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-rw-r--r--fs/proc/array.c91
1 files changed, 64 insertions, 27 deletions
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 965625a..7a34571 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -77,6 +77,7 @@
#include <linux/cpuset.h>
#include <linux/rcupdate.h>
#include <linux/delayacct.h>
+#include <linux/pid_namespace.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
@@ -145,8 +146,7 @@ static inline const char *get_task_state(struct task_struct *tsk)
TASK_UNINTERRUPTIBLE |
TASK_STOPPED |
TASK_TRACED)) |
- (tsk->exit_state & (EXIT_ZOMBIE |
- EXIT_DEAD));
+ tsk->exit_state;
const char **p = &task_state_array[0];
while (state) {
@@ -161,8 +161,15 @@ static inline char *task_state(struct task_struct *p, char *buffer)
struct group_info *group_info;
int g;
struct fdtable *fdt = NULL;
+ struct pid_namespace *ns;
+ pid_t ppid, tpid;
+ ns = current->nsproxy->pid_ns;
rcu_read_lock();
+ ppid = pid_alive(p) ?
+ task_tgid_nr_ns(rcu_dereference(p->real_parent), ns) : 0;
+ tpid = pid_alive(p) && p->ptrace ?
+ task_ppid_nr_ns(rcu_dereference(p->parent), ns) : 0;
buffer += sprintf(buffer,
"State:\t%s\n"
"Tgid:\t%d\n"
@@ -172,9 +179,9 @@ static inline char *task_state(struct task_struct *p, char *buffer)
"Uid:\t%d\t%d\t%d\t%d\n"
"Gid:\t%d\t%d\t%d\t%d\n",
get_task_state(p),
- p->tgid, p->pid,
- pid_alive(p) ? rcu_dereference(p->real_parent)->tgid : 0,
- pid_alive(p) && p->ptrace ? rcu_dereference(p->parent)->pid : 0,
+ task_tgid_nr_ns(p, ns),
+ task_pid_nr_ns(p, ns),
+ ppid, tpid,
p->uid, p->euid, p->suid, p->fsuid,
p->gid, p->egid, p->sgid, p->fsgid);
@@ -320,7 +327,21 @@ int proc_pid_status(struct task_struct *task, char *buffer)
return buffer - orig;
}
-static clock_t task_utime(struct task_struct *p)
+/*
+ * Use precise platform statistics if available:
+ */
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+static cputime_t task_utime(struct task_struct *p)
+{
+ return p->utime;
+}
+
+static cputime_t task_stime(struct task_struct *p)
+{
+ return p->stime;
+}
+#else
+static cputime_t task_utime(struct task_struct *p)
{
clock_t utime = cputime_to_clock_t(p->utime),
total = utime + cputime_to_clock_t(p->stime);
@@ -337,10 +358,10 @@ static clock_t task_utime(struct task_struct *p)
}
utime = (clock_t)temp;
- return utime;
+ return clock_t_to_cputime(utime);
}
-static clock_t task_stime(struct task_struct *p)
+static cputime_t task_stime(struct task_struct *p)
{
clock_t stime;
@@ -349,9 +370,16 @@ static clock_t task_stime(struct task_struct *p)
* the total, to make sure the total observed by userspace
* grows monotonically - apps rely on that):
*/
- stime = nsec_to_clock_t(p->se.sum_exec_runtime) - task_utime(p);
+ stime = nsec_to_clock_t(p->se.sum_exec_runtime) -
+ cputime_to_clock_t(task_utime(p));
+
+ return clock_t_to_cputime(stime);
+}
+#endif
- return stime;
+static cputime_t task_gtime(struct task_struct *p)
+{
+ return p->gtime;
}
static int do_task_stat(struct task_struct *task, char *buffer, int whole)
@@ -368,11 +396,14 @@ static int do_task_stat(struct task_struct *task, char *buffer, int whole)
unsigned long long start_time;
unsigned long cmin_flt = 0, cmaj_flt = 0;
unsigned long min_flt = 0, maj_flt = 0;
- cputime_t cutime, cstime;
- clock_t utime, stime;
+ cputime_t cutime, cstime, utime, stime;
+ cputime_t cgtime, gtime;
unsigned long rsslim = 0;
char tcomm[sizeof(task->comm)];
unsigned long flags;
+ struct pid_namespace *ns;
+
+ ns = current->nsproxy->pid_ns;
state = *get_task_state(task);
vsize = eip = esp = 0;
@@ -387,15 +418,15 @@ static int do_task_stat(struct task_struct *task, char *buffer, int whole)
sigemptyset(&sigign);
sigemptyset(&sigcatch);
- cutime = cstime = cputime_zero;
- utime = stime = 0;
+ cutime = cstime = utime = stime = cputime_zero;
+ cgtime = gtime = cputime_zero;
rcu_read_lock();
if (lock_task_sighand(task, &flags)) {
struct signal_struct *sig = task->signal;
if (sig->tty) {
- tty_pgrp = pid_nr(sig->tty->pgrp);
+ tty_pgrp = pid_nr_ns(sig->tty->pgrp, ns);
tty_nr = new_encode_dev(tty_devnum(sig->tty));
}
@@ -406,6 +437,7 @@ static int do_task_stat(struct task_struct *task, char *buffer, int whole)
cmaj_flt = sig->cmaj_flt;
cutime = sig->cutime;
cstime = sig->cstime;
+ cgtime = sig->cgtime;
rsslim = sig->rlim[RLIMIT_RSS].rlim_cur;
/* add up live thread stats at the group level */
@@ -414,20 +446,22 @@ static int do_task_stat(struct task_struct *task, char *buffer, int whole)
do {
min_flt += t->min_flt;
maj_flt += t->maj_flt;
- utime += task_utime(t);
- stime += task_stime(t);
+ utime = cputime_add(utime, task_utime(t));
+ stime = cputime_add(stime, task_stime(t));
+ gtime = cputime_add(gtime, task_gtime(t));
t = next_thread(t);
} while (t != task);
min_flt += sig->min_flt;
maj_flt += sig->maj_flt;
- utime += cputime_to_clock_t(sig->utime);
- stime += cputime_to_clock_t(sig->stime);
+ utime = cputime_add(utime, sig->utime);
+ stime = cputime_add(stime, sig->stime);
+ gtime += cputime_add(gtime, sig->gtime);
}
- sid = signal_session(sig);
- pgid = process_group(task);
- ppid = rcu_dereference(task->real_parent)->tgid;
+ sid = task_session_nr_ns(task, ns);
+ pgid = task_pgrp_nr_ns(task, ns);
+ ppid = task_ppid_nr_ns(task, ns);
unlock_task_sighand(task, &flags);
}
@@ -440,6 +474,7 @@ static int do_task_stat(struct task_struct *task, char *buffer, int whole)
maj_flt = task->maj_flt;
utime = task_utime(task);
stime = task_stime(task);
+ gtime = task_gtime(task);
}
/* scale priority and nice values from timeslices to -20..20 */
@@ -457,8 +492,8 @@ static int do_task_stat(struct task_struct *task, char *buffer, int whole)
res = sprintf(buffer, "%d (%s) %c %d %d %d %d %d %u %lu \
%lu %lu %lu %lu %lu %ld %ld %ld %ld %d 0 %llu %lu %ld %lu %lu %lu %lu %lu \
-%lu %lu %lu %lu %lu %lu %lu %lu %d %d %u %u %llu\n",
- task->pid,
+%lu %lu %lu %lu %lu %lu %lu %lu %d %d %u %u %llu %lu %ld\n",
+ task_pid_nr_ns(task, ns),
tcomm,
state,
ppid,
@@ -471,8 +506,8 @@ static int do_task_stat(struct task_struct *task, char *buffer, int whole)
cmin_flt,
maj_flt,
cmaj_flt,
- utime,
- stime,
+ cputime_to_clock_t(utime),
+ cputime_to_clock_t(stime),
cputime_to_clock_t(cutime),
cputime_to_clock_t(cstime),
priority,
@@ -502,7 +537,9 @@ static int do_task_stat(struct task_struct *task, char *buffer, int whole)
task_cpu(task),
task->rt_priority,
task->policy,
- (unsigned long long)delayacct_blkio_ticks(task));
+ (unsigned long long)delayacct_blkio_ticks(task),
+ cputime_to_clock_t(gtime),
+ cputime_to_clock_t(cgtime));
if (mm)
mmput(mm);
return res;
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