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Subject[PATCH] proc: let task status file print utime and stime.
From: Tatsuhiro Aoshima <tatsu.pc@gmail.com>
Subject: [PATCH] proc: let task status file print utime and stime.

The task status file in proc file system did not contain
user-time and system-time. Thus, users could not get
those information of running task easily. I think
these values should be provived in human readable format.
By this patch, users can get stime and utime very easily.

Signed-off-by: Tatsuhiro Aoshima <tatsu.pc@gmail.com>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
---
fs/proc/array.c | 11 +++++++++--
1 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/fs/proc/array.c b/fs/proc/array.c
index 725a650..29afa68 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -162,6 +162,7 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
struct fdtable *fdt = NULL;
const struct cred *cred;
pid_t ppid, tpid;
+ struct timeval utime, stime;

rcu_read_lock();
ppid = pid_alive(p) ?
@@ -173,6 +174,8 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
tpid = task_pid_nr_ns(tracer, ns);
}
cred = get_cred((struct cred *) __task_cred(p));
+ cputime_to_timeval(task_utime(p), &utime);
+ cputime_to_timeval(task_stime(p), &stime);
seq_printf(m,
"State:\t%s\n"
"Tgid:\t%d\n"
@@ -180,13 +183,17 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
"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",
+ "Gid:\t%d\t%d\t%d\t%d\n"
+ "Utime:\t%lu.%06lu\n"
+ "Stime:\t%lu.%06lu\n",
get_task_state(p),
task_tgid_nr_ns(p, ns),
pid_nr_ns(pid, ns),
ppid, tpid,
cred->uid, cred->euid, cred->suid, cred->fsuid,
- cred->gid, cred->egid, cred->sgid, cred->fsgid);
+ cred->gid, cred->egid, cred->sgid, cred->fsgid,
+ (unsigned long) utime.tv_sec, (unsigned long) utime.tv_usec,
+ (unsigned long) stime.tv_sec, (unsigned long) stime.tv_usec);

task_lock(p);
if (p->files)
--
1.4.4.4




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