The patch titled
Subject: taskstats: add e/u/stime for TGID command
has been added to the -mm tree. Its filename is
taskstats-add-e-u-stime-for-tgid-command.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/taskstats-add-e-u-stime-for-tgid-command.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/taskstats-add-e-u-stime-for-tgid-command.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Zhang Xiao <xiao.zhang@xxxxxxxxxxxxx>
Subject: taskstats: add e/u/stime for TGID command
The elapsed time, user CPU time and system CPU time for the thread group
status request are presently left at zero. Fill these in.
Link: http://lkml.kernel.org/r/1488508424-12322-1-git-send-email-xiao.zhang@xxxxxxxxxxxxx
Signed-off-by: Zhang Xiao <xiao.zhang@xxxxxxxxxxxxx>
Cc: Balbir Singh <bsingharora@xxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/taskstats.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff -puN kernel/taskstats.c~taskstats-add-e-u-stime-for-tgid-command kernel/taskstats.c
--- a/kernel/taskstats.c~taskstats-add-e-u-stime-for-tgid-command
+++ a/kernel/taskstats.c
@@ -210,6 +210,7 @@ static int fill_stats_for_tgid(pid_t tgi
struct task_struct *tsk, *first;
unsigned long flags;
int rc = -ESRCH;
+ u64 delta, utime, stime;
/*
* Add additional stats from live tasks except zombie thread group
@@ -238,6 +239,16 @@ static int fill_stats_for_tgid(pid_t tgi
*/
delayacct_add_tsk(stats, tsk);
+ /* calculate task elapsed time in nsec */
+ delta = ktime_get_ns() - tsk->start_time;
+ /* Convert to micro seconds */
+ do_div(delta, NSEC_PER_USEC);
+ stats->ac_etime += delta;
+
+ task_cputime(tsk, &utime, &stime);
+ stats->ac_utime += div_u64(utime, NSEC_PER_USEC);
+ stats->ac_stime += div_u64(stime, NSEC_PER_USEC);
+
stats->nvcsw += tsk->nvcsw;
stats->nivcsw += tsk->nivcsw;
} while_each_thread(first, tsk);
_
Patches currently in -mm which might be from xiao.zhang@xxxxxxxxxxxxx are
taskstats-add-e-u-stime-for-tgid-command.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
