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-rw-r--r--fs/proc/array.c5
-rw-r--r--fs/proc/base.c192
-rw-r--r--fs/proc/generic.c13
-rw-r--r--fs/proc/inode.c2
-rw-r--r--fs/proc/task_mmu.c357
5 files changed, 467 insertions, 102 deletions
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 37668fe998ad..d88d518d30f6 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -159,6 +159,7 @@ static inline char * task_state(struct task_struct *p, char *buffer)
{
struct group_info *group_info;
int g;
+ struct fdtable *fdt = NULL;
read_lock(&tasklist_lock);
buffer += sprintf(buffer,
@@ -179,10 +180,12 @@ static inline char * task_state(struct task_struct *p, char *buffer)
p->gid, p->egid, p->sgid, p->fsgid);
read_unlock(&tasklist_lock);
task_lock(p);
+ if (p->files)
+ fdt = files_fdtable(p->files);
buffer += sprintf(buffer,
"FDSize:\t%d\n"
"Groups:\t",
- p->files ? p->files->max_fds : 0);
+ fdt ? fdt->max_fds : 0);
group_info = p->group_info;
get_group_info(group_info);
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 491f2d9f89ac..23db452ab428 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -11,6 +11,40 @@
* go into icache. We cache the reference to task_struct upon lookup too.
* Eventually it should become a filesystem in its own. We don't use the
* rest of procfs anymore.
+ *
+ *
+ * Changelog:
+ * 17-Jan-2005
+ * Allan Bezerra
+ * Bruna Moreira <bruna.moreira@indt.org.br>
+ * Edjard Mota <edjard.mota@indt.org.br>
+ * Ilias Biris <ilias.biris@indt.org.br>
+ * Mauricio Lin <mauricio.lin@indt.org.br>
+ *
+ * Embedded Linux Lab - 10LE Instituto Nokia de Tecnologia - INdT
+ *
+ * A new process specific entry (smaps) included in /proc. It shows the
+ * size of rss for each memory area. The maps entry lacks information
+ * about physical memory size (rss) for each mapped file, i.e.,
+ * rss information for executables and library files.
+ * This additional information is useful for any tools that need to know
+ * about physical memory consumption for a process specific library.
+ *
+ * Changelog:
+ * 21-Feb-2005
+ * Embedded Linux Lab - 10LE Instituto Nokia de Tecnologia - INdT
+ * Pud inclusion in the page table walking.
+ *
+ * ChangeLog:
+ * 10-Mar-2005
+ * 10LE Instituto Nokia de Tecnologia - INdT:
+ * A better way to walks through the page table as suggested by Hugh Dickins.
+ *
+ * Simo Piiroinen <simo.piiroinen@nokia.com>:
+ * Smaps information related to shared, private, clean and dirty pages.
+ *
+ * Paul Mundt <paul.mundt@nokia.com>:
+ * Overall revision about smaps.
*/
#include <asm/uaccess.h>
@@ -28,6 +62,7 @@
#include <linux/namespace.h>
#include <linux/mm.h>
#include <linux/smp_lock.h>
+#include <linux/rcupdate.h>
#include <linux/kallsyms.h>
#include <linux/mount.h>
#include <linux/security.h>
@@ -65,8 +100,10 @@ enum pid_directory_inos {
PROC_TGID_STAT,
PROC_TGID_STATM,
PROC_TGID_MAPS,
+ PROC_TGID_NUMA_MAPS,
PROC_TGID_MOUNTS,
PROC_TGID_WCHAN,
+ PROC_TGID_SMAPS,
#ifdef CONFIG_SCHEDSTATS
PROC_TGID_SCHEDSTAT,
#endif
@@ -83,7 +120,6 @@ enum pid_directory_inos {
#ifdef CONFIG_AUDITSYSCALL
PROC_TGID_LOGINUID,
#endif
- PROC_TGID_FD_DIR,
PROC_TGID_OOM_SCORE,
PROC_TGID_OOM_ADJUST,
PROC_TID_INO,
@@ -102,8 +138,10 @@ enum pid_directory_inos {
PROC_TID_STAT,
PROC_TID_STATM,
PROC_TID_MAPS,
+ PROC_TID_NUMA_MAPS,
PROC_TID_MOUNTS,
PROC_TID_WCHAN,
+ PROC_TID_SMAPS,
#ifdef CONFIG_SCHEDSTATS
PROC_TID_SCHEDSTAT,
#endif
@@ -120,9 +158,11 @@ enum pid_directory_inos {
#ifdef CONFIG_AUDITSYSCALL
PROC_TID_LOGINUID,
#endif
- PROC_TID_FD_DIR = 0x8000, /* 0x8000-0xffff */
PROC_TID_OOM_SCORE,
PROC_TID_OOM_ADJUST,
+
+ /* Add new entries before this */
+ PROC_TID_FD_DIR = 0x8000, /* 0x8000-0xffff */
};
struct pid_entry {
@@ -144,6 +184,9 @@ static struct pid_entry tgid_base_stuff[] = {
E(PROC_TGID_STAT, "stat", S_IFREG|S_IRUGO),
E(PROC_TGID_STATM, "statm", S_IFREG|S_IRUGO),
E(PROC_TGID_MAPS, "maps", S_IFREG|S_IRUGO),
+#ifdef CONFIG_NUMA
+ E(PROC_TGID_NUMA_MAPS, "numa_maps", S_IFREG|S_IRUGO),
+#endif
E(PROC_TGID_MEM, "mem", S_IFREG|S_IRUSR|S_IWUSR),
#ifdef CONFIG_SECCOMP
E(PROC_TGID_SECCOMP, "seccomp", S_IFREG|S_IRUSR|S_IWUSR),
@@ -152,6 +195,7 @@ static struct pid_entry tgid_base_stuff[] = {
E(PROC_TGID_ROOT, "root", S_IFLNK|S_IRWXUGO),
E(PROC_TGID_EXE, "exe", S_IFLNK|S_IRWXUGO),
E(PROC_TGID_MOUNTS, "mounts", S_IFREG|S_IRUGO),
+ E(PROC_TGID_SMAPS, "smaps", S_IFREG|S_IRUGO),
#ifdef CONFIG_SECURITY
E(PROC_TGID_ATTR, "attr", S_IFDIR|S_IRUGO|S_IXUGO),
#endif
@@ -180,6 +224,9 @@ static struct pid_entry tid_base_stuff[] = {
E(PROC_TID_STAT, "stat", S_IFREG|S_IRUGO),
E(PROC_TID_STATM, "statm", S_IFREG|S_IRUGO),
E(PROC_TID_MAPS, "maps", S_IFREG|S_IRUGO),
+#ifdef CONFIG_NUMA
+ E(PROC_TID_NUMA_MAPS, "numa_maps", S_IFREG|S_IRUGO),
+#endif
E(PROC_TID_MEM, "mem", S_IFREG|S_IRUSR|S_IWUSR),
#ifdef CONFIG_SECCOMP
E(PROC_TID_SECCOMP, "seccomp", S_IFREG|S_IRUSR|S_IWUSR),
@@ -188,6 +235,7 @@ static struct pid_entry tid_base_stuff[] = {
E(PROC_TID_ROOT, "root", S_IFLNK|S_IRWXUGO),
E(PROC_TID_EXE, "exe", S_IFLNK|S_IRWXUGO),
E(PROC_TID_MOUNTS, "mounts", S_IFREG|S_IRUGO),
+ E(PROC_TID_SMAPS, "smaps", S_IFREG|S_IRUGO),
#ifdef CONFIG_SECURITY
E(PROC_TID_ATTR, "attr", S_IFDIR|S_IRUGO|S_IXUGO),
#endif
@@ -236,30 +284,36 @@ static int proc_fd_link(struct inode *inode, struct dentry **dentry, struct vfsm
files = get_files_struct(task);
if (files) {
- spin_lock(&files->file_lock);
+ rcu_read_lock();
file = fcheck_files(files, fd);
if (file) {
*mnt = mntget(file->f_vfsmnt);
*dentry = dget(file->f_dentry);
- spin_unlock(&files->file_lock);
+ rcu_read_unlock();
put_files_struct(files);
return 0;
}
- spin_unlock(&files->file_lock);
+ rcu_read_unlock();
put_files_struct(files);
}
return -ENOENT;
}
-static int proc_cwd_link(struct inode *inode, struct dentry **dentry, struct vfsmount **mnt)
+static struct fs_struct *get_fs_struct(struct task_struct *task)
{
struct fs_struct *fs;
- int result = -ENOENT;
- task_lock(proc_task(inode));
- fs = proc_task(inode)->fs;
+ task_lock(task);
+ fs = task->fs;
if(fs)
atomic_inc(&fs->count);
- task_unlock(proc_task(inode));
+ task_unlock(task);
+ return fs;
+}
+
+static int proc_cwd_link(struct inode *inode, struct dentry **dentry, struct vfsmount **mnt)
+{
+ struct fs_struct *fs = get_fs_struct(proc_task(inode));
+ int result = -ENOENT;
if (fs) {
read_lock(&fs->lock);
*mnt = mntget(fs->pwdmnt);
@@ -273,13 +327,8 @@ static int proc_cwd_link(struct inode *inode, struct dentry **dentry, struct vfs
static int proc_root_link(struct inode *inode, struct dentry **dentry, struct vfsmount **mnt)
{
- struct fs_struct *fs;
+ struct fs_struct *fs = get_fs_struct(proc_task(inode));
int result = -ENOENT;
- task_lock(proc_task(inode));
- fs = proc_task(inode)->fs;
- if(fs)
- atomic_inc(&fs->count);
- task_unlock(proc_task(inode));
if (fs) {
read_lock(&fs->lock);
*mnt = mntget(fs->rootmnt);
@@ -298,33 +347,6 @@ static int proc_root_link(struct inode *inode, struct dentry **dentry, struct vf
(task->state == TASK_STOPPED || task->state == TASK_TRACED) && \
security_ptrace(current,task) == 0))
-static int may_ptrace_attach(struct task_struct *task)
-{
- int retval = 0;
-
- task_lock(task);
-
- if (!task->mm)
- goto out;
- if (((current->uid != task->euid) ||
- (current->uid != task->suid) ||
- (current->uid != task->uid) ||
- (current->gid != task->egid) ||
- (current->gid != task->sgid) ||
- (current->gid != task->gid)) && !capable(CAP_SYS_PTRACE))
- goto out;
- rmb();
- if (task->mm->dumpable != 1 && !capable(CAP_SYS_PTRACE))
- goto out;
- if (security_ptrace(current, task))
- goto out;
-
- retval = 1;
-out:
- task_unlock(task);
- return retval;
-}
-
static int proc_pid_environ(struct task_struct *task, char * buffer)
{
int res = 0;
@@ -334,7 +356,7 @@ static int proc_pid_environ(struct task_struct *task, char * buffer)
if (len > PAGE_SIZE)
len = PAGE_SIZE;
res = access_process_vm(task, mm->env_start, buffer, len, 0);
- if (!may_ptrace_attach(task))
+ if (!ptrace_may_attach(task))
res = -ESRCH;
mmput(mm);
}
@@ -515,6 +537,46 @@ static struct file_operations proc_maps_operations = {
.release = seq_release,
};
+#ifdef CONFIG_NUMA
+extern struct seq_operations proc_pid_numa_maps_op;
+static int numa_maps_open(struct inode *inode, struct file *file)
+{
+ struct task_struct *task = proc_task(inode);
+ int ret = seq_open(file, &proc_pid_numa_maps_op);
+ if (!ret) {
+ struct seq_file *m = file->private_data;
+ m->private = task;
+ }
+ return ret;
+}
+
+static struct file_operations proc_numa_maps_operations = {
+ .open = numa_maps_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+#endif
+
+extern struct seq_operations proc_pid_smaps_op;
+static int smaps_open(struct inode *inode, struct file *file)
+{
+ struct task_struct *task = proc_task(inode);
+ int ret = seq_open(file, &proc_pid_smaps_op);
+ if (!ret) {
+ struct seq_file *m = file->private_data;
+ m->private = task;
+ }
+ return ret;
+}
+
+static struct file_operations proc_smaps_operations = {
+ .open = smaps_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
extern struct seq_operations mounts_op;
static int mounts_open(struct inode *inode, struct file *file)
{
@@ -597,7 +659,7 @@ static ssize_t mem_read(struct file * file, char __user * buf,
int ret = -ESRCH;
struct mm_struct *mm;
- if (!MAY_PTRACE(task) || !may_ptrace_attach(task))
+ if (!MAY_PTRACE(task) || !ptrace_may_attach(task))
goto out;
ret = -ENOMEM;
@@ -623,7 +685,7 @@ static ssize_t mem_read(struct file * file, char __user * buf,
this_len = (count > PAGE_SIZE) ? PAGE_SIZE : count;
retval = access_process_vm(task, src, page, this_len, 0);
- if (!retval || !MAY_PTRACE(task) || !may_ptrace_attach(task)) {
+ if (!retval || !MAY_PTRACE(task) || !ptrace_may_attach(task)) {
if (!ret)
ret = -EIO;
break;
@@ -661,7 +723,7 @@ static ssize_t mem_write(struct file * file, const char * buf,
struct task_struct *task = proc_task(file->f_dentry->d_inode);
unsigned long dst = *ppos;
- if (!MAY_PTRACE(task) || !may_ptrace_attach(task))
+ if (!MAY_PTRACE(task) || !ptrace_may_attach(task))
return -ESRCH;
page = (char *)__get_free_page(GFP_USER);
@@ -978,6 +1040,7 @@ static int proc_readfd(struct file * filp, void * dirent, filldir_t filldir)
int retval;
char buf[NUMBUF];
struct files_struct * files;
+ struct fdtable *fdt;
retval = -ENOENT;
if (!pid_alive(p))
@@ -1000,15 +1063,16 @@ static int proc_readfd(struct file * filp, void * dirent, filldir_t filldir)
files = get_files_struct(p);
if (!files)
goto out;
- spin_lock(&files->file_lock);
+ rcu_read_lock();
+ fdt = files_fdtable(files);
for (fd = filp->f_pos-2;
- fd < files->max_fds;
+ fd < fdt->max_fds;
fd++, filp->f_pos++) {
unsigned int i,j;
if (!fcheck_files(files, fd))
continue;
- spin_unlock(&files->file_lock);
+ rcu_read_unlock();
j = NUMBUF;
i = fd;
@@ -1020,12 +1084,12 @@ static int proc_readfd(struct file * filp, void * dirent, filldir_t filldir)
ino = fake_ino(tid, PROC_TID_FD_DIR + fd);
if (filldir(dirent, buf+j, NUMBUF-j, fd+2, ino, DT_LNK) < 0) {
- spin_lock(&files->file_lock);
+ rcu_read_lock();
break;
}
- spin_lock(&files->file_lock);
+ rcu_read_lock();
}
- spin_unlock(&files->file_lock);
+ rcu_read_unlock();
put_files_struct(files);
}
out:
@@ -1200,9 +1264,9 @@ static int tid_fd_revalidate(struct dentry *dentry, struct nameidata *nd)
files = get_files_struct(task);
if (files) {
- spin_lock(&files->file_lock);
+ rcu_read_lock();
if (fcheck_files(files, fd)) {
- spin_unlock(&files->file_lock);
+ rcu_read_unlock();
put_files_struct(files);
if (task_dumpable(task)) {
inode->i_uid = task->euid;
@@ -1214,7 +1278,7 @@ static int tid_fd_revalidate(struct dentry *dentry, struct nameidata *nd)
security_task_to_inode(task, inode);
return 1;
}
- spin_unlock(&files->file_lock);
+ rcu_read_unlock();
put_files_struct(files);
}
d_drop(dentry);
@@ -1306,7 +1370,7 @@ static struct dentry *proc_lookupfd(struct inode * dir, struct dentry * dentry,
if (!files)
goto out_unlock;
inode->i_mode = S_IFLNK;
- spin_lock(&files->file_lock);
+ rcu_read_lock();
file = fcheck_files(files, fd);
if (!file)
goto out_unlock2;
@@ -1314,7 +1378,7 @@ static struct dentry *proc_lookupfd(struct inode * dir, struct dentry * dentry,
inode->i_mode |= S_IRUSR | S_IXUSR;
if (file->f_mode & 2)
inode->i_mode |= S_IWUSR | S_IXUSR;
- spin_unlock(&files->file_lock);
+ rcu_read_unlock();
put_files_struct(files);
inode->i_op = &proc_pid_link_inode_operations;
inode->i_size = 64;
@@ -1324,7 +1388,7 @@ static struct dentry *proc_lookupfd(struct inode * dir, struct dentry * dentry,
return NULL;
out_unlock2:
- spin_unlock(&files->file_lock);
+ rcu_read_unlock();
put_files_struct(files);
out_unlock:
iput(inode);
@@ -1524,6 +1588,12 @@ static struct dentry *proc_pident_lookup(struct inode *dir,
case PROC_TGID_MAPS:
inode->i_fop = &proc_maps_operations;
break;
+#ifdef CONFIG_NUMA
+ case PROC_TID_NUMA_MAPS:
+ case PROC_TGID_NUMA_MAPS:
+ inode->i_fop = &proc_numa_maps_operations;
+ break;
+#endif
case PROC_TID_MEM:
case PROC_TGID_MEM:
inode->i_op = &proc_mem_inode_operations;
@@ -1539,6 +1609,10 @@ static struct dentry *proc_pident_lookup(struct inode *dir,
case PROC_TGID_MOUNTS:
inode->i_fop = &proc_mounts_operations;
break;
+ case PROC_TID_SMAPS:
+ case PROC_TGID_SMAPS:
+ inode->i_fop = &proc_smaps_operations;
+ break;
#ifdef CONFIG_SECURITY
case PROC_TID_ATTR:
inode->i_nlink = 2;
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index abe8920313fb..8a8c34461d48 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -249,6 +249,18 @@ out:
return error;
}
+static int proc_getattr(struct vfsmount *mnt, struct dentry *dentry,
+ struct kstat *stat)
+{
+ struct inode *inode = dentry->d_inode;
+ struct proc_dir_entry *de = PROC_I(inode)->pde;
+ if (de && de->nlink)
+ inode->i_nlink = de->nlink;
+
+ generic_fillattr(inode, stat);
+ return 0;
+}
+
static struct inode_operations proc_file_inode_operations = {
.setattr = proc_notify_change,
};
@@ -475,6 +487,7 @@ static struct file_operations proc_dir_operations = {
*/
static struct inode_operations proc_dir_inode_operations = {
.lookup = proc_lookup,
+ .getattr = proc_getattr,
.setattr = proc_notify_change,
};
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 133c28685105..effa6c0c467a 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -60,6 +60,8 @@ static void proc_delete_inode(struct inode *inode)
struct proc_dir_entry *de;
struct task_struct *tsk;
+ truncate_inode_pages(&inode->i_data, 0);
+
/* Let go of any associated process */
tsk = PROC_I(inode)->task;
if (tsk)
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 28b4a0253a92..c7ef3e48e35b 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -2,8 +2,13 @@
#include <linux/hugetlb.h>
#include <linux/mount.h>
#include <linux/seq_file.h>
+#include <linux/highmem.h>
+#include <linux/pagemap.h>
+#include <linux/mempolicy.h>
+
#include <asm/elf.h>
#include <asm/uaccess.h>
+#include <asm/tlbflush.h>
#include "internal.h"
char *task_mem(struct mm_struct *mm, char *buffer)
@@ -87,49 +92,58 @@ static void pad_len_spaces(struct seq_file *m, int len)
seq_printf(m, "%*c", len, ' ');
}
-static int show_map(struct seq_file *m, void *v)
+struct mem_size_stats
+{
+ unsigned long resident;
+ unsigned long shared_clean;
+ unsigned long shared_dirty;
+ unsigned long private_clean;
+ unsigned long private_dirty;
+};
+
+static int show_map_internal(struct seq_file *m, void *v, struct mem_size_stats *mss)
{
struct task_struct *task = m->private;
- struct vm_area_struct *map = v;
- struct mm_struct *mm = map->vm_mm;
- struct file *file = map->vm_file;
- int flags = map->vm_flags;
+ struct vm_area_struct *vma = v;
+ struct mm_struct *mm = vma->vm_mm;
+ struct file *file = vma->vm_file;
+ int flags = vma->vm_flags;
unsigned long ino = 0;
dev_t dev = 0;
int len;
if (file) {
- struct inode *inode = map->vm_file->f_dentry->d_inode;
+ struct inode *inode = vma->vm_file->f_dentry->d_inode;
dev = inode->i_sb->s_dev;
ino = inode->i_ino;
}
seq_printf(m, "%08lx-%08lx %c%c%c%c %08lx %02x:%02x %lu %n",
- map->vm_start,
- map->vm_end,
+ vma->vm_start,
+ vma->vm_end,
flags & VM_READ ? 'r' : '-',
flags & VM_WRITE ? 'w' : '-',
flags & VM_EXEC ? 'x' : '-',
flags & VM_MAYSHARE ? 's' : 'p',
- map->vm_pgoff << PAGE_SHIFT,
+ vma->vm_pgoff << PAGE_SHIFT,
MAJOR(dev), MINOR(dev), ino, &len);
/*
* Print the dentry name for named mappings, and a
* special [heap] marker for the heap:
*/
- if (map->vm_file) {
+ if (file) {
pad_len_spaces(m, len);
- seq_path(m, file->f_vfsmnt, file->f_dentry, "");
+ seq_path(m, file->f_vfsmnt, file->f_dentry, "\n");
} else {
if (mm) {
- if (map->vm_start <= mm->start_brk &&
- map->vm_end >= mm->brk) {
+ if (vma->vm_start <= mm->start_brk &&
+ vma->vm_end >= mm->brk) {
pad_len_spaces(m, len);
seq_puts(m, "[heap]");
} else {
- if (map->vm_start <= mm->start_stack &&
- map->vm_end >= mm->start_stack) {
+ if (vma->vm_start <= mm->start_stack &&
+ vma->vm_end >= mm->start_stack) {
pad_len_spaces(m, len);
seq_puts(m, "[stack]");
@@ -141,24 +155,146 @@ static int show_map(struct seq_file *m, void *v)
}
}
seq_putc(m, '\n');
- if (m->count < m->size) /* map is copied successfully */
- m->version = (map != get_gate_vma(task))? map->vm_start: 0;
+
+ if (mss)
+ seq_printf(m,
+ "Size: %8lu kB\n"
+ "Rss: %8lu kB\n"
+ "Shared_Clean: %8lu kB\n"
+ "Shared_Dirty: %8lu kB\n"
+ "Private_Clean: %8lu kB\n"
+ "Private_Dirty: %8lu kB\n",
+ (vma->vm_end - vma->vm_start) >> 10,
+ mss->resident >> 10,
+ mss->shared_clean >> 10,
+ mss->shared_dirty >> 10,
+ mss->private_clean >> 10,
+ mss->private_dirty >> 10);
+
+ if (m->count < m->size) /* vma is copied successfully */
+ m->version = (vma != get_gate_vma(task))? vma->vm_start: 0;
return 0;
}
+static int show_map(struct seq_file *m, void *v)
+{
+ return show_map_internal(m, v, 0);
+}
+
+static void smaps_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
+ unsigned long addr, unsigned long end,
+ struct mem_size_stats *mss)
+{
+ pte_t *pte, ptent;
+ unsigned long pfn;
+ struct page *page;
+
+ pte = pte_offset_map(pmd, addr);
+ do {
+ ptent = *pte;
+ if (pte_none(ptent) || !pte_present(ptent))
+ continue;
+
+ mss->resident += PAGE_SIZE;
+ pfn = pte_pfn(ptent);
+ if (!pfn_valid(pfn))
+ continue;
+
+ page = pfn_to_page(pfn);
+ if (page_count(page) >= 2) {
+ if (pte_dirty(ptent))
+ mss->shared_dirty += PAGE_SIZE;
+ else
+ mss->shared_clean += PAGE_SIZE;
+ } else {
+ if (pte_dirty(ptent))
+ mss->private_dirty += PAGE_SIZE;
+ else
+ mss->private_clean += PAGE_SIZE;
+ }
+ } while (pte++, addr += PAGE_SIZE, addr != end);
+ pte_unmap(pte - 1);
+ cond_resched_lock(&vma->vm_mm->page_table_lock);
+}
+
+static inline void smaps_pmd_range(struct vm_area_struct *vma, pud_t *pud,
+ unsigned long addr, unsigned long end,
+ struct mem_size_stats *mss)
+{
+ pmd_t *pmd;
+ unsigned long next;
+
+ pmd = pmd_offset(pud, addr);
+ do {
+ next = pmd_addr_end(addr, end);
+ if (pmd_none_or_clear_bad(pmd))
+ continue;
+ smaps_pte_range(vma, pmd, addr, next, mss);
+ } while (pmd++, addr = next, addr != end);
+}
+
+static inline void smaps_pud_range(struct vm_area_struct *vma, pgd_t *pgd,
+ unsigned long addr, unsigned long end,
+ struct mem_size_stats *mss)
+{
+ pud_t *pud;
+ unsigned long next;
+
+ pud = pud_offset(pgd, addr);
+ do {
+ next = pud_addr_end(addr, end);
+ if (pud_none_or_clear_bad(pud))
+ continue;
+ smaps_pmd_range(vma, pud, addr, next, mss);
+ } while (pud++, addr = next, addr != end);
+}
+
+static inline void smaps_pgd_range(struct vm_area_struct *vma,
+ unsigned long addr, unsigned long end,
+ struct mem_size_stats *mss)
+{
+ pgd_t *pgd;
+ unsigned long next;
+
+ pgd = pgd_offset(vma->vm_mm, addr);
+ do {
+ next = pgd_addr_end(addr, end);
+ if (pgd_none_or_clear_bad(pgd))
+ continue;
+ smaps_pud_range(vma, pgd, addr, next, mss);
+ } while (pgd++, addr = next, addr != end);
+}
+
+static int show_smap(struct seq_file *m, void *v)
+{
+ struct vm_area_struct *vma = v;
+ struct mm_struct *mm = vma->vm_mm;
+ struct mem_size_stats mss;
+
+ memset(&mss, 0, sizeof mss);
+
+ if (mm) {
+ spin_lock(&mm->page_table_lock);
+ smaps_pgd_range(vma, vma->vm_start, vma->vm_end, &mss);
+ spin_unlock(&mm->page_table_lock);
+ }
+
+ return show_map_internal(m, v, &mss);
+}
+
static void *m_start(struct seq_file *m, loff_t *pos)
{
struct task_struct *task = m->private;
unsigned long last_addr = m->version;
struct mm_struct *mm;
- struct vm_area_struct *map, *tail_map;
+ struct vm_area_struct *vma, *tail_vma;
loff_t l = *pos;
/*
* We remember last_addr rather than next_addr to hit with
* mmap_cache most of the time. We have zero last_addr at
- * the begining and also after lseek. We will have -1 last_addr
- * after the end of the maps.
+ * the beginning and also after lseek. We will have -1 last_addr
+ * after the end of the vmas.
*/
if (last_addr == -1UL)
@@ -168,47 +304,47 @@ static void *m_start(struct seq_file *m, loff_t *pos)
if (!mm)
return NULL;
- tail_map = get_gate_vma(task);
+ tail_vma = get_gate_vma(task);
down_read(&mm->mmap_sem);
/* Start with last addr hint */
- if (last_addr && (map = find_vma(mm, last_addr))) {
- map = map->vm_next;
+ if (last_addr && (vma = find_vma(mm, last_addr))) {
+ vma = vma->vm_next;
goto out;
}
/*
- * Check the map index is within the range and do
+ * Check the vma index is within the range and do
* sequential scan until m_index.
*/
- map = NULL;
+ vma = NULL;
if ((unsigned long)l < mm->map_count) {
- map = mm->mmap;
- while (l-- && map)
- map = map->vm_next;
+ vma = mm->mmap;
+ while (l-- && vma)
+ vma = vma->vm_next;
goto out;
}
if (l != mm->map_count)
- tail_map = NULL; /* After gate map */
+ tail_vma = NULL; /* After gate vma */
out:
- if (map)
- return map;
+ if (vma)
+ return vma;
- /* End of maps has reached */
- m->version = (tail_map != NULL)? 0: -1UL;
+ /* End of vmas has been reached */
+ m->version = (tail_vma != NULL)? 0: -1UL;
up_read(&mm->mmap_sem);
mmput(mm);
- return tail_map;
+ return tail_vma;
}
static void m_stop(struct seq_file *m, void *v)
{
struct task_struct *task = m->private;
- struct vm_area_struct *map = v;
- if (map && map != get_gate_vma(task)) {
- struct mm_struct *mm = map->vm_mm;
+ struct vm_area_struct *vma = v;
+ if (vma && vma != get_gate_vma(task)) {
+ struct mm_struct *mm = vma->vm_mm;
up_read(&mm->mmap_sem);
mmput(mm);
}
@@ -217,14 +353,14 @@ static void m_stop(struct seq_file *m, void *v)
static void *m_next(struct seq_file *m, void *v, loff_t *pos)
{
struct task_struct *task = m->private;
- struct vm_area_struct *map = v;
- struct vm_area_struct *tail_map = get_gate_vma(task);
+ struct vm_area_struct *vma = v;
+ struct vm_area_struct *tail_vma = get_gate_vma(task);
(*pos)++;
- if (map && (map != tail_map) && map->vm_next)
- return map->vm_next;
+ if (vma && (vma != tail_vma) && vma->vm_next)
+ return vma->vm_next;
m_stop(m, v);
- return (map != tail_map)? tail_map: NULL;
+ return (vma != tail_vma)? tail_vma: NULL;
}
struct seq_operations proc_pid_maps_op = {
@@ -233,3 +369,140 @@ struct seq_operations proc_pid_maps_op = {
.stop = m_stop,
.show = show_map
};
+
+struct seq_operations proc_pid_smaps_op = {
+ .start = m_start,
+ .next = m_next,
+ .stop = m_stop,
+ .show = show_smap
+};
+
+#ifdef CONFIG_NUMA
+
+struct numa_maps {
+ unsigned long pages;
+ unsigned long anon;
+ unsigned long mapped;
+ unsigned long mapcount_max;
+ unsigned long node[MAX_NUMNODES];
+};
+
+/*
+ * Calculate numa node maps for a vma
+ */
+static struct numa_maps *get_numa_maps(const struct vm_area_struct *vma)
+{
+ struct page *page;
+ unsigned long vaddr;
+ struct mm_struct *mm = vma->vm_mm;
+ int i;
+ struct numa_maps *md = kmalloc(sizeof(struct numa_maps), GFP_KERNEL);
+
+ if (!md)
+ return NULL;
+ md->pages = 0;
+ md->anon = 0;
+ md->mapped = 0;
+ md->mapcount_max = 0;
+ for_each_node(i)
+ md->node[i] =0;
+
+ spin_lock(&mm->page_table_lock);
+ for (vaddr = vma->vm_start; vaddr < vma->vm_end; vaddr += PAGE_SIZE) {
+ page = follow_page(mm, vaddr, 0);
+ if (page) {
+ int count = page_mapcount(page);
+
+ if (count)
+ md->mapped++;
+ if (count > md->mapcount_max)
+ md->mapcount_max = count;
+ md->pages++;
+ if (PageAnon(page))
+ md->anon++;
+ md->node[page_to_nid(page)]++;
+ }
+ }
+ spin_unlock(&mm->page_table_lock);
+ return md;
+}
+
+static int show_numa_map(struct seq_file *m, void *v)
+{
+ struct task_struct *task = m->private;
+ struct vm_area_struct *vma = v;
+ struct mempolicy *pol;
+ struct numa_maps *md;
+ struct zone **z;
+ int n;
+ int first;
+
+ if (!vma->vm_mm)
+ return 0;
+
+ md = get_numa_maps(vma);
+ if (!md)
+ return 0;
+
+ seq_printf(m, "%08lx", vma->vm_start);
+ pol = get_vma_policy(task, vma, vma->vm_start);
+ /* Print policy */
+ switch (pol->policy) {
+ case MPOL_PREFERRED:
+ seq_printf(m, " prefer=%d", pol->v.preferred_node);
+ break;
+ case MPOL_BIND:
+ seq_printf(m, " bind={");
+ first = 1;
+ for (z = pol->v.zonelist->zones; *z; z++) {
+
+ if (!first)
+ seq_putc(m, ',');
+ else
+ first = 0;
+ seq_printf(m, "%d/%s", (*z)->zone_pgdat->node_id,
+ (*z)->name);
+ }
+ seq_putc(m, '}');
+ break;
+ case MPOL_INTERLEAVE:
+ seq_printf(m, " interleave={");
+ first = 1;
+ for_each_node(n) {
+ if (test_bit(n, pol->v.nodes)) {
+ if (!first)
+ seq_putc(m,',');
+ else
+ first = 0;
+ seq_printf(m, "%d",n);
+ }
+ }
+ seq_putc(m, '}');
+ break;
+ default:
+ seq_printf(m," default");
+ break;
+ }
+ seq_printf(m, " MaxRef=%lu Pages=%lu Mapped=%lu",
+ md->mapcount_max, md->pages, md->mapped);
+ if (md->anon)
+ seq_printf(m," Anon=%lu",md->anon);
+
+ for_each_online_node(n) {
+ if (md->node[n])
+ seq_printf(m, " N%d=%lu", n, md->node[n]);
+ }
+ seq_putc(m, '\n');
+ kfree(md);
+ if (m->count < m->size) /* vma is copied successfully */
+ m->version = (vma != get_gate_vma(task)) ? vma->vm_start : 0;
+ return 0;
+}
+
+struct seq_operations proc_pid_numa_maps_op = {
+ .start = m_start,
+ .next = m_next,
+ .stop = m_stop,
+ .show = show_numa_map
+};
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-13 23:06:29 +0000