* initialization and destruction of rcu_head on the stack. rcu_head structures
@@ -120,14 +189,15 @@ extern struct lockdep_map rcu_sched_lock_map;
extern int debug_lockdep_rcu_enabled(void);
/**
- * rcu_read_lock_held - might we be in RCU read-side critical section?
+ * rcu_read_lock_held() - might we be in RCU read-side critical section?
*
* If CONFIG_DEBUG_LOCK_ALLOC is selected, returns nonzero iff in an RCU
* read-side critical section. In absence of CONFIG_DEBUG_LOCK_ALLOC,
* this assumes we are in an RCU read-side critical section unless it can
- * prove otherwise.
+ * prove otherwise. This is useful for debug checks in functions that
+ * require that they be called within an RCU read-side critical section.
*
- * Check debug_lockdep_rcu_enabled() to prevent false positives during boot
+ * Checks debug_lockdep_rcu_enabled() to prevent false positives during boot
* and while lockdep is disabled.
*/
static inline int rcu_read_lock_held(void)
@@ -144,14 +214,16 @@ static inline int rcu_read_lock_held(void)
extern int rcu_read_lock_bh_held(void);
/**
- * rcu_read_lock_sched_held - might we be in RCU-sched read-side critical section?
+ * rcu_read_lock_sched_held() - might we be in RCU-sched read-side critical section?
*
* If CONFIG_DEBUG_LOCK_ALLOC is selected, returns nonzero iff in an
* RCU-sched read-side critical section. In absence of
* CONFIG_DEBUG_LOCK_ALLOC, this assumes we are in an RCU-sched read-side
* critical section unless it can prove otherwise. Note that disabling
* of preemption (including disabling irqs) counts as an RCU-sched
- * read-side critical section.
+ * read-side critical section. This is useful for debug checks in functions
+ * that required that they be called within an RCU-sched read-side
+ * critical section.
*
* Check debug_lockdep_rcu_enabled() to prevent false positives during boot
* and while lockdep is disabled.
@@ -211,7 +283,11 @@ static inline int rcu_read_lock_sched_held(void)
extern int rcu_my_thread_group_empty(void);
-#define __do_rcu_dereference_check(c) \
+/**
+ * rcu_lockdep_assert - emit lockdep splat if specified condition not met
+ * @c: condition to check
+ */
+#define rcu_lockdep_assert(c) \
do { \
static bool __warned; \
if (debug_lockdep_rcu_enabled() && !__warned && !(c)) { \
@@ -220,41 +296,163 @@ extern int rcu_my_thread_group_empty(void);
} \
} while (0)
+#else /* #ifdef CONFIG_PROVE_RCU */
+
+#define rcu_lockdep_assert(c) do { } while (0)
+
+#endif /* #else #ifdef CONFIG_PROVE_RCU */
+
+/*
+ * Helper functions for rcu_dereference_check(), rcu_dereference_protected()
+ * and rcu_assign_pointer(). Some of these could be folded into their
+ * callers, but they are left separate in order to ease introduction of
+ * multiple flavors of pointers to match the multiple flavors of RCU
+ * (e.g., __rcu_bh, * __rcu_sched, and __srcu), should this make sense in
+ * the future.
+ */
+
+#ifdef __CHECKER__
+#define rcu_dereference_sparse(p, space) \
+ ((void)(((typeof(*p) space *)p) == p))
+#else /* #ifdef __CHECKER__ */
+#define rcu_dereference_sparse(p, space)
+#endif /* #else #ifdef __CHECKER__ */
+
+#define __rcu_access_pointer(p, space) \
+ ({ \
+ typeof(*p) *_________p1 = (typeof(*p)*__force )ACCESS_ONCE(p); \
+ rcu_dereference_sparse(p, space); \
+ ((typeof(*p) __force __kernel *)(_________p1)); \
+ })
+#define __rcu_dereference_check(p, c, space) \
+ ({ \
+ typeof(*p) *_________p1 = (typeof(*p)*__force )ACCESS_ONCE(p); \
+ rcu_lockdep_assert(c); \
+ rcu_dereference_sparse(p, space); \
+ smp_read_barrier_depends(); \
+ ((typeof(*p) __force __kernel *)(_________p1)); \
+ })
+#define __rcu_dereference_protected(p, c, space) \
+ ({ \
+ rcu_lockdep_assert(c); \
+ rcu_dereference_sparse(p, space); \
+ ((typeof(*p) __force __kernel *)(p)); \
+ })
+
+#define __rcu_dereference_index_check(p, c) \
+ ({ \
+ typeof(p) _________p1 = ACCESS_ONCE(p); \
+ rcu_lockdep_assert(c); \
+ smp_read_barrier_depends(); \
+ (_________p1); \
+ })
+#define __rcu_assign_pointer(p, v, space) \
+ ({ \
+ if (!__builtin_constant_p(v) || \
+ ((v) != NULL)) \
+ smp_wmb(); \
+ (p) = (typeof(*v) __force space *)(v); \
+ })
+
+
+/**
+ * rcu_access_pointer() - fetch RCU pointer with no dereferencing
+ * @p: The pointer to read
+ *
+ * Return the value of the specified RCU-protected pointer, but omit the
+ * smp_read_barrier_depends() and keep the ACCESS_ONCE(). This is useful
+ * when the value of this pointer is accessed, but the pointer is not
+ * dereferenced, for example, when testing an RCU-protected pointer against
+ * NULL. Although rcu_access_pointer() may also be used in cases where
+ * update-side locks prevent the value of the pointer from changing, you
+ * should instead use rcu_dereference_protected() for this use case.
+ */
+#define rcu_access_pointer(p) __rcu_access_pointer((p), __rcu)
+
/**
- * rcu_dereference_check - rcu_dereference with debug checking
+ * rcu_dereference_check() - rcu_dereference with debug checking
* @p: The pointer to read, prior to dereferencing
* @c: The conditions under which the dereference will take place
*
* Do an rcu_dereference(), but check that the conditions under which the
- * dereference will take place are correct. Typically the conditions indicate
- * the various locking conditions that should be held at that point. The check
- * should return true if the conditions are satisfied.
+ * dereference will take place are correct. Typically the conditions
+ * indicate the various locking conditions that should be held at that
+ * point. The check should return true if the conditions are satisfied.
+ * An implicit check for being in an RCU read-side critical section
+ * (rcu_read_lock()) is included.
*
* For example:
*
- * bar = rcu_dereference_check(foo->bar, rcu_read_lock_held() ||
- * lockdep_is_held(&foo->lock));
+ * bar = rcu_dereference_check(foo->bar, lockdep_is_held(&foo->lock));
*
* could be used to indicate to lockdep that foo->bar may only be dereferenced
- * if either the RCU read lock is held, or that the lock required to replace
+ * if either rcu_read_lock() is held, or that the lock required to replace
* the bar struct at foo->bar is held.
*
* Note that the list of conditions may also include indications of when a lock
* need not be held, for example during initialisation or destruction of the
* target struct:
*
- * bar = rcu_dereference_check(foo->bar, rcu_read_lock_held() ||
- * lockdep_is_held(&foo->lock) ||
+ * bar = rcu_dereference_check(foo->bar, lockdep_is_held(&foo->lock) ||
* atomic_read(&foo->usage) == 0);
+ *
+ * Inserts memory barriers on architectures that require them
+ * (currently only the Alpha), prevents the compiler from refetching
+ * (and from merging fetches), and, more importantly, documents exactly
+ * which pointers are protected by RCU and checks that the pointer is
+ * annotated as __rcu.
*/
#define rcu_dereference_check(p, c) \
- ({ \
- __do_rcu_dereference_check(c); \
- rcu_dereference_raw(p); \
- })
+ __rcu_dereference_check((p), rcu_read_lock_held() || (c), __rcu)
+
+/**
+ * rcu_dereference_bh_check() - rcu_dereference_bh with debug checking
+ * @p: The pointer to read, prior to dereferencing
+ * @c: The conditions under which the dereference will take place
+ *
+ * This is the RCU-bh counterpart to rcu_dereference_check().
+ */
+#define rcu_dereference_bh_check(p, c) \
+ __rcu_dereference_check((p), rcu_read_lock_bh_held() || (c), __rcu)
/**
- * rcu_dereference_protected - fetch RCU pointer when updates prevented
+ * rcu_dereference_sched_check() - rcu_dereference_sched with debug checking
+ * @p: The pointer to read, prior to dereferencing
+ * @c: The conditions under which the dereference will take place
+ *
+ * This is the RCU-sched counterpart to rcu_dereference_check().
+ */
+#define rcu_dereference_sched_check(p, c) \
+ __rcu_dereference_check((p), rcu_read_lock_sched_held() || (c), \
+ __rcu)
+
+#define rcu_dereference_raw(p) rcu_dereference_check(p, 1) /*@@@ needed? @@@*/
+
+/**
+ * rcu_dereference_index_check() - rcu_dereference for indices with debug checking
+ * @p: The pointer to read, prior to dereferencing
+ * @c: The conditions under which the dereference will take place
+ *
+ * Similar to rcu_dereference_check(), but omits the sparse checking.
+ * This allows rcu_dereference_index_check() to be used on integers,
+ * which can then be used as array indices. Attempting to use
+ * rcu_dereference_check() on an integer will give compiler warnings
+ * because the sparse address-space mechanism relies on dereferencing
+ * the RCU-protected pointer. Dereferencing integers is not something
+ * that even gcc will put up with.
+ *
+ * Note that this function does not implicitly check for RCU read-side
+ * critical sections. If this function gains lots of uses, it might
+ * make sense to provide versions for each flavor of RCU, but it does
+ * not make sense as of early 2010.
+ */
+#define rcu_dereference_index_check(p, c) \
+ __rcu_dereference_index_check((p), (c))
+
+/**
+ * rcu_dereference_protected() - fetch RCU pointer when updates prevented
+ * @p: The pointer to read, prior to dereferencing
+ * @c: The conditions under which the dereference will take place
*
* Return the value of the specified RCU-protected pointer, but omit
* both the smp_read_barrier_depends() and the ACCESS_ONCE(). This
@@ -263,35 +461,61 @@ extern int rcu_my_thread_group_empty(void);
* prevent the compiler from repeating this reference or combining it
* with other references, so it should not be used without protection
* of appropriate locks.
+ *
+ * This function is only for update-side use. Using this function
+ * when protected only by rcu_read_lock() will result in infrequent
+ * but very ugly failures.
*/
#define rcu_dereference_protected(p, c) \
- ({ \
- __do_rcu_dereference_check(c); \
- (p); \
- })
+ __rcu_dereference_protected((p), (c), __rcu)
-#else /* #ifdef CONFIG_PROVE_RCU */
+/**
+ * rcu_dereference_bh_protected() - fetch RCU-bh pointer when updates prevented
+ * @p: The pointer to read, prior to dereferencing
+ * @c: The conditions under which the dereference will take place
+ *
+ * This is the RCU-bh counterpart to rcu_dereference_protected().
+ */
+#define rcu_dereference_bh_protected(p, c) \
+ __rcu_dereference_protected((p), (c), __rcu)
-#define rcu_dereference_check(p, c) rcu_dereference_raw(p)
-#define rcu_dereference_protected(p, c) (p)
+/**
+ * rcu_dereference_sched_protected() - fetch RCU-sched pointer when updates prevented
+ * @p: The pointer to read, prior to dereferencing
+ * @c: The conditions under which the dereference will take place
+ *
+ * This is the RCU-sched counterpart to rcu_dereference_protected().
+ */
+#define rcu_dereference_sched_protected(p, c) \
+ __rcu_dereference_protected((p), (c), __rcu)
-#endif /* #else #ifdef CONFIG_PROVE_RCU */
/**
- * rcu_access_pointer - fetch RCU pointer with no dereferencing
+ * rcu_dereference() - fetch RCU-protected pointer for dereferencing
+ * @p: The pointer to read, prior to dereferencing
*
- * Return the value of the specified RCU-protected pointer, but omit the
- * smp_read_barrier_depends() and keep the ACCESS_ONCE(). This is useful
- * when the value of this pointer is accessed, but the pointer is not
- * dereferenced, for example, when testing an RCU-protected pointer against
- * NULL. This may also be used in cases where update-side locks prevent
- * the value of the pointer from changing, but rcu_dereference_protected()
- * is a lighter-weight primitive for this use case.
+ * This is a simple wrapper around rcu_dereference_check().
+ */
+#define rcu_dereference(p) rcu_dereference_check(p, 0)
+
+/**
+ * rcu_dereference_bh() - fetch an RCU-bh-protected pointer for dereferencing
+ * @p: The pointer to read, prior to dereferencing
+ *
+ * Makes rcu_dereference_check() do the dirty work.
+ */
+#define rcu_dereference_bh(p) rcu_dereference_bh_check(p, 0)
+
+/**
+ * rcu_dereference_sched() - fetch RCU-sched-protected pointer for dereferencing
+ * @p: The pointer to read, prior to dereferencing
+ *
+ * Makes rcu_dereference_check() do the dirty work.
*/
-#define rcu_access_pointer(p) ACCESS_ONCE(p)
+#define rcu_dereference_sched(p) rcu_dereference_sched_check(p, 0)
/**
- * rcu_read_lock - mark the beginning of an RCU read-side critical section.
+ * rcu_read_lock() - mark the beginning of an RCU read-side critical section
*
* When synchronize_rcu() is invoked on one CPU while other CPUs
* are within RCU read-side critical sections, then the
@@ -302,7 +526,7 @@ extern int rcu_my_thread_group_empty(void);
* until after the all the other CPUs exit their critical sections.
*
* Note, however, that RCU callbacks are permitted to run concurrently
- * with RCU read-side critical sections. One way that this can happen
+ * with new RCU read-side critical sections. One way that this can happen
* is via the following sequence of events: (1) CPU 0 enters an RCU
* read-side critical section, (2) CPU 1 invokes call_rcu() to register
* an RCU callback, (3) CPU 0 exits the RCU read-side critical section,
@@ -317,7 +541,20 @@ extern int rcu_my_thread_group_empty(void);
* will be deferred until the outermost RCU read-side critical section
* completes.
*
- * It is illegal to block while in an RCU read-side critical section.
+ * You can avoid reading and understanding the next paragraph by
+ * following this rule: don't put anything in an rcu_read_lock() RCU
+ * read-side critical section that would block in a !PREEMPT kernel.
+ * But if you want the full story, read on!
+ *
+ * In non-preemptible RCU implementations (TREE_RCU and TINY_RCU), it
+ * is illegal to block while in an RCU read-side critical section. In
+ * preemptible RCU implementations (TREE_PREEMPT_RCU and TINY_PREEMPT_RCU)
+ * in CONFIG_PREEMPT kernel builds, RCU read-side critical sections may
+ * be preempted, but explicit blocking is illegal. Finally, in preemptible
+ * RCU implementations in real-time (CONFIG_PREEMPT_RT) kernel builds,
+ * RCU read-side critical sections may be preempted and they may also
+ * block, but only when acquiring spinlocks that are subject to priority
+ * inheritance.
*/
static inline void rcu_read_lock(void)
{
@@ -337,7 +574,7 @@ static inline void rcu_read_lock(void)
*/
/**
- * rcu_read_unlock - marks the end of an RCU read-side critical section.
+ * rcu_read_unlock() - marks the end of an RCU read-side critical section.
*
* See rcu_read_lock() for more information.
*/
@@ -349,15 +586,16 @@ static inline void rcu_read_unlock(void)
}
/**
- * rcu_read_lock_bh - mark the beginning of a softirq-only RCU critical section
+ * rcu_read_lock_bh() - mark the beginning of an RCU-bh critical section
*
* This is equivalent of rcu_read_lock(), but to be used when updates
- * are being done using call_rcu_bh(). Since call_rcu_bh() callbacks
- * consider completion of a softirq handler to be a quiescent state,
- * a process in RCU read-side critical section must be protected by
- * disabling softirqs. Read-side critical sections in interrupt context
- * can use just rcu_read_lock().
- *
+ * are being done using call_rcu_bh() or synchronize_rcu_bh(). Since
+ * both call_rcu_bh() and synchronize_rcu_bh() consider completion of a
+ * softirq handler to be a quiescent state, a process in RCU read-side
+ * critical section must be protected by disabling softirqs. Read-side
+ * critical sections in interrupt context can use just rcu_read_lock(),
+ * though this should at least be commented to avoid confusing people
+ * reading the code.
*/
static inline void rcu_read_lock_bh(void)
{
@@ -379,13 +617,12 @@ static inline void rcu_read_unlock_bh(void)
}
/**
- * rcu_read_lock_sched - mark the beginning of a RCU-classic critical section
+ * rcu_read_lock_sched() - mark the beginning of a RCU-sched critical section
*
- * Should be used with either
- * - synchronize_sched()
- * or
- * - call_rcu_sched() and rcu_barrier_sched()
- * on the write-side to insure proper synchronization.
+ * This is equivalent of rcu_read_lock(), but to be used when updates
+ * are being done using call_rcu_sched() or synchronize_rcu_sched().
+ * Read-side critical sections can also be introduced by anything that
+ * disables preemption, including local_irq_disable() and friends.
*/
static inline void rcu_read_lock_sched(void)
{
@@ -420,54 +657,14 @@ static inline notrace void rcu_read_unlock_sched_notrace(void)
preempt_enable_notrace();
}
-
/**
- * rcu_dereference_raw - fetch an RCU-protected pointer
+ * rcu_assign_pointer() - assign to RCU-protected pointer
+ * @p: pointer to assign to
+ * @v: value to assign (publish)
*
- * The caller must be within some flavor of RCU read-side critical
- * section, or must be otherwise preventing the pointer from changing,
- * for example, by holding an appropriate lock. This pointer may later
- * be safely dereferenced. It is the caller's responsibility to have
- * done the right thing, as this primitive does no checking of any kind.
- *
- * Inserts memory barriers on architectures that require them
- * (currently only the Alpha), and, more importantly, documents
- * exactly which pointers are protected by RCU.
- */
-#define rcu_dereference_raw(p) ({ \
- typeof(p) _________p1 = ACCESS_ONCE(p); \
- smp_read_barrier_depends(); \
- (_________p1); \
- })
-
-/**
- * rcu_dereference - fetch an RCU-protected pointer, checking for RCU
- *
- * Makes rcu_dereference_check() do the dirty work.
- */
-#define rcu_dereference(p) \
- rcu_dereference_check(p, rcu_read_lock_held())
-
-/**
- * rcu_dereference_bh - fetch an RCU-protected pointer, checking for RCU-bh
- *
- * Makes rcu_dereference_check() do the dirty work.
- */
-#define rcu_dereference_bh(p) \
- rcu_dereference_check(p, rcu_read_lock_bh_held() || irqs_disabled())
-
-/**
- * rcu_dereference_sched - fetch RCU-protected pointer, checking for RCU-sched
- *
- * Makes rcu_dereference_check() do the dirty work.
- */
-#define rcu_dereference_sched(p) \
- rcu_dereference_check(p, rcu_read_lock_sched_held())
-
-/**
- * rcu_assign_pointer - assign (publicize) a pointer to a newly
- * initialized structure that will be dereferenced by RCU read-side
- * critical sections. Returns the value assigned.
+ * Assigns the specified value to the specified RCU-protected
+ * pointer, ensuring that any concurrent RCU readers will see
+ * any prior initialization. Returns the value assigned.
*
* Inserts memory barriers on architectures that require them
* (pretty much all of them other than x86), and also prevents
@@ -476,14 +673,17 @@ static inline notrace void rcu_read_unlock_sched_notrace(void)
* call documents which pointers will be dereferenced by RCU read-side
* code.
*/
-
#define rcu_assign_pointer(p, v) \
- ({ \
- if (!__builtin_constant_p(v) || \
- ((v) != NULL)) \
- smp_wmb(); \
- (p) = (v); \
- })
+ __rcu_assign_pointer((p), (v), __rcu)
+
+/**
+ * RCU_INIT_POINTER() - initialize an RCU protected pointer
+ *
+ * Initialize an RCU-protected pointer in such a way to avoid RCU-lockdep
+ * splats.
+ */
+#define RCU_INIT_POINTER(p, v) \
+ p = (typeof(*v) __force __rcu *)(v)
/* Infrastructure to implement the synchronize_() primitives. */
@@ -494,26 +694,37 @@ struct rcu_synchronize {
extern void wakeme_after_rcu(struct rcu_head *head);
+#ifdef CONFIG_PREEMPT_RCU
+
/**
- * call_rcu - Queue an RCU callback for invocation after a grace period.
+ * call_rcu() - Queue an RCU callback for invocation after a grace period.
* @head: structure to be used for queueing the RCU updates.
- * @func: actual update function to be invoked after the grace period
+ * @func: actual callback function to be invoked after the grace period
*
- * The update function will be invoked some time after a full grace
- * period elapses, in other words after all currently executing RCU
- * read-side critical sections have completed. RCU read-side critical
+ * The callback function will be invoked some time after a full grace
+ * period elapses, in other words after all pre-existing RCU read-side
+ * critical sections have completed. However, the callback function
+ * might well execute concurrently with RCU read-side critical sections
+ * that started after call_rcu() was invoked. RCU read-side critical
* sections are delimited by rcu_read_lock() and rcu_read_unlock(),
* and may be nested.
*/
extern void call_rcu(struct rcu_head *head,
void (*func)(struct rcu_head *head));
+#else /* #ifdef CONFIG_PREEMPT_RCU */
+
+/* In classic RCU, call_rcu() is just call_rcu_sched(). */
+#define call_rcu call_rcu_sched
+
+#endif /* #else #ifdef CONFIG_PREEMPT_RCU */
+
/**
- * call_rcu_bh - Queue an RCU for invocation after a quicker grace period.
+ * call_rcu_bh() - Queue an RCU for invocation after a quicker grace period.
* @head: structure to be used for queueing the RCU updates.
- * @func: actual update function to be invoked after the grace period
+ * @func: actual callback function to be invoked after the grace period
*
- * The update function will be invoked some time after a full grace
+ * The callback function will be invoked some time after a full grace
* period elapses, in other words after all currently executing RCU
* read-side critical sections have completed. call_rcu_bh() assumes
* that the read-side critical sections end on completion of a softirq
@@ -566,37 +777,4 @@ static inline void debug_rcu_head_unqueue(struct rcu_head *head)
}
#endif /* #else !CONFIG_DEBUG_OBJECTS_RCU_HEAD */
-#ifndef CONFIG_PROVE_RCU
-#define __do_rcu_dereference_check(c) do { } while (0)
-#endif /* #ifdef CONFIG_PROVE_RCU */
-
-#define __rcu_dereference_index_check(p, c) \
- ({ \
- typeof(p) _________p1 = ACCESS_ONCE(p); \
- __do_rcu_dereference_check(c); \
- smp_read_barrier_depends(); \
- (_________p1); \
- })
-
-/**
- * rcu_dereference_index_check() - rcu_dereference for indices with debug checking
- * @p: The pointer to read, prior to dereferencing
- * @c: The conditions under which the dereference will take place
- *
- * Similar to rcu_dereference_check(), but omits the sparse checking.
- * This allows rcu_dereference_index_check() to be used on integers,
- * which can then be used as array indices. Attempting to use
- * rcu_dereference_check() on an integer will give compiler warnings
- * because the sparse address-space mechanism relies on dereferencing
- * the RCU-protected pointer. Dereferencing integers is not something
- * that even gcc will put up with.
- *
- * Note that this function does not implicitly check for RCU read-side
- * critical sections. If this function gains lots of uses, it might
- * make sense to provide versions for each flavor of RCU, but it does
- * not make sense as of early 2010.
- */
-#define rcu_dereference_index_check(p, c) \
- __rcu_dereference_index_check((p), (c))
-
#endif /* __LINUX_RCUPDATE_H */
diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h
index e2e893144a84..13877cb93a60 100644
--- a/include/linux/rcutiny.h
+++ b/include/linux/rcutiny.h
@@ -27,103 +27,101 @@
#include <linux/cache.h>
-void rcu_sched_qs(int cpu);
-void rcu_bh_qs(int cpu);
-static inline void rcu_note_context_switch(int cpu)
-{
- rcu_sched_qs(cpu);
-}
+#define rcu_init_sched() do { } while (0)
-#define __rcu_read_lock() preempt_disable()
-#define __rcu_read_unlock() preempt_enable()
-#define __rcu_read_lock_bh() local_bh_disable()
-#define __rcu_read_unlock_bh() local_bh_enable()
-#define call_rcu_sched call_rcu
+#ifdef CONFIG_TINY_RCU
-#define rcu_init_sched() do { } while (0)
-extern void rcu_check_callbacks(int cpu, int user);
+static inline void synchronize_rcu_expedited(void)
+{
+ synchronize_sched(); /* Only one CPU, so pretty fast anyway!!! */
+}
-static inline int rcu_needs_cpu(int cpu)
+static inline void rcu_barrier(void)
{
- return 0;
+ rcu_barrier_sched(); /* Only one CPU, so only one list of callbacks! */
}
-/*
- * Return the number of grace periods.
- */
-static inline long rcu_batches_completed(void)
+#else /* #ifdef CONFIG_TINY_RCU */
+
+void rcu_barrier(void);
+void synchronize_rcu_expedited(void);
+
+#endif /* #else #ifdef CONFIG_TINY_RCU */
+
+static inline void synchronize_rcu_bh(void)
{
- return 0;
+ synchronize_sched();
}
-/*
- * Return the number of bottom-half grace periods.
- */
-static inline long rcu_batches_completed_bh(void)
+static inline void synchronize_rcu_bh_expedited(void)
{
- return 0;
+ synchronize_sched();
}
-static inline void rcu_force_quiescent_state(void)
+#ifdef CONFIG_TINY_RCU
+
+static inline void rcu_preempt_note_context_switch(void)
{
}
-static inline void rcu_bh_force_quiescent_state(void)
+static inline void exit_rcu(void)
{
}
-static inline void rcu_sched_force_quiescent_state(void)
+static inline int rcu_needs_cpu(int cpu)
{
+ return 0;
}
-extern void synchronize_sched(void);
+#else /* #ifdef CONFIG_TINY_RCU */
+
+void rcu_preempt_note_context_switch(void);
+extern void exit_rcu(void);
+int rcu_preempt_needs_cpu(void);
-static inline void synchronize_rcu(void)
+static inline int rcu_needs_cpu(int cpu)
{
- synchronize_sched();
+ return rcu_preempt_needs_cpu();
}
-static inline void synchronize_rcu_bh(void)
+#endif /* #else #ifdef CONFIG_TINY_RCU */
+
+static inline void rcu_note_context_switch(int cpu)
{
- synchronize_sched();
+ rcu_sched_qs(cpu);
+ rcu_preempt_note_context_switch();
}
-static inline void synchronize_rcu_expedited(void)
+/*
+ * Return the number of grace periods.
+ */
+static inline long rcu_batches_completed(void)
{
- synchronize_sched();
+ return 0;
}
-static inline void synchronize_rcu_bh_expedited(void)
+/*
+ * Return the number of bottom-half grace periods.
+ */
+static inline long rcu_batches_completed_bh(void)
{
- synchronize_sched();
+ return 0;
}
-struct notifier_block;
-
-#ifdef CONFIG_NO_HZ
-
-extern void rcu_enter_nohz(void);
-extern void rcu_exit_nohz(void);
-
-#else /* #ifdef CONFIG_NO_HZ */
-
-static inline void rcu_enter_nohz(void)
+static inline void rcu_force_quiescent_state(void)
{
}
-static inline void rcu_exit_nohz(void)
+static inline void rcu_bh_force_quiescent_state(void)
{
}
-#endif /* #else #ifdef CONFIG_NO_HZ */
-
-static inline void exit_rcu(void)
+static inline void rcu_sched_force_quiescent_state(void)
{
}
-static inline int rcu_preempt_depth(void)
+static inline void rcu_cpu_stall_reset(void)
{
- return 0;
}
#ifdef CONFIG_DEBUG_LOCK_ALLOC
diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h
index c0ed1c056f29..95518e628794 100644
--- a/include/linux/rcutree.h
+++ b/include/linux/rcutree.h
@@ -30,64 +30,23 @@
#ifndef __LINUX_RCUTREE_H
#define __LINUX_RCUTREE_H
-struct notifier_block;
-
-extern void rcu_sched_qs(int cpu);
-extern void rcu_bh_qs(int cpu);
extern void rcu_note_context_switch(int cpu);
extern int rcu_needs_cpu(int cpu);
+extern void rcu_cpu_stall_reset(void);
#ifdef CONFIG_TREE_PREEMPT_RCU
-extern void __rcu_read_lock(void);
-extern void __rcu_read_unlock(void);
-extern void synchronize_rcu(void);
extern void exit_rcu(void);
-/*
- * Defined as macro as it is a very low level header
- * included from areas that don't even know about current
- */
-#define rcu_preempt_depth() (current->rcu_read_lock_nesting)
-
#else /* #ifdef CONFIG_TREE_PREEMPT_RCU */
-static inline void __rcu_read_lock(void)
-{
- preempt_disable();
-}
-
-static inline void __rcu_read_unlock(void)
-{
- preempt_enable();
-}
-
-#define synchronize_rcu synchronize_sched
-
static inline void exit_rcu(void)
{
}
-static inline int rcu_preempt_depth(void)
-{
- return 0;
-}
-
#endif /* #else #ifdef CONFIG_TREE_PREEMPT_RCU */
-static inline void __rcu_read_lock_bh(void)
-{
- local_bh_disable();
-}
-static inline void __rcu_read_unlock_bh(void)
-{
- local_bh_enable();
-}
-
-extern void call_rcu_sched(struct rcu_head *head,
- void (*func)(struct rcu_head *rcu));
extern void synchronize_rcu_bh(void);
-extern void synchronize_sched(void);
extern void synchronize_rcu_expedited(void);
static inline void synchronize_rcu_bh_expedited(void)
@@ -95,7 +54,7 @@ static inline void synchronize_rcu_bh_expedited(void)
synchronize_sched_expedited();
}
-extern void rcu_check_callbacks(int cpu, int user);
+extern void rcu_barrier(void);
extern long rcu_batches_completed(void);
extern long rcu_batches_completed_bh(void);
@@ -104,18 +63,6 @@ extern void rcu_force_quiescent_state(void);
extern void rcu_bh_force_quiescent_state(void);
extern void rcu_sched_force_quiescent_state(void);
-#ifdef CONFIG_NO_HZ
-void rcu_enter_nohz(void);
-void rcu_exit_nohz(void);
-#else /* CONFIG_NO_HZ */
-static inline void rcu_enter_nohz(void)
-{
-}
-static inline void rcu_exit_nohz(void)
-{
-}
-#endif /* CONFIG_NO_HZ */
-
/* A context switch is a grace period for RCU-sched and RCU-bh. */
static inline int rcu_blocking_is_gp(void)
{
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 1e2a6db2d7dd..0383601a927c 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -875,6 +875,7 @@ enum sched_domain_level {
SD_LV_NONE = 0,
SD_LV_SIBLING,
SD_LV_MC,
+ SD_LV_BOOK,
SD_LV_CPU,
SD_LV_NODE,
SD_LV_ALLNODES,
@@ -1160,6 +1161,13 @@ struct sched_rt_entity {
struct rcu_node;
+enum perf_event_task_context {
+ perf_invalid_context = -1,
+ perf_hw_context = 0,
+ perf_sw_context,
+ perf_nr_task_contexts,
+};
+
struct task_struct {
volatile long state; /* -1 unrunnable, 0 runnable, >0 stopped */
void *stack;
@@ -1202,11 +1210,13 @@ struct task_struct {
unsigned int policy;
cpumask_t cpus_allowed;
-#ifdef CONFIG_TREE_PREEMPT_RCU
+#ifdef CONFIG_PREEMPT_RCU
int rcu_read_lock_nesting;
char rcu_read_unlock_special;
- struct rcu_node *rcu_blocked_node;
struct list_head rcu_node_entry;
+#endif /* #ifdef CONFIG_PREEMPT_RCU */
+#ifdef CONFIG_TREE_PREEMPT_RCU
+ struct rcu_node *rcu_blocked_node;
#endif /* #ifdef CONFIG_TREE_PREEMPT_RCU */
#if defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT)
@@ -1288,9 +1298,9 @@ struct task_struct {
struct list_head cpu_timers[3];
/* process credentials */
- const struct cred *real_cred; /* objective and real subjective task
+ const struct cred __rcu *real_cred; /* objective and real subjective task
* credentials (COW) */
- const struct cred *cred; /* effective (overridable) subjective task
+ const struct cred __rcu *cred; /* effective (overridable) subjective task
* credentials (COW) */
struct mutex cred_guard_mutex; /* guard against foreign influences on
* credential calculations
@@ -1418,7 +1428,7 @@ struct task_struct {
#endif
#ifdef CONFIG_CGROUPS
/* Control Group info protected by css_set_lock */
- struct css_set *cgroups;
+ struct css_set __rcu *cgroups;
/* cg_list protected by css_set_lock and tsk->alloc_lock */
struct list_head cg_list;
#endif
@@ -1431,7 +1441,7 @@ struct task_struct {
struct futex_pi_state *pi_state_cache;
#endif
#ifdef CONFIG_PERF_EVENTS
- struct perf_event_context *perf_event_ctxp;
+ struct perf_event_context *perf_event_ctxp[perf_nr_task_contexts];
struct mutex perf_event_mutex;
struct list_head perf_event_list;
#endif
@@ -1681,8 +1691,7 @@ extern void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t *
/*
* Per process flags
*/
-#define PF_ALIGNWARN 0x00000001 /* Print alignment warning msgs */
- /* Not implemented yet, only for 486*/
+#define PF_KSOFTIRQD 0x00000001 /* I am ksoftirqd */
#define PF_STARTING 0x00000002 /* being created */
#define PF_EXITING 0x00000004 /* getting shut down */
#define PF_EXITPIDONE 0x00000008 /* pi exit done on shut down */
@@ -1740,7 +1749,7 @@ extern void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t *
#define tsk_used_math(p) ((p)->flags & PF_USED_MATH)
#define used_math() tsk_used_math(current)
-#ifdef CONFIG_TREE_PREEMPT_RCU
+#ifdef CONFIG_PREEMPT_RCU
#define RCU_READ_UNLOCK_BLOCKED (1 << 0) /* blocked while in RCU read-side. */
#define RCU_READ_UNLOCK_NEED_QS (1 << 1) /* RCU core needs CPU response. */
@@ -1749,7 +1758,9 @@ static inline void rcu_copy_process(struct task_struct *p)
{
p->rcu_read_lock_nesting = 0;
p->rcu_read_unlock_special = 0;
+#ifdef CONFIG_TREE_PREEMPT_RCU
p->rcu_blocked_node = NULL;
+#endif
INIT_LIST_HEAD(&p->rcu_node_entry);
}
@@ -1826,6 +1837,19 @@ extern void sched_clock_idle_sleep_event(void);
extern void sched_clock_idle_wakeup_event(u64 delta_ns);
#endif
+#ifdef CONFIG_IRQ_TIME_ACCOUNTING
+/*
+ * An i/f to runtime opt-in for irq time accounting based off of sched_clock.
+ * The reason for this explicit opt-in is not to have perf penalty with
+ * slow sched_clocks.
+ */
+extern void enable_sched_clock_irqtime(void);
+extern void disable_sched_clock_irqtime(void);
+#else
+static inline void enable_sched_clock_irqtime(void) {}
+static inline void disable_sched_clock_irqtime(void) {}
+#endif
+
extern unsigned long long
task_sched_runtime(struct task_struct *task);
extern unsigned long long thread_group_sched_runtime(struct task_struct *task);
@@ -2367,9 +2391,9 @@ extern int __cond_resched_lock(spinlock_t *lock);
extern int __cond_resched_softirq(void);
-#define cond_resched_softirq() ({ \
- __might_sleep(__FILE__, __LINE__, SOFTIRQ_OFFSET); \
- __cond_resched_softirq(); \
+#define cond_resched_softirq() ({ \
+ __might_sleep(__FILE__, __LINE__, SOFTIRQ_DISABLE_OFFSET); \
+ __cond_resched_softirq(); \
})
/*
diff --git a/include/linux/security.h b/include/linux/security.h
index a22219afff09..b8246a8df7d2 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -74,7 +74,7 @@ extern int cap_file_mmap(struct file *file, unsigned long reqprot,
extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
unsigned long arg4, unsigned long arg5);
-extern int cap_task_setscheduler(struct task_struct *p, int policy, struct sched_param *lp);
+extern int cap_task_setscheduler(struct task_struct *p);
extern int cap_task_setioprio(struct task_struct *p, int ioprio);
extern int cap_task_setnice(struct task_struct *p, int nice);
extern int cap_syslog(int type, bool from_file);
@@ -959,6 +959,12 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
* Sets the new child socket's sid to the openreq sid.
* @inet_conn_established:
* Sets the connection's peersid to the secmark on skb.
+ * @secmark_relabel_packet:
+ * check if the process should be allowed to relabel packets to the given secid
+ * @security_secmark_refcount_inc
+ * tells the LSM to increment the number of secmark labeling rules loaded
+ * @security_secmark_refcount_dec
+ * tells the LSM to decrement the number of secmark labeling rules loaded
* @req_classify_flow:
* Sets the flow's sid to the openreq sid.
* @tun_dev_create:
@@ -1279,9 +1285,13 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
* Return 0 if permission is granted.
*
* @secid_to_secctx:
- * Convert secid to security context.
+ * Convert secid to security context. If secdata is NULL the length of
+ * the result will be returned in seclen, but no secdata will be returned.
+ * This does mean that the length could change between calls to check the
+ * length and the next call which actually allocates and returns the secdata.
* @secid contains the security ID.
* @secdata contains the pointer that stores the converted security context.
+ * @seclen pointer which contains the length of the data
* @secctx_to_secid:
* Convert security context to secid.
* @secid contains the pointer to the generated security ID.
@@ -1501,8 +1511,7 @@ struct security_operations {
int (*task_getioprio) (struct task_struct *p);
int (*task_setrlimit) (struct task_struct *p, unsigned int resource,
struct rlimit *new_rlim);
- int (*task_setscheduler) (struct task_struct *p, int policy,
- struct sched_param *lp);
+ int (*task_setscheduler) (struct task_struct *p);
int (*task_getscheduler) (struct task_struct *p);
int (*task_movememory) (struct task_struct *p);
int (*task_kill) (struct task_struct *p,
@@ -1594,6 +1603,9 @@ struct security_operations {
struct request_sock *req);
void (*inet_csk_clone) (struct sock *newsk, const struct request_sock *req);
void (*inet_conn_established) (struct sock *sk, struct sk_buff *skb);
+ int (*secmark_relabel_packet) (u32 secid);
+ void (*secmark_refcount_inc) (void);
+ void (*secmark_refcount_dec) (void);
void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
int (*tun_dev_create)(void);
void (*tun_dev_post_create)(struct sock *sk);
@@ -1752,8 +1764,7 @@ int security_task_setioprio(struct task_struct *p, int ioprio);
int security_task_getioprio(struct task_struct *p);
int security_task_setrlimit(struct task_struct *p, unsigned int resource,
struct rlimit *new_rlim);
-int security_task_setscheduler(struct task_struct *p,
- int policy, struct sched_param *lp);
+int security_task_setscheduler(struct task_struct *p);
int security_task_getscheduler(struct task_struct *p);
int security_task_movememory(struct task_struct *p);
int security_task_kill(struct task_struct *p, struct siginfo *info,
@@ -2320,11 +2331,9 @@ static inline int security_task_setrlimit(struct task_struct *p,
return 0;
}
-static inline int security_task_setscheduler(struct task_struct *p,
- int policy,
- struct sched_param *lp)
+static inline int security_task_setscheduler(struct task_struct *p)
{
- return cap_task_setscheduler(p, policy, lp);
+ return cap_task_setscheduler(p);
}
static inline int security_task_getscheduler(struct task_struct *p)
@@ -2551,6 +2560,9 @@ void security_inet_csk_clone(struct sock *newsk,
const struct request_sock *req);
void security_inet_conn_established(struct sock *sk,
struct sk_buff *skb);
+int security_secmark_relabel_packet(u32 secid);
+void security_secmark_refcount_inc(void);
+void security_secmark_refcount_dec(void);
int security_tun_dev_create(void);
void security_tun_dev_post_create(struct sock *sk);
int security_tun_dev_attach(struct sock *sk);
@@ -2705,6 +2717,19 @@ static inline void security_inet_conn_established(struct sock *sk,
{
}
+static inline int security_secmark_relabel_packet(u32 secid)
+{
+ return 0;
+}
+
+static inline void security_secmark_refcount_inc(void)
+{
+}
+
+static inline void security_secmark_refcount_dec(void)
+{
+}
+
static inline int security_tun_dev_create(void)
{
return 0;
diff --git a/include/linux/selinux.h b/include/linux/selinux.h
index 82e0f26a1299..44f459612690 100644
--- a/include/linux/selinux.h
+++ b/include/linux/selinux.h
@@ -21,74 +21,11 @@ struct kern_ipc_perm;
#ifdef CONFIG_SECURITY_SELINUX
/**
- * selinux_string_to_sid - map a security context string to a security ID
- * @str: the security context string to be mapped
- * @sid: ID value returned via this.
- *
- * Returns 0 if successful, with the SID stored in sid. A value
- * of zero for sid indicates no SID could be determined (but no error
- * occurred).
- */
-int selinux_string_to_sid(char *str, u32 *sid);
-
-/**
- * selinux_secmark_relabel_packet_permission - secmark permission check
- * @sid: SECMARK ID value to be applied to network packet
- *
- * Returns 0 if the current task is allowed to set the SECMARK label of
- * packets with the supplied security ID. Note that it is implicit that
- * the packet is always being relabeled from the default unlabeled value,
- * and that the access control decision is made in the AVC.
- */
-int selinux_secmark_relabel_packet_permission(u32 sid);
-
-/**
- * selinux_secmark_refcount_inc - increments the secmark use counter
- *
- * SELinux keeps track of the current SECMARK targets in use so it knows
- * when to apply SECMARK label access checks to network packets. This
- * function incements this reference count to indicate that a new SECMARK
- * target has been configured.
- */
-void selinux_secmark_refcount_inc(void);
-
-/**
- * selinux_secmark_refcount_dec - decrements the secmark use counter
- *
- * SELinux keeps track of the current SECMARK targets in use so it knows
- * when to apply SECMARK label access checks to network packets. This
- * function decements this reference count to indicate that one of the
- * existing SECMARK targets has been removed/flushed.
- */
-void selinux_secmark_refcount_dec(void);
-
-/**
* selinux_is_enabled - is SELinux enabled?
*/
bool selinux_is_enabled(void);
#else
-static inline int selinux_string_to_sid(const char *str, u32 *sid)
-{
- *sid = 0;
- return 0;
-}
-
-static inline int selinux_secmark_relabel_packet_permission(u32 sid)
-{
- return 0;
-}
-
-static inline void selinux_secmark_refcount_inc(void)
-{
- return;
-}
-
-static inline void selinux_secmark_refcount_dec(void)
-{
- return;
-}
-
static inline bool selinux_is_enabled(void)
{
return false;
diff --git a/include/linux/srcu.h b/include/linux/srcu.h
index 4d5d2f546dbf..58971e891f48 100644
--- a/include/linux/srcu.h
+++ b/include/linux/srcu.h
@@ -108,19 +108,43 @@ static inline int srcu_read_lock_held(struct srcu_struct *sp)
#endif /* #else #ifdef CONFIG_DEBUG_LOCK_ALLOC */
/**
- * srcu_dereference - fetch SRCU-protected pointer with checking
+ * srcu_dereference_check - fetch SRCU-protected pointer for later dereferencing
+ * @p: the pointer to fetch and protect for later dereferencing
+ * @sp: pointer to the srcu_struct, which is used to check that we
+ * really are in an SRCU read-side critical section.
+ * @c: condition to check for update-side use
*
- * Makes rcu_dereference_check() do the dirty work.
+ * If PROVE_RCU is enabled, invoking this outside of an RCU read-side
+ * critical section will result in an RCU-lockdep splat, unless @c evaluates
+ * to 1. The @c argument will normally be a logical expression containing
+ * lockdep_is_held() calls.
*/
-#define srcu_dereference(p, sp) \
- rcu_dereference_check(p, srcu_read_lock_held(sp))
+#define srcu_dereference_check(p, sp, c) \
+ __rcu_dereference_check((p), srcu_read_lock_held(sp) || (c), __rcu)
+
+/**
+ * srcu_dereference - fetch SRCU-protected pointer for later dereferencing
+ * @p: the pointer to fetch and protect for later dereferencing
+ * @sp: pointer to the srcu_struct, which is used to check that we
+ * really are in an SRCU read-side critical section.
+ *
+ * Makes rcu_dereference_check() do the dirty work. If PROVE_RCU
+ * is enabled, invoking this outside of an RCU read-side critical
+ * section will result in an RCU-lockdep splat.
+ */
+#define srcu_dereference(p, sp) srcu_dereference_check((p), (sp), 0)
/**
* srcu_read_lock - register a new reader for an SRCU-protected structure.
* @sp: srcu_struct in which to register the new reader.
*
* Enter an SRCU read-side critical section. Note that SRCU read-side
- * critical sections may be nested.
+ * critical sections may be nested. However, it is illegal to
+ * call anything that waits on an SRCU grace period for the same
+ * srcu_struct, whether directly or indirectly. Please note that
+ * one way to indirectly wait on an SRCU grace period is to acquire
+ * a mutex that is held elsewhere while calling synchronize_srcu() or
+ * synchronize_srcu_expedited().
*/
static inline int srcu_read_lock(struct srcu_struct *sp) __acquires(sp)
{
diff --git a/include/linux/stop_machine.h b/include/linux/stop_machine.h
index 6b524a0d02e4..1808960c5059 100644
--- a/include/linux/stop_machine.h
+++ b/include/linux/stop_machine.h
@@ -126,8 +126,8 @@ int __stop_machine(int (*fn)(void *), void *data, const struct cpumask *cpus);
#else /* CONFIG_STOP_MACHINE && CONFIG_SMP */
-static inline int stop_machine(int (*fn)(void *), void *data,
- const struct cpumask *cpus)
+static inline int __stop_machine(int (*fn)(void *), void *data,
+ const struct cpumask *cpus)
{
int ret;
local_irq_disable();
@@ -136,5 +136,11 @@ static inline int stop_machine(int (*fn)(void *), void *data,
return ret;
}
+static inline int stop_machine(int (*fn)(void *), void *data,
+ const struct cpumask *cpus)
+{
+ return __stop_machine(fn, data, cpus);
+}
+
#endif /* CONFIG_STOP_MACHINE && CONFIG_SMP */
#endif /* _LINUX_STOP_MACHINE */
diff --git a/include/linux/sunrpc/auth_gss.h b/include/linux/sunrpc/auth_gss.h
index 671538d25bc1..8eee9dbbfe7a 100644
--- a/include/linux/sunrpc/auth_gss.h
+++ b/include/linux/sunrpc/auth_gss.h
@@ -69,7 +69,7 @@ struct gss_cl_ctx {
enum rpc_gss_proc gc_proc;
u32 gc_seq;
spinlock_t gc_seq_lock;
- struct gss_ctx *gc_gss_ctx;
+ struct gss_ctx __rcu *gc_gss_ctx;
struct xdr_netobj gc_wire_ctx;
u32 gc_win;
unsigned long gc_expiry;
@@ -80,7 +80,7 @@ struct gss_upcall_msg;
struct gss_cred {
struct rpc_cred gc_base;
enum rpc_gss_svc gc_service;
- struct gss_cl_ctx *gc_ctx;
+ struct gss_cl_ctx __rcu *gc_ctx;
struct gss_upcall_msg *gc_upcall;
unsigned long gc_upcall_timestamp;
unsigned char gc_machine_cred : 1;
diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h
index a8cc4e13434c..c90696544176 100644
--- a/include/linux/thread_info.h
+++ b/include/linux/thread_info.h
@@ -23,12 +23,12 @@ struct restart_block {
};
/* For futex_wait and futex_wait_requeue_pi */
struct {
- u32 *uaddr;
+ u32 __user *uaddr;
u32 val;
u32 flags;
u32 bitset;
u64 time;
- u32 *uaddr2;
+ u32 __user *uaddr2;
} futex;
/* For nanosleep */
struct {
diff --git a/include/linux/topology.h b/include/linux/topology.h
index 64e084ff5e5c..b91a40e847d2 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -201,6 +201,12 @@ int arch_update_cpu_topology(void);
.balance_interval = 64, \
}
+#ifdef CONFIG_SCHED_BOOK
+#ifndef SD_BOOK_INIT
+#error Please define an appropriate SD_BOOK_INIT in include/asm/topology.h!!!
+#endif
+#endif /* CONFIG_SCHED_BOOK */
+
#ifdef CONFIG_NUMA
#ifndef SD_NODE_INIT
#error Please define an appropriate SD_NODE_INIT in include/asm/topology.h!!!
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index 103d1b61aacb..a4a90b6726ce 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -17,6 +17,7 @@
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/rcupdate.h>
+#include <linux/jump_label.h>
struct module;
struct tracepoint;
@@ -145,7 +146,9 @@ static inline void tracepoint_update_probe_range(struct tracepoint *begin,
extern struct tracepoint __tracepoint_##name; \
static inline void trace_##name(proto) \
{ \
- if (unlikely(__tracepoint_##name.state)) \
+ JUMP_LABEL(&__tracepoint_##name.state, do_trace); \
+ return; \
+do_trace: \
__DO_TRACE(&__tracepoint_##name, \
TP_PROTO(data_proto), \
TP_ARGS(data_args)); \
diff --git a/include/linux/types.h b/include/linux/types.h
index 01a082f56ef4..357dbc19606f 100644
--- a/include/linux/types.h
+++ b/include/linux/types.h
@@ -121,7 +121,15 @@ typedef __u64 u_int64_t;
typedef __s64 int64_t;
#endif
-/* this is a special 64bit data type that is 8-byte aligned */
+/*
+ * aligned_u64 should be used in defining kernel<->userspace ABIs to avoid
+ * common 32/64-bit compat problems.
+ * 64-bit values align to 4-byte boundaries on x86_32 (and possibly other
+ * architectures) and to 8-byte boundaries on 64-bit architetures. The new
+ * aligned_64 type enforces 8-byte alignment so that structs containing
+ * aligned_64 values have the same alignment on 32-bit and 64-bit architectures.
+ * No conversions are necessary between 32-bit user-space and a 64-bit kernel.
+ */
#define aligned_u64 __u64 __attribute__((aligned(8)))
#define aligned_be64 __be64 __attribute__((aligned(8)))
#define aligned_le64 __le64 __attribute__((aligned(8)))
@@ -178,6 +186,11 @@ typedef __u64 __bitwise __be64;
typedef __u16 __bitwise __sum16;
typedef __u32 __bitwise __wsum;
+/* this is a special 64bit data type that is 8-byte aligned */
+#define __aligned_u64 __u64 __attribute__((aligned(8)))
+#define __aligned_be64 __be64 __attribute__((aligned(8)))
+#define __aligned_le64 __le64 __attribute__((aligned(8)))
+
#ifdef __KERNEL__
typedef unsigned __bitwise__ gfp_t;
typedef unsigned __bitwise__ fmode_t;