aboutsummaryrefslogtreecommitdiff
path: root/fs/proc
diff options
context:
space:
mode:
Diffstat (limited to 'fs/proc')
-rw-r--r--fs/proc/base.c25
-rw-r--r--fs/proc/generic.c2
-rw-r--r--fs/proc/inode.c2
-rw-r--r--fs/proc/meminfo.c7
-rw-r--r--fs/proc/proc_sysctl.c48
-rw-r--r--fs/proc/root.c8
-rw-r--r--fs/proc/stat.c41
-rw-r--r--fs/proc/task_mmu.c5
-rw-r--r--fs/proc/vmcore.c1
9 files changed, 102 insertions, 37 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 5eb02069e1b..851ba3dcdc2 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1107,13 +1107,6 @@ static ssize_t oom_adjust_write(struct file *file, const char __user *buf,
goto err_sighand;
}
- if (oom_adjust != task->signal->oom_adj) {
- if (oom_adjust == OOM_DISABLE)
- atomic_inc(&task->mm->oom_disable_count);
- if (task->signal->oom_adj == OOM_DISABLE)
- atomic_dec(&task->mm->oom_disable_count);
- }
-
/*
* Warn that /proc/pid/oom_adj is deprecated, see
* Documentation/feature-removal-schedule.txt.
@@ -1215,12 +1208,6 @@ static ssize_t oom_score_adj_write(struct file *file, const char __user *buf,
goto err_sighand;
}
- if (oom_score_adj != task->signal->oom_score_adj) {
- if (oom_score_adj == OOM_SCORE_ADJ_MIN)
- atomic_inc(&task->mm->oom_disable_count);
- if (task->signal->oom_score_adj == OOM_SCORE_ADJ_MIN)
- atomic_dec(&task->mm->oom_disable_count);
- }
task->signal->oom_score_adj = oom_score_adj;
if (has_capability_noaudit(current, CAP_SYS_RESOURCE))
task->signal->oom_score_adj_min = oom_score_adj;
@@ -2261,7 +2248,7 @@ static struct dentry *proc_pident_instantiate(struct inode *dir,
ei = PROC_I(inode);
inode->i_mode = p->mode;
if (S_ISDIR(inode->i_mode))
- inode->i_nlink = 2; /* Use getattr to fix if necessary */
+ set_nlink(inode, 2); /* Use getattr to fix if necessary */
if (p->iop)
inode->i_op = p->iop;
if (p->fop)
@@ -2655,7 +2642,7 @@ static struct dentry *proc_base_instantiate(struct inode *dir,
inode->i_mode = p->mode;
if (S_ISDIR(inode->i_mode))
- inode->i_nlink = 2;
+ set_nlink(inode, 2);
if (S_ISLNK(inode->i_mode))
inode->i_size = 64;
if (p->iop)
@@ -2994,8 +2981,8 @@ static struct dentry *proc_pid_instantiate(struct inode *dir,
inode->i_fop = &proc_tgid_base_operations;
inode->i_flags|=S_IMMUTABLE;
- inode->i_nlink = 2 + pid_entry_count_dirs(tgid_base_stuff,
- ARRAY_SIZE(tgid_base_stuff));
+ set_nlink(inode, 2 + pid_entry_count_dirs(tgid_base_stuff,
+ ARRAY_SIZE(tgid_base_stuff)));
d_set_d_op(dentry, &pid_dentry_operations);
@@ -3246,8 +3233,8 @@ static struct dentry *proc_task_instantiate(struct inode *dir,
inode->i_fop = &proc_tid_base_operations;
inode->i_flags|=S_IMMUTABLE;
- inode->i_nlink = 2 + pid_entry_count_dirs(tid_base_stuff,
- ARRAY_SIZE(tid_base_stuff));
+ set_nlink(inode, 2 + pid_entry_count_dirs(tid_base_stuff,
+ ARRAY_SIZE(tid_base_stuff)));
d_set_d_op(dentry, &pid_dentry_operations);
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 9d99131d0d6..10090d9c7ad 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -283,7 +283,7 @@ static int proc_getattr(struct vfsmount *mnt, struct dentry *dentry,
struct inode *inode = dentry->d_inode;
struct proc_dir_entry *de = PROC_I(inode)->pde;
if (de && de->nlink)
- inode->i_nlink = de->nlink;
+ set_nlink(inode, de->nlink);
generic_fillattr(inode, stat);
return 0;
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 7ed72d6c1c6..7737c5468a4 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -445,7 +445,7 @@ struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de)
if (de->size)
inode->i_size = de->size;
if (de->nlink)
- inode->i_nlink = de->nlink;
+ set_nlink(inode, de->nlink);
if (de->proc_iops)
inode->i_op = de->proc_iops;
if (de->proc_fops) {
diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
index 586174168e2..80e4645f799 100644
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -131,12 +131,13 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
K(i.freeswap),
K(global_page_state(NR_FILE_DIRTY)),
K(global_page_state(NR_WRITEBACK)),
- K(global_page_state(NR_ANON_PAGES)
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+ K(global_page_state(NR_ANON_PAGES)
+ global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *
- HPAGE_PMD_NR
+ HPAGE_PMD_NR),
+#else
+ K(global_page_state(NR_ANON_PAGES)),
#endif
- ),
K(global_page_state(NR_FILE_MAPPED)),
K(global_page_state(NR_SHMEM)),
K(global_page_state(NR_SLAB_RECLAIMABLE) +
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 1a77dbef226..a6b62173d4c 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -3,6 +3,7 @@
*/
#include <linux/init.h>
#include <linux/sysctl.h>
+#include <linux/poll.h>
#include <linux/proc_fs.h>
#include <linux/security.h>
#include <linux/namei.h>
@@ -14,6 +15,15 @@ static const struct inode_operations proc_sys_inode_operations;
static const struct file_operations proc_sys_dir_file_operations;
static const struct inode_operations proc_sys_dir_operations;
+void proc_sys_poll_notify(struct ctl_table_poll *poll)
+{
+ if (!poll)
+ return;
+
+ atomic_inc(&poll->event);
+ wake_up_interruptible(&poll->wait);
+}
+
static struct inode *proc_sys_make_inode(struct super_block *sb,
struct ctl_table_header *head, struct ctl_table *table)
{
@@ -39,7 +49,7 @@ static struct inode *proc_sys_make_inode(struct super_block *sb,
inode->i_fop = &proc_sys_file_operations;
} else {
inode->i_mode |= S_IFDIR;
- inode->i_nlink = 0;
+ clear_nlink(inode);
inode->i_op = &proc_sys_dir_operations;
inode->i_fop = &proc_sys_dir_file_operations;
}
@@ -176,6 +186,39 @@ static ssize_t proc_sys_write(struct file *filp, const char __user *buf,
return proc_sys_call_handler(filp, (void __user *)buf, count, ppos, 1);
}
+static int proc_sys_open(struct inode *inode, struct file *filp)
+{
+ struct ctl_table *table = PROC_I(inode)->sysctl_entry;
+
+ if (table->poll)
+ filp->private_data = proc_sys_poll_event(table->poll);
+
+ return 0;
+}
+
+static unsigned int proc_sys_poll(struct file *filp, poll_table *wait)
+{
+ struct inode *inode = filp->f_path.dentry->d_inode;
+ struct ctl_table *table = PROC_I(inode)->sysctl_entry;
+ unsigned long event = (unsigned long)filp->private_data;
+ unsigned int ret = DEFAULT_POLLMASK;
+
+ if (!table->proc_handler)
+ goto out;
+
+ if (!table->poll)
+ goto out;
+
+ poll_wait(filp, &table->poll->wait, wait);
+
+ if (event != atomic_read(&table->poll->event)) {
+ filp->private_data = proc_sys_poll_event(table->poll);
+ ret = POLLIN | POLLRDNORM | POLLERR | POLLPRI;
+ }
+
+out:
+ return ret;
+}
static int proc_sys_fill_cache(struct file *filp, void *dirent,
filldir_t filldir,
@@ -364,12 +407,15 @@ static int proc_sys_getattr(struct vfsmount *mnt, struct dentry *dentry, struct
}
static const struct file_operations proc_sys_file_operations = {
+ .open = proc_sys_open,
+ .poll = proc_sys_poll,
.read = proc_sys_read,
.write = proc_sys_write,
.llseek = default_llseek,
};
static const struct file_operations proc_sys_dir_file_operations = {
+ .read = generic_read_dir,
.readdir = proc_sys_readdir,
.llseek = generic_file_llseek,
};
diff --git a/fs/proc/root.c b/fs/proc/root.c
index 9a8a2b77b87..03102d97818 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -91,20 +91,18 @@ static struct file_system_type proc_fs_type = {
void __init proc_root_init(void)
{
- struct vfsmount *mnt;
int err;
proc_init_inodecache();
err = register_filesystem(&proc_fs_type);
if (err)
return;
- mnt = kern_mount_data(&proc_fs_type, &init_pid_ns);
- if (IS_ERR(mnt)) {
+ err = pid_ns_prepare_proc(&init_pid_ns);
+ if (err) {
unregister_filesystem(&proc_fs_type);
return;
}
- init_pid_ns.proc_mnt = mnt;
proc_symlink("mounts", NULL, "self/mounts");
proc_net_init();
@@ -209,5 +207,5 @@ int pid_ns_prepare_proc(struct pid_namespace *ns)
void pid_ns_release_proc(struct pid_namespace *ns)
{
- mntput(ns->proc_mnt);
+ kern_unmount(ns->proc_mnt);
}
diff --git a/fs/proc/stat.c b/fs/proc/stat.c
index 9758b654a1b..0855e6f2039 100644
--- a/fs/proc/stat.c
+++ b/fs/proc/stat.c
@@ -10,6 +10,7 @@
#include <linux/time.h>
#include <linux/irqnr.h>
#include <asm/cputime.h>
+#include <linux/tick.h>
#ifndef arch_irq_stat_cpu
#define arch_irq_stat_cpu(cpu) 0
@@ -21,6 +22,35 @@
#define arch_idle_time(cpu) 0
#endif
+static cputime64_t get_idle_time(int cpu)
+{
+ u64 idle_time = get_cpu_idle_time_us(cpu, NULL);
+ cputime64_t idle;
+
+ if (idle_time == -1ULL) {
+ /* !NO_HZ so we can rely on cpustat.idle */
+ idle = kstat_cpu(cpu).cpustat.idle;
+ idle = cputime64_add(idle, arch_idle_time(cpu));
+ } else
+ idle = usecs_to_cputime64(idle_time);
+
+ return idle;
+}
+
+static cputime64_t get_iowait_time(int cpu)
+{
+ u64 iowait_time = get_cpu_iowait_time_us(cpu, NULL);
+ cputime64_t iowait;
+
+ if (iowait_time == -1ULL)
+ /* !NO_HZ so we can rely on cpustat.iowait */
+ iowait = kstat_cpu(cpu).cpustat.iowait;
+ else
+ iowait = usecs_to_cputime64(iowait_time);
+
+ return iowait;
+}
+
static int show_stat(struct seq_file *p, void *v)
{
int i, j;
@@ -42,9 +72,8 @@ static int show_stat(struct seq_file *p, void *v)
user = cputime64_add(user, kstat_cpu(i).cpustat.user);
nice = cputime64_add(nice, kstat_cpu(i).cpustat.nice);
system = cputime64_add(system, kstat_cpu(i).cpustat.system);
- idle = cputime64_add(idle, kstat_cpu(i).cpustat.idle);
- idle = cputime64_add(idle, arch_idle_time(i));
- iowait = cputime64_add(iowait, kstat_cpu(i).cpustat.iowait);
+ idle = cputime64_add(idle, get_idle_time(i));
+ iowait = cputime64_add(iowait, get_iowait_time(i));
irq = cputime64_add(irq, kstat_cpu(i).cpustat.irq);
softirq = cputime64_add(softirq, kstat_cpu(i).cpustat.softirq);
steal = cputime64_add(steal, kstat_cpu(i).cpustat.steal);
@@ -76,14 +105,12 @@ static int show_stat(struct seq_file *p, void *v)
(unsigned long long)cputime64_to_clock_t(guest),
(unsigned long long)cputime64_to_clock_t(guest_nice));
for_each_online_cpu(i) {
-
/* Copy values here to work around gcc-2.95.3, gcc-2.96 */
user = kstat_cpu(i).cpustat.user;
nice = kstat_cpu(i).cpustat.nice;
system = kstat_cpu(i).cpustat.system;
- idle = kstat_cpu(i).cpustat.idle;
- idle = cputime64_add(idle, arch_idle_time(i));
- iowait = kstat_cpu(i).cpustat.iowait;
+ idle = get_idle_time(i);
+ iowait = get_iowait_time(i);
irq = kstat_cpu(i).cpustat.irq;
softirq = kstat_cpu(i).cpustat.softirq;
steal = kstat_cpu(i).cpustat.steal;
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 5afaa58a863..e418c5abdb0 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -44,6 +44,7 @@ void task_mem(struct seq_file *m, struct mm_struct *mm)
"VmPeak:\t%8lu kB\n"
"VmSize:\t%8lu kB\n"
"VmLck:\t%8lu kB\n"
+ "VmPin:\t%8lu kB\n"
"VmHWM:\t%8lu kB\n"
"VmRSS:\t%8lu kB\n"
"VmData:\t%8lu kB\n"
@@ -55,6 +56,7 @@ void task_mem(struct seq_file *m, struct mm_struct *mm)
hiwater_vm << (PAGE_SHIFT-10),
(total_vm - mm->reserved_vm) << (PAGE_SHIFT-10),
mm->locked_vm << (PAGE_SHIFT-10),
+ mm->pinned_vm << (PAGE_SHIFT-10),
hiwater_rss << (PAGE_SHIFT-10),
total_rss << (PAGE_SHIFT-10),
data << (PAGE_SHIFT-10),
@@ -1039,6 +1041,9 @@ static int show_numa_map(struct seq_file *m, void *v)
seq_printf(m, " stack");
}
+ if (is_vm_hugetlb_page(vma))
+ seq_printf(m, " huge");
+
walk_page_range(vma->vm_start, vma->vm_end, &walk);
if (!md->pages)
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index cd99bf55765..b0f450a2bb7 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -12,6 +12,7 @@
#include <linux/user.h>
#include <linux/elf.h>
#include <linux/elfcore.h>
+#include <linux/export.h>
#include <linux/slab.h>
#include <linux/highmem.h>
#include <linux/bootmem.h>
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-01 09:01:28 +0000