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-rw-r--r--fs/proc/array.c189
-rw-r--r--fs/proc/base.c223
-rw-r--r--fs/proc/internal.h4
-rw-r--r--fs/proc/stat.c49
-rw-r--r--fs/proc/task_mmu.c423
5 files changed, 705 insertions, 183 deletions
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 6238f45eed02..c4478abd1bef 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -169,51 +169,45 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
task_unlock(p);
rcu_read_unlock();
- seq_printf(m,
- "State:\t%s\n"
- "Tgid:\t%d\n"
- "Ngid:\t%d\n"
- "Pid:\t%d\n"
- "PPid:\t%d\n"
- "TracerPid:\t%d\n"
- "Uid:\t%d\t%d\t%d\t%d\n"
- "Gid:\t%d\t%d\t%d\t%d\n"
- "FDSize:\t%d\nGroups:\t",
- get_task_state(p),
- tgid, ngid, pid_nr_ns(pid, ns), ppid, tpid,
- from_kuid_munged(user_ns, cred->uid),
- from_kuid_munged(user_ns, cred->euid),
- from_kuid_munged(user_ns, cred->suid),
- from_kuid_munged(user_ns, cred->fsuid),
- from_kgid_munged(user_ns, cred->gid),
- from_kgid_munged(user_ns, cred->egid),
- from_kgid_munged(user_ns, cred->sgid),
- from_kgid_munged(user_ns, cred->fsgid),
- max_fds);
-
+ seq_printf(m, "State:\t%s", get_task_state(p));
+
+ seq_put_decimal_ull(m, "\nTgid:\t", tgid);
+ seq_put_decimal_ull(m, "\nPid:\t", pid_nr_ns(pid, ns));
+ seq_put_decimal_ull(m, "\nPPid:\t", ppid);
+ seq_put_decimal_ull(m, "\nTracerPid:\t", tpid);
+ seq_put_decimal_ull(m, "\nUid:\t", from_kuid_munged(user_ns, cred->uid));
+ seq_put_decimal_ull(m, "\t", from_kuid_munged(user_ns, cred->euid));
+ seq_put_decimal_ull(m, "\t", from_kuid_munged(user_ns, cred->suid));
+ seq_put_decimal_ull(m, "\t", from_kuid_munged(user_ns, cred->fsuid));
+ seq_put_decimal_ull(m, "\nGid:\t", from_kgid_munged(user_ns, cred->gid));
+ seq_put_decimal_ull(m, "\t", from_kgid_munged(user_ns, cred->egid));
+ seq_put_decimal_ull(m, "\t", from_kgid_munged(user_ns, cred->sgid));
+ seq_put_decimal_ull(m, "\t", from_kgid_munged(user_ns, cred->fsgid));
+ seq_put_decimal_ull(m, "\nNgid:\t", ngid);
+ seq_put_decimal_ull(m, "\nFDSize:\t", max_fds);
+
+ seq_puts(m, "\nGroups:\t");
group_info = cred->group_info;
for (g = 0; g < group_info->ngroups; g++)
- seq_printf(m, "%d ",
- from_kgid_munged(user_ns, GROUP_AT(group_info, g)));
+ seq_put_decimal_ull(m, g ? " " : "",
+ from_kgid_munged(user_ns, GROUP_AT(group_info, g)));
put_cred(cred);
+ /* Trailing space shouldn't have been added in the first place. */
+ seq_putc(m, ' ');
#ifdef CONFIG_PID_NS
seq_puts(m, "\nNStgid:");
for (g = ns->level; g <= pid->level; g++)
- seq_printf(m, "\t%d",
- task_tgid_nr_ns(p, pid->numbers[g].ns));
+ seq_put_decimal_ull(m, "\t", task_tgid_nr_ns(p, pid->numbers[g].ns));
seq_puts(m, "\nNSpid:");
for (g = ns->level; g <= pid->level; g++)
- seq_printf(m, "\t%d",
- task_pid_nr_ns(p, pid->numbers[g].ns));
+ seq_put_decimal_ull(m, "\t", task_pid_nr_ns(p, pid->numbers[g].ns));
seq_puts(m, "\nNSpgid:");
for (g = ns->level; g <= pid->level; g++)
- seq_printf(m, "\t%d",
- task_pgrp_nr_ns(p, pid->numbers[g].ns));
+ seq_put_decimal_ull(m, "\t", task_pgrp_nr_ns(p, pid->numbers[g].ns));
seq_puts(m, "\nNSsid:");
for (g = ns->level; g <= pid->level; g++)
- seq_printf(m, "\t%d",
- task_session_nr_ns(p, pid->numbers[g].ns));
+ seq_put_decimal_ull(m, "\t", task_session_nr_ns(p, pid->numbers[g].ns));
#endif
seq_putc(m, '\n');
}
@@ -282,11 +276,12 @@ static inline void task_sig(struct seq_file *m, struct task_struct *p)
unlock_task_sighand(p, &flags);
}
- seq_printf(m, "Threads:\t%d\n", num_threads);
- seq_printf(m, "SigQ:\t%lu/%lu\n", qsize, qlim);
+ seq_put_decimal_ull(m, "Threads:\t", num_threads);
+ seq_put_decimal_ull(m, "\nSigQ:\t", qsize);
+ seq_put_decimal_ull(m, "/", qlim);
/* render them all */
- render_sigset_t(m, "SigPnd:\t", &pending);
+ render_sigset_t(m, "\nSigPnd:\t", &pending);
render_sigset_t(m, "ShdPnd:\t", &shpending);
render_sigset_t(m, "SigBlk:\t", &blocked);
render_sigset_t(m, "SigIgn:\t", &ignored);
@@ -331,7 +326,8 @@ static inline void task_cap(struct seq_file *m, struct task_struct *p)
static inline void task_seccomp(struct seq_file *m, struct task_struct *p)
{
#ifdef CONFIG_SECCOMP
- seq_printf(m, "Seccomp:\t%d\n", p->seccomp.mode);
+ seq_put_decimal_ull(m, "Seccomp:\t", p->seccomp.mode);
+ seq_putc(m, '\n');
#endif
seq_printf(m, "Speculation_Store_Bypass:\t");
switch (arch_prctl_spec_ctrl_get(p, PR_SPEC_STORE_BYPASS)) {
@@ -363,10 +359,9 @@ static inline void task_seccomp(struct seq_file *m, struct task_struct *p)
static inline void task_context_switch_counts(struct seq_file *m,
struct task_struct *p)
{
- seq_printf(m, "voluntary_ctxt_switches:\t%lu\n"
- "nonvoluntary_ctxt_switches:\t%lu\n",
- p->nvcsw,
- p->nivcsw);
+ seq_put_decimal_ull(m, "voluntary_ctxt_switches:\t", p->nvcsw);
+ seq_put_decimal_ull(m, "\nnonvoluntary_ctxt_switches:\t", p->nivcsw);
+ seq_putc(m, '\n');
}
static void task_cpus_allowed(struct seq_file *m, struct task_struct *task)
@@ -510,41 +505,41 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
start_time = nsec_to_clock_t(task->real_start_time);
seq_printf(m, "%d (%s) %c", pid_nr_ns(pid, ns), tcomm, state);
- seq_put_decimal_ll(m, ' ', ppid);
- seq_put_decimal_ll(m, ' ', pgid);
- seq_put_decimal_ll(m, ' ', sid);
- seq_put_decimal_ll(m, ' ', tty_nr);
- seq_put_decimal_ll(m, ' ', tty_pgrp);
- seq_put_decimal_ull(m, ' ', task->flags);
- seq_put_decimal_ull(m, ' ', min_flt);
- seq_put_decimal_ull(m, ' ', cmin_flt);
- seq_put_decimal_ull(m, ' ', maj_flt);
- seq_put_decimal_ull(m, ' ', cmaj_flt);
- seq_put_decimal_ull(m, ' ', cputime_to_clock_t(utime));
- seq_put_decimal_ull(m, ' ', cputime_to_clock_t(stime));
- seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cutime));
- seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cstime));
- seq_put_decimal_ll(m, ' ', priority);
- seq_put_decimal_ll(m, ' ', nice);
- seq_put_decimal_ll(m, ' ', num_threads);
- seq_put_decimal_ull(m, ' ', 0);
- seq_put_decimal_ull(m, ' ', start_time);
- seq_put_decimal_ull(m, ' ', vsize);
- seq_put_decimal_ull(m, ' ', mm ? get_mm_rss(mm) : 0);
- seq_put_decimal_ull(m, ' ', rsslim);
- seq_put_decimal_ull(m, ' ', mm ? (permitted ? mm->start_code : 1) : 0);
- seq_put_decimal_ull(m, ' ', mm ? (permitted ? mm->end_code : 1) : 0);
- seq_put_decimal_ull(m, ' ', (permitted && mm) ? mm->start_stack : 0);
- seq_put_decimal_ull(m, ' ', esp);
- seq_put_decimal_ull(m, ' ', eip);
+ seq_put_decimal_ll(m, " ", ppid);
+ seq_put_decimal_ll(m, " ", pgid);
+ seq_put_decimal_ll(m, " ", sid);
+ seq_put_decimal_ll(m, " ", tty_nr);
+ seq_put_decimal_ll(m, " ", tty_pgrp);
+ seq_put_decimal_ull(m, " ", task->flags);
+ seq_put_decimal_ull(m, " ", min_flt);
+ seq_put_decimal_ull(m, " ", cmin_flt);
+ seq_put_decimal_ull(m, " ", maj_flt);
+ seq_put_decimal_ull(m, " ", cmaj_flt);
+ seq_put_decimal_ull(m, " ", cputime_to_clock_t(utime));
+ seq_put_decimal_ull(m, " ", cputime_to_clock_t(stime));
+ seq_put_decimal_ll(m, " ", cputime_to_clock_t(cutime));
+ seq_put_decimal_ll(m, " ", cputime_to_clock_t(cstime));
+ seq_put_decimal_ll(m, " ", priority);
+ seq_put_decimal_ll(m, " ", nice);
+ seq_put_decimal_ll(m, " ", num_threads);
+ seq_put_decimal_ull(m, " ", 0);
+ seq_put_decimal_ull(m, " ", start_time);
+ seq_put_decimal_ull(m, " ", vsize);
+ seq_put_decimal_ull(m, " ", mm ? get_mm_rss(mm) : 0);
+ seq_put_decimal_ull(m, " ", rsslim);
+ seq_put_decimal_ull(m, " ", mm ? (permitted ? mm->start_code : 1) : 0);
+ seq_put_decimal_ull(m, " ", mm ? (permitted ? mm->end_code : 1) : 0);
+ seq_put_decimal_ull(m, " ", (permitted && mm) ? mm->start_stack : 0);
+ seq_put_decimal_ull(m, " ", esp);
+ seq_put_decimal_ull(m, " ", eip);
/* The signal information here is obsolete.
* It must be decimal for Linux 2.0 compatibility.
* Use /proc/#/status for real-time signals.
*/
- seq_put_decimal_ull(m, ' ', task->pending.signal.sig[0] & 0x7fffffffUL);
- seq_put_decimal_ull(m, ' ', task->blocked.sig[0] & 0x7fffffffUL);
- seq_put_decimal_ull(m, ' ', sigign.sig[0] & 0x7fffffffUL);
- seq_put_decimal_ull(m, ' ', sigcatch.sig[0] & 0x7fffffffUL);
+ seq_put_decimal_ull(m, " ", task->pending.signal.sig[0] & 0x7fffffffUL);
+ seq_put_decimal_ull(m, " ", task->blocked.sig[0] & 0x7fffffffUL);
+ seq_put_decimal_ull(m, " ", sigign.sig[0] & 0x7fffffffUL);
+ seq_put_decimal_ull(m, " ", sigcatch.sig[0] & 0x7fffffffUL);
/*
* We used to output the absolute kernel address, but that's an
@@ -558,31 +553,31 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
else
seq_puts(m, " 0");
- seq_put_decimal_ull(m, ' ', 0);
- seq_put_decimal_ull(m, ' ', 0);
- seq_put_decimal_ll(m, ' ', task->exit_signal);
- seq_put_decimal_ll(m, ' ', task_cpu(task));
- seq_put_decimal_ull(m, ' ', task->rt_priority);
- seq_put_decimal_ull(m, ' ', task->policy);
- seq_put_decimal_ull(m, ' ', delayacct_blkio_ticks(task));
- seq_put_decimal_ull(m, ' ', cputime_to_clock_t(gtime));
- seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cgtime));
+ seq_put_decimal_ull(m, " ", 0);
+ seq_put_decimal_ull(m, " ", 0);
+ seq_put_decimal_ll(m, " ", task->exit_signal);
+ seq_put_decimal_ll(m, " ", task_cpu(task));
+ seq_put_decimal_ull(m, " ", task->rt_priority);
+ seq_put_decimal_ull(m, " ", task->policy);
+ seq_put_decimal_ull(m, " ", delayacct_blkio_ticks(task));
+ seq_put_decimal_ull(m, " ", cputime_to_clock_t(gtime));
+ seq_put_decimal_ll(m, " ", cputime_to_clock_t(cgtime));
if (mm && permitted) {
- seq_put_decimal_ull(m, ' ', mm->start_data);
- seq_put_decimal_ull(m, ' ', mm->end_data);
- seq_put_decimal_ull(m, ' ', mm->start_brk);
- seq_put_decimal_ull(m, ' ', mm->arg_start);
- seq_put_decimal_ull(m, ' ', mm->arg_end);
- seq_put_decimal_ull(m, ' ', mm->env_start);
- seq_put_decimal_ull(m, ' ', mm->env_end);
+ seq_put_decimal_ull(m, " ", mm->start_data);
+ seq_put_decimal_ull(m, " ", mm->end_data);
+ seq_put_decimal_ull(m, " ", mm->start_brk);
+ seq_put_decimal_ull(m, " ", mm->arg_start);
+ seq_put_decimal_ull(m, " ", mm->arg_end);
+ seq_put_decimal_ull(m, " ", mm->env_start);
+ seq_put_decimal_ull(m, " ", mm->env_end);
} else
- seq_printf(m, " 0 0 0 0 0 0 0");
+ seq_puts(m, " 0 0 0 0 0 0 0");
if (permitted)
- seq_put_decimal_ll(m, ' ', task->exit_code);
+ seq_put_decimal_ll(m, " ", task->exit_code);
else
- seq_put_decimal_ll(m, ' ', 0);
+ seq_puts(m, " 0");
seq_putc(m, '\n');
if (mm)
@@ -618,13 +613,13 @@ int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
* seq_printf(m, "%lu %lu %lu %lu 0 %lu 0\n",
* size, resident, shared, text, data);
*/
- seq_put_decimal_ull(m, 0, size);
- seq_put_decimal_ull(m, ' ', resident);
- seq_put_decimal_ull(m, ' ', shared);
- seq_put_decimal_ull(m, ' ', text);
- seq_put_decimal_ull(m, ' ', 0);
- seq_put_decimal_ull(m, ' ', data);
- seq_put_decimal_ull(m, ' ', 0);
+ seq_put_decimal_ull(m, "", size);
+ seq_put_decimal_ull(m, " ", resident);
+ seq_put_decimal_ull(m, " ", shared);
+ seq_put_decimal_ull(m, " ", text);
+ seq_put_decimal_ull(m, " ", 0);
+ seq_put_decimal_ull(m, " ", data);
+ seq_put_decimal_ull(m, " ", 0);
seq_putc(m, '\n');
return 0;
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 91d58005d9b9..8da1fc940a86 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1047,15 +1047,20 @@ static ssize_t oom_adj_read(struct file *file, char __user *buf, size_t count,
int oom_adj = OOM_ADJUST_MIN;
size_t len;
unsigned long flags;
+ int mult = 1;
if (!task)
return -ESRCH;
if (lock_task_sighand(task, &flags)) {
- if (task->signal->oom_score_adj == OOM_SCORE_ADJ_MAX)
+ if (task->signal->oom_score_adj == OOM_SCORE_ADJ_MAX) {
oom_adj = OOM_ADJUST_MAX;
- else
- oom_adj = (task->signal->oom_score_adj * -OOM_DISABLE) /
- OOM_SCORE_ADJ_MAX;
+ } else {
+ if (task->signal->oom_score_adj < 0)
+ mult = -1;
+ oom_adj = roundup(mult * task->signal->oom_score_adj *
+ -OOM_DISABLE, OOM_SCORE_ADJ_MAX) /
+ OOM_SCORE_ADJ_MAX * mult;
+ }
unlock_task_sighand(task, &flags);
}
put_task_struct(task);
@@ -1439,6 +1444,204 @@ static const struct file_operations proc_pid_sched_operations = {
#endif
+/*
+ * Print out various scheduling related per-task fields:
+ */
+
+#ifdef CONFIG_SMP
+
+static int sched_wake_up_idle_show(struct seq_file *m, void *v)
+{
+ struct inode *inode = m->private;
+ struct task_struct *p;
+
+ p = get_proc_task(inode);
+ if (!p)
+ return -ESRCH;
+
+ seq_printf(m, "%d\n", sched_get_wake_up_idle(p));
+
+ put_task_struct(p);
+
+ return 0;
+}
+
+static ssize_t
+sched_wake_up_idle_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *offset)
+{
+ struct inode *inode = file_inode(file);
+ struct task_struct *p;
+ char buffer[PROC_NUMBUF];
+ int wake_up_idle, err;
+
+ memset(buffer, 0, sizeof(buffer));
+ if (count > sizeof(buffer) - 1)
+ count = sizeof(buffer) - 1;
+ if (copy_from_user(buffer, buf, count)) {
+ err = -EFAULT;
+ goto out;
+ }
+
+ err = kstrtoint(strstrip(buffer), 0, &wake_up_idle);
+ if (err)
+ goto out;
+
+ p = get_proc_task(inode);
+ if (!p)
+ return -ESRCH;
+
+ err = sched_set_wake_up_idle(p, wake_up_idle);
+
+ put_task_struct(p);
+
+out:
+ return err < 0 ? err : count;
+}
+
+static int sched_wake_up_idle_open(struct inode *inode, struct file *filp)
+{
+ return single_open(filp, sched_wake_up_idle_show, inode);
+}
+
+static const struct file_operations proc_pid_sched_wake_up_idle_operations = {
+ .open = sched_wake_up_idle_open,
+ .read = seq_read,
+ .write = sched_wake_up_idle_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+#endif /* CONFIG_SMP */
+
+#ifdef CONFIG_SCHED_HMP
+
+static int sched_init_task_load_show(struct seq_file *m, void *v)
+{
+ struct inode *inode = m->private;
+ struct task_struct *p;
+
+ p = get_proc_task(inode);
+ if (!p)
+ return -ESRCH;
+
+ seq_printf(m, "%d\n", sched_get_init_task_load(p));
+
+ put_task_struct(p);
+
+ return 0;
+}
+
+static ssize_t
+sched_init_task_load_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *offset)
+{
+ struct inode *inode = file_inode(file);
+ struct task_struct *p;
+ char buffer[PROC_NUMBUF];
+ int init_task_load, err;
+
+ memset(buffer, 0, sizeof(buffer));
+ if (count > sizeof(buffer) - 1)
+ count = sizeof(buffer) - 1;
+ if (copy_from_user(buffer, buf, count)) {
+ err = -EFAULT;
+ goto out;
+ }
+
+ err = kstrtoint(strstrip(buffer), 0, &init_task_load);
+ if (err)
+ goto out;
+
+ p = get_proc_task(inode);
+ if (!p)
+ return -ESRCH;
+
+ err = sched_set_init_task_load(p, init_task_load);
+
+ put_task_struct(p);
+
+out:
+ return err < 0 ? err : count;
+}
+
+static int sched_init_task_load_open(struct inode *inode, struct file *filp)
+{
+ return single_open(filp, sched_init_task_load_show, inode);
+}
+
+static const struct file_operations proc_pid_sched_init_task_load_operations = {
+ .open = sched_init_task_load_open,
+ .read = seq_read,
+ .write = sched_init_task_load_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int sched_group_id_show(struct seq_file *m, void *v)
+{
+ struct inode *inode = m->private;
+ struct task_struct *p;
+
+ p = get_proc_task(inode);
+ if (!p)
+ return -ESRCH;
+
+ seq_printf(m, "%d\n", sched_get_group_id(p));
+
+ put_task_struct(p);
+
+ return 0;
+}
+
+static ssize_t
+sched_group_id_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *offset)
+{
+ struct inode *inode = file_inode(file);
+ struct task_struct *p;
+ char buffer[PROC_NUMBUF];
+ int group_id, err;
+
+ memset(buffer, 0, sizeof(buffer));
+ if (count > sizeof(buffer) - 1)
+ count = sizeof(buffer) - 1;
+ if (copy_from_user(buffer, buf, count)) {
+ err = -EFAULT;
+ goto out;
+ }
+
+ err = kstrtoint(strstrip(buffer), 0, &group_id);
+ if (err)
+ goto out;
+
+ p = get_proc_task(inode);
+ if (!p)
+ return -ESRCH;
+
+ err = sched_set_group_id(p, group_id);
+
+ put_task_struct(p);
+
+out:
+ return err < 0 ? err : count;
+}
+
+static int sched_group_id_open(struct inode *inode, struct file *filp)
+{
+ return single_open(filp, sched_group_id_show, inode);
+}
+
+static const struct file_operations proc_pid_sched_group_id_operations = {
+ .open = sched_group_id_open,
+ .read = seq_read,
+ .write = sched_group_id_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+#endif /* CONFIG_SCHED_HMP */
+
#ifdef CONFIG_SCHED_AUTOGROUP
/*
* Print out autogroup related information:
@@ -2892,6 +3095,13 @@ static const struct pid_entry tgid_base_stuff[] = {
ONE("status", S_IRUGO, proc_pid_status),
ONE("personality", S_IRUSR, proc_pid_personality),
ONE("limits", S_IRUGO, proc_pid_limits),
+#ifdef CONFIG_SMP
+ REG("sched_wake_up_idle", S_IRUGO|S_IWUSR, proc_pid_sched_wake_up_idle_operations),
+#endif
+#ifdef CONFIG_SCHED_HMP
+ REG("sched_init_task_load", S_IRUGO|S_IWUSR, proc_pid_sched_init_task_load_operations),
+ REG("sched_group_id", S_IRUGO|S_IWUGO, proc_pid_sched_group_id_operations),
+#endif
#ifdef CONFIG_SCHED_DEBUG
REG("sched", S_IRUGO|S_IWUSR, proc_pid_sched_operations),
#endif
@@ -2916,9 +3126,13 @@ static const struct pid_entry tgid_base_stuff[] = {
REG("mounts", S_IRUGO, proc_mounts_operations),
REG("mountinfo", S_IRUGO, proc_mountinfo_operations),
REG("mountstats", S_IRUSR, proc_mountstats_operations),
+#ifdef CONFIG_PROCESS_RECLAIM
+ REG("reclaim", S_IWUSR, proc_reclaim_operations),
+#endif
#ifdef CONFIG_PROC_PAGE_MONITOR
REG("clear_refs", S_IWUSR, proc_clear_refs_operations),
REG("smaps", S_IRUGO, proc_pid_smaps_operations),
+ REG("smaps_rollup", S_IRUGO, proc_pid_smaps_rollup_operations),
REG("pagemap", S_IRUSR, proc_pagemap_operations),
#endif
#ifdef CONFIG_SECURITY
@@ -3313,6 +3527,7 @@ static const struct pid_entry tid_base_stuff[] = {
#ifdef CONFIG_PROC_PAGE_MONITOR
REG("clear_refs", S_IWUSR, proc_clear_refs_operations),
REG("smaps", S_IRUGO, proc_tid_smaps_operations),
+ REG("smaps_rollup", S_IRUGO, proc_pid_smaps_rollup_operations),
REG("pagemap", S_IRUSR, proc_pagemap_operations),
#endif
#ifdef CONFIG_SECURITY
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index fa4dd182bfaa..2bfff313bf94 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -209,6 +209,7 @@ struct pde_opener {
extern const struct inode_operations proc_link_inode_operations;
extern const struct inode_operations proc_pid_link_inode_operations;
+extern const struct file_operations proc_reclaim_operations;
extern void proc_init_inodecache(void);
extern struct inode *proc_get_inode(struct super_block *, struct proc_dir_entry *);
@@ -284,10 +285,12 @@ extern int proc_remount(struct super_block *, int *, char *);
/*
* task_[no]mmu.c
*/
+struct mem_size_stats;
struct proc_maps_private {
struct inode *inode;
struct task_struct *task;
struct mm_struct *mm;
+ struct mem_size_stats *rollup;
#ifdef CONFIG_MMU
struct vm_area_struct *tail_vma;
#endif
@@ -303,6 +306,7 @@ extern const struct file_operations proc_tid_maps_operations;
extern const struct file_operations proc_pid_numa_maps_operations;
extern const struct file_operations proc_tid_numa_maps_operations;
extern const struct file_operations proc_pid_smaps_operations;
+extern const struct file_operations proc_pid_smaps_rollup_operations;
extern const struct file_operations proc_tid_smaps_operations;
extern const struct file_operations proc_clear_refs_operations;
extern const struct file_operations proc_pagemap_operations;
diff --git a/fs/proc/stat.c b/fs/proc/stat.c
index 510413eb25b8..0fd3f81fe51f 100644
--- a/fs/proc/stat.c
+++ b/fs/proc/stat.c
@@ -117,17 +117,16 @@ static int show_stat(struct seq_file *p, void *v)
}
sum += arch_irq_stat();
- seq_puts(p, "cpu ");
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(user));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(nice));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(system));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(idle));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(iowait));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(irq));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(softirq));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(steal));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(guest));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(guest_nice));
+ seq_put_decimal_ull(p, "cpu ", cputime64_to_clock_t(user));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(nice));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(system));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(idle));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(iowait));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(irq));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(softirq));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(steal));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(guest));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(guest_nice));
seq_putc(p, '\n');
for_each_online_cpu(i) {
@@ -143,23 +142,23 @@ static int show_stat(struct seq_file *p, void *v)
guest = kcpustat_cpu(i).cpustat[CPUTIME_GUEST];
guest_nice = kcpustat_cpu(i).cpustat[CPUTIME_GUEST_NICE];
seq_printf(p, "cpu%d", i);
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(user));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(nice));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(system));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(idle));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(iowait));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(irq));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(softirq));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(steal));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(guest));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(guest_nice));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(user));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(nice));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(system));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(idle));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(iowait));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(irq));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(softirq));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(steal));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(guest));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(guest_nice));
seq_putc(p, '\n');
}
- seq_printf(p, "intr %llu", (unsigned long long)sum);
+ seq_put_decimal_ull(p, "intr ", (unsigned long long)sum);
/* sum again ? it could be updated? */
for_each_irq_nr(j)
- seq_put_decimal_ull(p, ' ', kstat_irqs_usr(j));
+ seq_put_decimal_ull(p, " ", kstat_irqs_usr(j));
seq_printf(p,
"\nctxt %llu\n"
@@ -173,10 +172,10 @@ static int show_stat(struct seq_file *p, void *v)
nr_running(),
nr_iowait());
- seq_printf(p, "softirq %llu", (unsigned long long)sum_softirq);
+ seq_put_decimal_ull(p, "softirq ", (unsigned long long)sum_softirq);
for (i = 0; i < NR_SOFTIRQS; i++)
- seq_put_decimal_ull(p, ' ', per_softirq_sums[i]);
+ seq_put_decimal_ull(p, " ", per_softirq_sums[i]);
seq_putc(p, '\n');
return 0;
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index fc8dca4a7b19..c3faa39c0ce1 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -14,6 +14,8 @@
#include <linux/swapops.h>
#include <linux/mmu_notifier.h>
#include <linux/page_idle.h>
+#include <linux/mm_inline.h>
+#include <linux/ctype.h>
#include <asm/elf.h>
#include <asm/uaccess.h>
@@ -288,6 +290,7 @@ static int proc_map_release(struct inode *inode, struct file *file)
if (priv->mm)
mmdrop(priv->mm);
+ kfree(priv->rollup);
return seq_release_private(inode, file);
}
@@ -314,6 +317,23 @@ static int is_stack(struct proc_maps_private *priv,
vma->vm_end >= vma->vm_mm->start_stack;
}
+static void show_vma_header_prefix(struct seq_file *m,
+ unsigned long start, unsigned long end,
+ vm_flags_t flags, unsigned long long pgoff,
+ dev_t dev, unsigned long ino)
+{
+ seq_setwidth(m, 25 + sizeof(void *) * 6 - 1);
+ seq_printf(m, "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu ",
+ start,
+ end,
+ flags & VM_READ ? 'r' : '-',
+ flags & VM_WRITE ? 'w' : '-',
+ flags & VM_EXEC ? 'x' : '-',
+ flags & VM_MAYSHARE ? 's' : 'p',
+ pgoff,
+ MAJOR(dev), MINOR(dev), ino);
+}
+
static void
show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
{
@@ -337,17 +357,7 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
/* We don't show the stack guard page in /proc/maps */
start = vma->vm_start;
end = vma->vm_end;
-
- seq_setwidth(m, 25 + sizeof(void *) * 6 - 1);
- seq_printf(m, "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu ",
- start,
- end,
- flags & VM_READ ? 'r' : '-',
- flags & VM_WRITE ? 'w' : '-',
- flags & VM_EXEC ? 'x' : '-',
- flags & VM_MAYSHARE ? 's' : 'p',
- pgoff,
- MAJOR(dev), MINOR(dev), ino);
+ show_vma_header_prefix(m, start, end, flags, pgoff, dev, ino);
/*
* Print the dentry name for named mappings, and a
@@ -382,7 +392,6 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
name = "[stack]";
goto done;
}
-
if (vma_get_anon_name(vma)) {
seq_pad(m, ' ');
seq_print_vma_name(m, vma);
@@ -473,6 +482,7 @@ const struct file_operations proc_tid_maps_operations = {
#ifdef CONFIG_PROC_PAGE_MONITOR
struct mem_size_stats {
+ bool first;
unsigned long resident;
unsigned long shared_clean;
unsigned long shared_dirty;
@@ -484,7 +494,9 @@ struct mem_size_stats {
unsigned long swap;
unsigned long shared_hugetlb;
unsigned long private_hugetlb;
+ unsigned long first_vma_start;
u64 pss;
+ u64 pss_locked;
u64 swap_pss;
};
@@ -694,69 +706,105 @@ static int smaps_hugetlb_range(pte_t *pte, unsigned long hmask,
static int show_smap(struct seq_file *m, void *v, int is_pid)
{
+ struct proc_maps_private *priv = m->private;
struct vm_area_struct *vma = v;
- struct mem_size_stats mss;
+ struct mem_size_stats mss_stack;
+ struct mem_size_stats *mss;
struct mm_walk smaps_walk = {
.pmd_entry = smaps_pte_range,
#ifdef CONFIG_HUGETLB_PAGE
.hugetlb_entry = smaps_hugetlb_range,
#endif
.mm = vma->vm_mm,
- .private = &mss,
};
+ int ret = 0;
+ bool rollup_mode;
+ bool last_vma;
+
+ if (priv->rollup) {
+ rollup_mode = true;
+ mss = priv->rollup;
+ if (mss->first) {
+ mss->first_vma_start = vma->vm_start;
+ mss->first = false;
+ }
+ last_vma = !m_next_vma(priv, vma);
+ } else {
+ rollup_mode = false;
+ memset(&mss_stack, 0, sizeof(mss_stack));
+ mss = &mss_stack;
+ }
+
+ smaps_walk.private = mss;
- memset(&mss, 0, sizeof mss);
/* mmap_sem is held in m_start */
walk_page_vma(vma, &smaps_walk);
+ if (vma->vm_flags & VM_LOCKED)
+ mss->pss_locked += mss->pss;
+
+ if (!rollup_mode) {
+ show_map_vma(m, vma, is_pid);
+ } else if (last_vma) {
+ show_vma_header_prefix(
+ m, mss->first_vma_start, vma->vm_end, 0, 0, 0, 0);
+ seq_pad(m, ' ');
+ seq_puts(m, "[rollup]\n");
+ } else {
+ ret = SEQ_SKIP;
+ }
- show_map_vma(m, vma, is_pid);
-
- if (vma_get_anon_name(vma)) {
+ if (!rollup_mode && vma_get_anon_name(vma)) {
seq_puts(m, "Name: ");
seq_print_vma_name(m, vma);
seq_putc(m, '\n');
}
- seq_printf(m,
- "Size: %8lu kB\n"
- "Rss: %8lu kB\n"
- "Pss: %8lu kB\n"
- "Shared_Clean: %8lu kB\n"
- "Shared_Dirty: %8lu kB\n"
- "Private_Clean: %8lu kB\n"
- "Private_Dirty: %8lu kB\n"
- "Referenced: %8lu kB\n"
- "Anonymous: %8lu kB\n"
- "AnonHugePages: %8lu kB\n"
- "Shared_Hugetlb: %8lu kB\n"
- "Private_Hugetlb: %7lu kB\n"
- "Swap: %8lu kB\n"
- "SwapPss: %8lu kB\n"
- "KernelPageSize: %8lu kB\n"
- "MMUPageSize: %8lu kB\n"
- "Locked: %8lu kB\n",
- (vma->vm_end - vma->vm_start) >> 10,
- mss.resident >> 10,
- (unsigned long)(mss.pss >> (10 + PSS_SHIFT)),
- mss.shared_clean >> 10,
- mss.shared_dirty >> 10,
- mss.private_clean >> 10,
- mss.private_dirty >> 10,
- mss.referenced >> 10,
- mss.anonymous >> 10,
- mss.anonymous_thp >> 10,
- mss.shared_hugetlb >> 10,
- mss.private_hugetlb >> 10,
- mss.swap >> 10,
- (unsigned long)(mss.swap_pss >> (10 + PSS_SHIFT)),
- vma_kernel_pagesize(vma) >> 10,
- vma_mmu_pagesize(vma) >> 10,
- (vma->vm_flags & VM_LOCKED) ?
- (unsigned long)(mss.pss >> (10 + PSS_SHIFT)) : 0);
-
- show_smap_vma_flags(m, vma);
+ if (!rollup_mode)
+ seq_printf(m,
+ "Size: %8lu kB\n"
+ "KernelPageSize: %8lu kB\n"
+ "MMUPageSize: %8lu kB\n",
+ (vma->vm_end - vma->vm_start) >> 10,
+ vma_kernel_pagesize(vma) >> 10,
+ vma_mmu_pagesize(vma) >> 10);
+
+
+ if (!rollup_mode || last_vma)
+ seq_printf(m,
+ "Rss: %8lu kB\n"
+ "Pss: %8lu kB\n"
+ "Shared_Clean: %8lu kB\n"
+ "Shared_Dirty: %8lu kB\n"
+ "Private_Clean: %8lu kB\n"
+ "Private_Dirty: %8lu kB\n"
+ "Referenced: %8lu kB\n"
+ "Anonymous: %8lu kB\n"
+ "AnonHugePages: %8lu kB\n"
+ "Shared_Hugetlb: %8lu kB\n"
+ "Private_Hugetlb: %7lu kB\n"
+ "Swap: %8lu kB\n"
+ "SwapPss: %8lu kB\n"
+ "Locked: %8lu kB\n",
+ mss->resident >> 10,
+ (unsigned long)(mss->pss >> (10 + PSS_SHIFT)),
+ mss->shared_clean >> 10,
+ mss->shared_dirty >> 10,
+ mss->private_clean >> 10,
+ mss->private_dirty >> 10,
+ mss->referenced >> 10,
+ mss->anonymous >> 10,
+ mss->anonymous_thp >> 10,
+ mss->shared_hugetlb >> 10,
+ mss->private_hugetlb >> 10,
+ mss->swap >> 10,
+ (unsigned long)(mss->swap_pss >> (10 + PSS_SHIFT)),
+ (unsigned long)(mss->pss >> (10 + PSS_SHIFT)));
+
+ if (!rollup_mode) {
+ show_smap_vma_flags(m, vma);
+ }
m_cache_vma(m, vma);
- return 0;
+ return ret;
}
static int show_pid_smap(struct seq_file *m, void *v)
@@ -788,6 +836,25 @@ static int pid_smaps_open(struct inode *inode, struct file *file)
return do_maps_open(inode, file, &proc_pid_smaps_op);
}
+static int pid_smaps_rollup_open(struct inode *inode, struct file *file)
+{
+ struct seq_file *seq;
+ struct proc_maps_private *priv;
+ int ret = do_maps_open(inode, file, &proc_pid_smaps_op);
+
+ if (ret < 0)
+ return ret;
+ seq = file->private_data;
+ priv = seq->private;
+ priv->rollup = kzalloc(sizeof(*priv->rollup), GFP_KERNEL);
+ if (!priv->rollup) {
+ proc_map_release(inode, file);
+ return -ENOMEM;
+ }
+ priv->rollup->first = true;
+ return 0;
+}
+
static int tid_smaps_open(struct inode *inode, struct file *file)
{
return do_maps_open(inode, file, &proc_tid_smaps_op);
@@ -800,6 +867,13 @@ const struct file_operations proc_pid_smaps_operations = {
.release = proc_map_release,
};
+const struct file_operations proc_pid_smaps_rollup_operations = {
+ .open = pid_smaps_rollup_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = proc_map_release,
+};
+
const struct file_operations proc_tid_smaps_operations = {
.open = tid_smaps_open,
.read = seq_read,
@@ -1433,6 +1507,241 @@ const struct file_operations proc_pagemap_operations = {
};
#endif /* CONFIG_PROC_PAGE_MONITOR */
+#ifdef CONFIG_PROCESS_RECLAIM
+static int reclaim_pte_range(pmd_t *pmd, unsigned long addr,
+ unsigned long end, struct mm_walk *walk)
+{
+ struct reclaim_param *rp = walk->private;
+ struct vm_area_struct *vma = rp->vma;
+ pte_t *pte, ptent;
+ spinlock_t *ptl;
+ struct page *page;
+ LIST_HEAD(page_list);
+ int isolated;
+ int reclaimed;
+
+ split_huge_page_pmd(vma, addr, pmd);
+ if (pmd_trans_unstable(pmd) || !rp->nr_to_reclaim)
+ return 0;
+cont:
+ isolated = 0;
+ pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
+ for (; addr != end; pte++, addr += PAGE_SIZE) {
+ ptent = *pte;
+ if (!pte_present(ptent))
+ continue;
+
+ page = vm_normal_page(vma, addr, ptent);
+ if (!page)
+ continue;
+
+ if (isolate_lru_page(page))
+ continue;
+
+ list_add(&page->lru, &page_list);
+ inc_zone_page_state(page, NR_ISOLATED_ANON +
+ page_is_file_cache(page));
+ isolated++;
+ rp->nr_scanned++;
+ if ((isolated >= SWAP_CLUSTER_MAX) || !rp->nr_to_reclaim)
+ break;
+ }
+ pte_unmap_unlock(pte - 1, ptl);
+ reclaimed = reclaim_pages_from_list(&page_list, vma);
+ rp->nr_reclaimed += reclaimed;
+ rp->nr_to_reclaim -= reclaimed;
+ if (rp->nr_to_reclaim < 0)
+ rp->nr_to_reclaim = 0;
+
+ if (rp->nr_to_reclaim && (addr != end))
+ goto cont;
+
+ cond_resched();
+ return 0;
+}
+
+enum reclaim_type {
+ RECLAIM_FILE,
+ RECLAIM_ANON,
+ RECLAIM_ALL,
+ RECLAIM_RANGE,
+};
+
+struct reclaim_param reclaim_task_anon(struct task_struct *task,
+ int nr_to_reclaim)
+{
+ struct mm_struct *mm;
+ struct vm_area_struct *vma;
+ struct mm_walk reclaim_walk = {};
+ struct reclaim_param rp;
+
+ rp.nr_reclaimed = 0;
+ rp.nr_scanned = 0;
+ get_task_struct(task);
+ mm = get_task_mm(task);
+ if (!mm)
+ goto out;
+
+ reclaim_walk.mm = mm;
+ reclaim_walk.pmd_entry = reclaim_pte_range;
+
+ rp.nr_to_reclaim = nr_to_reclaim;
+ reclaim_walk.private = &rp;
+
+ down_read(&mm->mmap_sem);
+ for (vma = mm->mmap; vma; vma = vma->vm_next) {
+ if (is_vm_hugetlb_page(vma))
+ continue;
+
+ if (vma->vm_file)
+ continue;
+
+ if (vma->vm_flags & VM_LOCKED)
+ continue;
+
+ if (!rp.nr_to_reclaim)
+ break;
+
+ rp.vma = vma;
+ walk_page_range(vma->vm_start, vma->vm_end,
+ &reclaim_walk);
+ }
+
+ flush_tlb_mm(mm);
+ up_read(&mm->mmap_sem);
+ mmput(mm);
+out:
+ put_task_struct(task);
+ return rp;
+}
+
+static ssize_t reclaim_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct task_struct *task;
+ char buffer[200];
+ struct mm_struct *mm;
+ struct vm_area_struct *vma;
+ enum reclaim_type type;
+ char *type_buf;
+ struct mm_walk reclaim_walk = {};
+ unsigned long start = 0;
+ unsigned long end = 0;
+ struct reclaim_param rp;
+
+ memset(buffer, 0, sizeof(buffer));
+ if (count > sizeof(buffer) - 1)
+ count = sizeof(buffer) - 1;
+
+ if (copy_from_user(buffer, buf, count))
+ return -EFAULT;
+
+ type_buf = strstrip(buffer);
+ if (!strcmp(type_buf, "file"))
+ type = RECLAIM_FILE;
+ else if (!strcmp(type_buf, "anon"))
+ type = RECLAIM_ANON;
+ else if (!strcmp(type_buf, "all"))
+ type = RECLAIM_ALL;
+ else if (isdigit(*type_buf))
+ type = RECLAIM_RANGE;
+ else
+ goto out_err;
+
+ if (type == RECLAIM_RANGE) {
+ char *token;
+ unsigned long long len, len_in, tmp;
+ token = strsep(&type_buf, " ");
+ if (!token)
+ goto out_err;
+ tmp = memparse(token, &token);
+ if (tmp & ~PAGE_MASK || tmp > ULONG_MAX)
+ goto out_err;
+ start = tmp;
+
+ token = strsep(&type_buf, " ");
+ if (!token)
+ goto out_err;
+ len_in = memparse(token, &token);
+ len = (len_in + ~PAGE_MASK) & PAGE_MASK;
+ if (len > ULONG_MAX)
+ goto out_err;
+ /*
+ * Check to see whether len was rounded up from small -ve
+ * to zero.
+ */
+ if (len_in && !len)
+ goto out_err;
+
+ end = start + len;
+ if (end < start)
+ goto out_err;
+ }
+
+ task = get_proc_task(file->f_path.dentry->d_inode);
+ if (!task)
+ return -ESRCH;
+
+ mm = get_task_mm(task);
+ if (!mm)
+ goto out;
+
+ reclaim_walk.mm = mm;
+ reclaim_walk.pmd_entry = reclaim_pte_range;
+
+ rp.nr_to_reclaim = ~0;
+ rp.nr_reclaimed = 0;
+ reclaim_walk.private = &rp;
+
+ down_read(&mm->mmap_sem);
+ if (type == RECLAIM_RANGE) {
+ vma = find_vma(mm, start);
+ while (vma) {
+ if (vma->vm_start > end)
+ break;
+ if (is_vm_hugetlb_page(vma))
+ continue;
+
+ rp.vma = vma;
+ walk_page_range(max(vma->vm_start, start),
+ min(vma->vm_end, end),
+ &reclaim_walk);
+ vma = vma->vm_next;
+ }
+ } else {
+ for (vma = mm->mmap; vma; vma = vma->vm_next) {
+ if (is_vm_hugetlb_page(vma))
+ continue;
+
+ if (type == RECLAIM_ANON && vma->vm_file)
+ continue;
+
+ if (type == RECLAIM_FILE && !vma->vm_file)
+ continue;
+
+ rp.vma = vma;
+ walk_page_range(vma->vm_start, vma->vm_end,
+ &reclaim_walk);
+ }
+ }
+
+ flush_tlb_mm(mm);
+ up_read(&mm->mmap_sem);
+ mmput(mm);
+out:
+ put_task_struct(task);
+ return count;
+
+out_err:
+ return -EINVAL;
+}
+
+const struct file_operations proc_reclaim_operations = {
+ .write = reclaim_write,
+ .llseek = noop_llseek,
+};
+#endif
+
#ifdef CONFIG_NUMA
struct numa_maps {
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-24 08:27:43 +0000