diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/fscache-cache.h | 18 | ||||
| -rw-r--r-- | include/trace/events/cachefiles.h | 325 | ||||
| -rw-r--r-- | include/trace/events/fscache.h | 277 |
3 files changed, 618 insertions, 2 deletions
diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h index b19fa8592fc2..fbe102f37074 100644 --- a/include/linux/fscache-cache.h +++ b/include/linux/fscache-cache.h @@ -29,6 +29,18 @@ struct fscache_cache_ops; struct fscache_object; struct fscache_operation; +enum fscache_obj_ref_trace { + fscache_obj_get_add_to_deps, + fscache_obj_get_queue, + fscache_obj_put_alloc_fail, + fscache_obj_put_attach_fail, + fscache_obj_put_drop_obj, + fscache_obj_put_enq_dep, + fscache_obj_put_queue, + fscache_obj_put_work, + fscache_obj_ref__nr_traces +}; + /* * cache tag definition */ @@ -231,7 +243,8 @@ struct fscache_cache_ops { void (*lookup_complete)(struct fscache_object *object); /* increment the usage count on this object (may fail if unmounting) */ - struct fscache_object *(*grab_object)(struct fscache_object *object); + struct fscache_object *(*grab_object)(struct fscache_object *object, + enum fscache_obj_ref_trace why); /* pin an object in the cache */ int (*pin_object)(struct fscache_object *object); @@ -254,7 +267,8 @@ struct fscache_cache_ops { void (*drop_object)(struct fscache_object *object); /* dispose of a reference to an object */ - void (*put_object)(struct fscache_object *object); + void (*put_object)(struct fscache_object *object, + enum fscache_obj_ref_trace why); /* sync a cache */ void (*sync_cache)(struct fscache_cache *cache); diff --git a/include/trace/events/cachefiles.h b/include/trace/events/cachefiles.h new file mode 100644 index 000000000000..aa86e7dba511 --- /dev/null +++ b/include/trace/events/cachefiles.h @@ -0,0 +1,325 @@ +/* CacheFiles tracepoints + * + * Copyright (C) 2016 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM cachefiles + +#if !defined(_TRACE_CACHEFILES_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_CACHEFILES_H + +#include <linux/tracepoint.h> + +/* + * Define enums for tracing information. + */ +#ifndef __CACHEFILES_DECLARE_TRACE_ENUMS_ONCE_ONLY +#define __CACHEFILES_DECLARE_TRACE_ENUMS_ONCE_ONLY + +enum cachefiles_obj_ref_trace { + cachefiles_obj_put_wait_retry = fscache_obj_ref__nr_traces, + cachefiles_obj_put_wait_timeo, + cachefiles_obj_ref__nr_traces +}; + +#endif + +/* + * Define enum -> string mappings for display. + */ +#define cachefiles_obj_kill_traces \ + EM(FSCACHE_OBJECT_IS_STALE, "stale") \ + EM(FSCACHE_OBJECT_NO_SPACE, "no_space") \ + EM(FSCACHE_OBJECT_WAS_RETIRED, "was_retired") \ + E_(FSCACHE_OBJECT_WAS_CULLED, "was_culled") + +#define cachefiles_obj_ref_traces \ + EM(fscache_obj_get_add_to_deps, "GET add_to_deps") \ + EM(fscache_obj_get_queue, "GET queue") \ + EM(fscache_obj_put_alloc_fail, "PUT alloc_fail") \ + EM(fscache_obj_put_attach_fail, "PUT attach_fail") \ + EM(fscache_obj_put_drop_obj, "PUT drop_obj") \ + EM(fscache_obj_put_enq_dep, "PUT enq_dep") \ + EM(fscache_obj_put_queue, "PUT queue") \ + EM(fscache_obj_put_work, "PUT work") \ + EM(cachefiles_obj_put_wait_retry, "PUT wait_retry") \ + E_(cachefiles_obj_put_wait_timeo, "PUT wait_timeo") + +/* + * Export enum symbols via userspace. + */ +#undef EM +#undef E_ +#define EM(a, b) TRACE_DEFINE_ENUM(a); +#define E_(a, b) TRACE_DEFINE_ENUM(a); + +cachefiles_obj_kill_traces; +cachefiles_obj_ref_traces; + +/* + * Now redefine the EM() and E_() macros to map the enums to the strings that + * will be printed in the output. + */ +#undef EM +#undef E_ +#define EM(a, b) { a, b }, +#define E_(a, b) { a, b } + + +TRACE_EVENT(cachefiles_ref, + TP_PROTO(struct cachefiles_object *obj, + struct fscache_cookie *cookie, + enum cachefiles_obj_ref_trace why, + int usage), + + TP_ARGS(obj, cookie, why, usage), + + /* Note that obj may be NULL */ + TP_STRUCT__entry( + __field(struct cachefiles_object *, obj ) + __field(struct fscache_cookie *, cookie ) + __field(enum cachefiles_obj_ref_trace, why ) + __field(int, usage ) + ), + + TP_fast_assign( + __entry->obj = obj; + __entry->cookie = cookie; + __entry->usage = usage; + __entry->why = why; + ), + + TP_printk("c=%p o=%p u=%d %s", + __entry->cookie, __entry->obj, __entry->usage, + __print_symbolic(__entry->why, cachefiles_obj_ref_traces)) + ); + +TRACE_EVENT(cachefiles_lookup, + TP_PROTO(struct cachefiles_object *obj, + struct dentry *de, + struct inode *inode), + + TP_ARGS(obj, de, inode), + + TP_STRUCT__entry( + __field(struct cachefiles_object *, obj ) + __field(struct dentry *, de ) + __field(struct inode *, inode ) + ), + + TP_fast_assign( + __entry->obj = obj; + __entry->de = de; + __entry->inode = inode; + ), + + TP_printk("o=%p d=%p i=%p", + __entry->obj, __entry->de, __entry->inode) + ); + +TRACE_EVENT(cachefiles_mkdir, + TP_PROTO(struct cachefiles_object *obj, + struct dentry *de, int ret), + + TP_ARGS(obj, de, ret), + + TP_STRUCT__entry( + __field(struct cachefiles_object *, obj ) + __field(struct dentry *, de ) + __field(int, ret ) + ), + + TP_fast_assign( + __entry->obj = obj; + __entry->de = de; + __entry->ret = ret; + ), + + TP_printk("o=%p d=%p r=%u", + __entry->obj, __entry->de, __entry->ret) + ); + +TRACE_EVENT(cachefiles_create, + TP_PROTO(struct cachefiles_object *obj, + struct dentry *de, int ret), + + TP_ARGS(obj, de, ret), + + TP_STRUCT__entry( + __field(struct cachefiles_object *, obj ) + __field(struct dentry *, de ) + __field(int, ret ) + ), + + TP_fast_assign( + __entry->obj = obj; + __entry->de = de; + __entry->ret = ret; + ), + + TP_printk("o=%p d=%p r=%u", + __entry->obj, __entry->de, __entry->ret) + ); + +TRACE_EVENT(cachefiles_unlink, + TP_PROTO(struct cachefiles_object *obj, + struct dentry *de, + enum fscache_why_object_killed why), + + TP_ARGS(obj, de, why), + + /* Note that obj may be NULL */ + TP_STRUCT__entry( + __field(struct cachefiles_object *, obj ) + __field(struct dentry *, de ) + __field(enum fscache_why_object_killed, why ) + ), + + TP_fast_assign( + __entry->obj = obj; + __entry->de = de; + __entry->why = why; + ), + + TP_printk("o=%p d=%p w=%s", + __entry->obj, __entry->de, + __print_symbolic(__entry->why, cachefiles_obj_kill_traces)) + ); + +TRACE_EVENT(cachefiles_rename, + TP_PROTO(struct cachefiles_object *obj, + struct dentry *de, + struct dentry *to, + enum fscache_why_object_killed why), + + TP_ARGS(obj, de, to, why), + + /* Note that obj may be NULL */ + TP_STRUCT__entry( + __field(struct cachefiles_object *, obj ) + __field(struct dentry *, de ) + __field(struct dentry *, to ) + __field(enum fscache_why_object_killed, why ) + ), + + TP_fast_assign( + __entry->obj = obj; + __entry->de = de; + __entry->to = to; + __entry->why = why; + ), + + TP_printk("o=%p d=%p t=%p w=%s", + __entry->obj, __entry->de, __entry->to, + __print_symbolic(__entry->why, cachefiles_obj_kill_traces)) + ); + +TRACE_EVENT(cachefiles_mark_active, + TP_PROTO(struct cachefiles_object *obj, + struct dentry *de), + + TP_ARGS(obj, de), + + /* Note that obj may be NULL */ + TP_STRUCT__entry( + __field(struct cachefiles_object *, obj ) + __field(struct dentry *, de ) + ), + + TP_fast_assign( + __entry->obj = obj; + __entry->de = de; + ), + + TP_printk("o=%p d=%p", + __entry->obj, __entry->de) + ); + +TRACE_EVENT(cachefiles_wait_active, + TP_PROTO(struct cachefiles_object *obj, + struct dentry *de, + struct cachefiles_object *xobj), + + TP_ARGS(obj, de, xobj), + + /* Note that obj may be NULL */ + TP_STRUCT__entry( + __field(struct cachefiles_object *, obj ) + __field(struct dentry *, de ) + __field(struct cachefiles_object *, xobj ) + __field(u16, flags ) + __field(u16, fsc_flags ) + ), + + TP_fast_assign( + __entry->obj = obj; + __entry->de = de; + __entry->xobj = xobj; + __entry->flags = xobj->flags; + __entry->fsc_flags = xobj->fscache.flags; + ), + + TP_printk("o=%p d=%p wo=%p wf=%x wff=%x", + __entry->obj, __entry->de, __entry->xobj, + __entry->flags, __entry->fsc_flags) + ); + +TRACE_EVENT(cachefiles_mark_inactive, + TP_PROTO(struct cachefiles_object *obj, + struct dentry *de, + struct inode *inode), + + TP_ARGS(obj, de, inode), + + /* Note that obj may be NULL */ + TP_STRUCT__entry( + __field(struct cachefiles_object *, obj ) + __field(struct dentry *, de ) + __field(struct inode *, inode ) + ), + + TP_fast_assign( + __entry->obj = obj; + __entry->de = de; + __entry->inode = inode; + ), + + TP_printk("o=%p d=%p i=%p", + __entry->obj, __entry->de, __entry->inode) + ); + +TRACE_EVENT(cachefiles_mark_buried, + TP_PROTO(struct cachefiles_object *obj, + struct dentry *de, + enum fscache_why_object_killed why), + + TP_ARGS(obj, de, why), + + /* Note that obj may be NULL */ + TP_STRUCT__entry( + __field(struct cachefiles_object *, obj ) + __field(struct dentry *, de ) + __field(enum fscache_why_object_killed, why ) + ), + + TP_fast_assign( + __entry->obj = obj; + __entry->de = de; + __entry->why = why; + ), + + TP_printk("o=%p d=%p w=%s", + __entry->obj, __entry->de, + __print_symbolic(__entry->why, cachefiles_obj_kill_traces)) + ); + +#endif /* _TRACE_CACHEFILES_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> diff --git a/include/trace/events/fscache.h b/include/trace/events/fscache.h new file mode 100644 index 000000000000..99f5355d6281 --- /dev/null +++ b/include/trace/events/fscache.h @@ -0,0 +1,277 @@ +/* FS-Cache tracepoints + * + * Copyright (C) 2016 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM fscache + +#if !defined(_TRACE_FSCACHE_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_FSCACHE_H + +#include <linux/fscache.h> +#include <linux/tracepoint.h> + +/* + * Define enums for tracing information. + */ +#ifndef __FSCACHE_DECLARE_TRACE_ENUMS_ONCE_ONLY +#define __FSCACHE_DECLARE_TRACE_ENUMS_ONCE_ONLY + +enum fscache_cookie_trace { + fscache_cookie_get_acquire_parent, + fscache_cookie_get_attach_object, + fscache_cookie_get_register_netfs, + fscache_cookie_put_acquire_nobufs, + fscache_cookie_put_relinquish, + fscache_cookie_put_object, + fscache_cookie_put_parent, +}; + +#endif + +/* + * Declare tracing information enums and their string mappings for display. + */ +#define fscache_cookie_traces \ + EM(fscache_cookie_get_acquire_parent, "GET prn") \ + EM(fscache_cookie_get_attach_object, "GET obj") \ + EM(fscache_cookie_get_register_netfs, "GET net") \ + EM(fscache_cookie_put_acquire_nobufs, "PUT nbf") \ + EM(fscache_cookie_put_relinquish, "PUT rlq") \ + EM(fscache_cookie_put_object, "PUT obj") \ + E_(fscache_cookie_put_parent, "PUT prn") + +/* + * Export enum symbols via userspace. + */ +#undef EM +#undef E_ +#define EM(a, b) TRACE_DEFINE_ENUM(a); +#define E_(a, b) TRACE_DEFINE_ENUM(a); + +fscache_cookie_traces; + +/* + * Now redefine the EM() and E_() macros to map the enums to the strings that + * will be printed in the output. + */ +#undef EM +#undef E_ +#define EM(a, b) { a, b }, +#define E_(a, b) { a, b } + + +TRACE_EVENT(fscache_cookie, + TP_PROTO(struct fscache_cookie *cookie, + enum fscache_cookie_trace where, + int usage), + + TP_ARGS(cookie, where, usage), + + TP_STRUCT__entry( + __field(struct fscache_cookie *, cookie ) + __field(struct fscache_cookie *, parent ) + __field(enum fscache_cookie_trace, where ) + __field(int, usage ) + __field(int, n_children ) + __field(int, n_active ) + __field(u8, flags ) + ), + + TP_fast_assign( + __entry->cookie = cookie; + __entry->parent = cookie->parent; + __entry->where = where; + __entry->usage = usage; + __entry->n_children = atomic_read(&cookie->n_children); + __entry->n_active = atomic_read(&cookie->n_active); + __entry->flags = cookie->flags; + ), + + TP_printk("%s c=%p u=%d p=%p Nc=%d Na=%d f=%02x", + __print_symbolic(__entry->where, fscache_cookie_traces), + __entry->cookie, __entry->usage, + __entry->parent, __entry->n_children, __entry->n_active, + __entry->flags) + ); + +TRACE_EVENT(fscache_netfs, + TP_PROTO(struct fscache_netfs *netfs), + + TP_ARGS(netfs), + + TP_STRUCT__entry( + __field(struct fscache_cookie *, cookie ) + __array(char, name, 8 ) + ), + + TP_fast_assign( + __entry->cookie = netfs->primary_index; + strncpy(__entry->name, netfs->name, 8); + __entry->name[7] = 0; + ), + + TP_printk("c=%p n=%s", + __entry->cookie, __entry->name) + ); + +TRACE_EVENT(fscache_acquire, + TP_PROTO(struct fscache_cookie *cookie), + + TP_ARGS(cookie), + + TP_STRUCT__entry( + __field(struct fscache_cookie *, cookie ) + __field(struct fscache_cookie *, parent ) + __array(char, name, 8 ) + __field(int, p_usage ) + __field(int, p_n_children ) + __field(u8, p_flags ) + ), + + TP_fast_assign( + __entry->cookie = cookie; + __entry->parent = cookie->parent; + __entry->p_usage = atomic_read(&cookie->parent->usage); + __entry->p_n_children = atomic_read(&cookie->parent->n_children); + __entry->p_flags = cookie->parent->flags; + memcpy(__entry->name, cookie->def->name, 8); + __entry->name[7] = 0; + ), + + TP_printk("c=%p p=%p pu=%d pc=%d pf=%02x n=%s", + __entry->cookie, __entry->parent, __entry->p_usage, + __entry->p_n_children, __entry->p_flags, __entry->name) + ); + +TRACE_EVENT(fscache_relinquish, + TP_PROTO(struct fscache_cookie *cookie, bool retire), + + TP_ARGS(cookie, retire), + + TP_STRUCT__entry( + __field(struct fscache_cookie *, cookie ) + __field(struct fscache_cookie *, parent ) + __field(int, usage ) + __field(int, n_children ) + __field(int, n_active ) + __field(u8, flags ) + __field(bool, retire ) + ), + + TP_fast_assign( + __entry->cookie = cookie; + __entry->parent = cookie->parent; + __entry->usage = atomic_read(&cookie->usage); + __entry->n_children = atomic_read(&cookie->n_children); + __entry->n_active = atomic_read(&cookie->n_active); + __entry->flags = cookie->flags; + __entry->retire = retire; + ), + + TP_printk("c=%p u=%d p=%p Nc=%d Na=%d f=%02x r=%u", + __entry->cookie, __entry->usage, + __entry->parent, __entry->n_children, __entry->n_active, + __entry->flags, __entry->retire) + ); + +TRACE_EVENT(fscache_enable, + TP_PROTO(struct fscache_cookie *cookie), + + TP_ARGS(cookie), + + TP_STRUCT__entry( + __field(struct fscache_cookie *, cookie ) + __field(int, usage ) + __field(int, n_children ) + __field(int, n_active ) + __field(u8, flags ) + ), + + TP_fast_assign( + __entry->cookie = cookie; + __entry->usage = atomic_read(&cookie->usage); + __entry->n_children = atomic_read(&cookie->n_children); + __entry->n_active = atomic_read(&cookie->n_active); + __entry->flags = cookie->flags; + ), + + TP_printk("c=%p u=%d Nc=%d Na=%d f=%02x", + __entry->cookie, __entry->usage, + __entry->n_children, __entry->n_active, __entry->flags) + ); + +TRACE_EVENT(fscache_disable, + TP_PROTO(struct fscache_cookie *cookie), + + TP_ARGS(cookie), + + TP_STRUCT__entry( + __field(struct fscache_cookie *, cookie ) + __field(int, usage ) + __field(int, n_children ) + __field(int, n_active ) + __field(u8, flags ) + ), + + TP_fast_assign( + __entry->cookie = cookie; + __entry->usage = atomic_read(&cookie->usage); + __entry->n_children = atomic_read(&cookie->n_children); + __entry->n_active = atomic_read(&cookie->n_active); + __entry->flags = cookie->flags; + ), + + TP_printk("c=%p u=%d Nc=%d Na=%d f=%02x", + __entry->cookie, __entry->usage, + __entry->n_children, __entry->n_active, __entry->flags) + ); + +TRACE_EVENT(fscache_osm, + TP_PROTO(struct fscache_object *object, + const struct fscache_state *state, + bool wait, bool oob, s8 event_num), + + TP_ARGS(object, state, wait, oob, event_num), + + TP_STRUCT__entry( + __field(struct fscache_cookie *, cookie ) + __field(struct fscache_object *, object ) + __array(char, state, 8 ) + __field(bool, wait ) + __field(bool, oob ) + __field(s8, event_num ) + ), + + TP_fast_assign( + __entry->cookie = object->cookie; + __entry->object = object; + __entry->wait = wait; + __entry->oob = oob; + __entry->event_num = event_num; + memcpy(__entry->state, state->short_name, 8); + ), + + TP_printk("c=%p o=%p %s %s%sev=%d", + __entry->cookie, + __entry->object, + __entry->state, + __print_symbolic(__entry->wait, + { true, "WAIT" }, + { false, "WORK" }), + __print_symbolic(__entry->oob, + { true, " OOB " }, + { false, " " }), + __entry->event_num) + ); + +#endif /* _TRACE_FSCACHE_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> |