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authorFrederic Weisbecker <fweisbec@gmail.com>2017-01-31 04:09:23 +0100
committerIngo Molnar <mingo@kernel.org>2017-02-01 09:13:49 +0100
commit5613fda9a503cd6137b120298902a34a1386b2c1 (patch)
tree5431dd50508a6cfa052a3b9966e58842b430804d /kernel/signal.c
parenta1cecf2ba78e0a6de00ff99df34b662728535aa5 (diff)
downloadlinux-5613fda9a503cd6137b120298902a34a1386b2c1.tar.bz2
sched/cputime: Convert task/group cputime to nsecs
Now that most cputime readers use the transition API which return the task cputime in old style cputime_t, we can safely store the cputime in nsecs. This will eventually make cputime statistics less opaque and more granular. Back and forth convertions between cputime_t and nsecs in order to deal with cputime_t random granularity won't be needed anymore. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Stanislaw Gruszka <sgruszka@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Wanpeng Li <wanpeng.li@hotmail.com> Link: http://lkml.kernel.org/r/1485832191-26889-8-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/signal.c')
-rw-r--r--kernel/signal.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/signal.c b/kernel/signal.c
index 218048a837ea..b63522193076 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1620,8 +1620,8 @@ bool do_notify_parent(struct task_struct *tsk, int sig)
rcu_read_unlock();
task_cputime_t(tsk, &utime, &stime);
- info.si_utime = cputime_to_clock_t(utime + tsk->signal->utime);
- info.si_stime = cputime_to_clock_t(stime + tsk->signal->stime);
+ info.si_utime = cputime_to_clock_t(utime + nsecs_to_cputime(tsk->signal->utime));
+ info.si_stime = cputime_to_clock_t(stime + nsecs_to_cputime(tsk->signal->stime));
info.si_status = tsk->exit_code & 0x7f;
if (tsk->exit_code & 0x80)