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Commit e614b333 authored by Stanislaw Gruszka's avatar Stanislaw Gruszka Committed by Ingo Molnar
Browse files

sched/cputime: Fix accounting on multi-threaded processes 



Recent commit 6fac4829 ("cputime: Use accessors to read task
cputime stats") introduced a bug, where we account many times
the cputime of the first thread, instead of cputimes of all
the different threads.

Signed-off-by: default avatarStanislaw Gruszka <sgruszka@redhat.com>
Acked-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20130404085740.GA2495@redhat.com


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent fd9b86d3

kernel/sched/cputime.c

+1 −1
Original line number Diff line number Diff line
@@ -310,7 +310,7 @@ void thread_group_cputime(struct task_struct *tsk, struct task_cputime *times) 


	t = tsk;

	do {

		task_cputime(tsk, &utime, &stime);

		task_cputime(t, &utime, &stime);

		times->utime += utime;

		times->stime += stime;

		times->sum_exec_runtime += task_sched_runtime(t);