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authorMichal Hocko <mhocko@suse.cz>2011-12-01 20:00:22 +0400
committerThomas Gleixner <tglx@linutronix.de>2012-02-15 18:23:09 +0400
commit430ee8819553f66fe00e36f676a45886d76e7e8b (patch)
treee45859ba70d207635a21a27fffa438ecb3a60155 /kernel/time
parent77b0d60c5adf39c74039e2142a1d3cd1e4d53799 (diff)
downloadlinux-430ee8819553f66fe00e36f676a45886d76e7e8b.tar.xz
nohz: Remove update_ts_time_stat from tick_nohz_start_idle
There is no reason to call update_ts_time_stat from tick_nohz_start_idle anymore (after e0e37c20 sched: Eliminate the ts->idle_lastupdate field) when we updated idle_lastupdate unconditionally. We haven't set idle_active yet and do not provide last_update_time so the whole call end up being just 2 wasted branches. Signed-off-by: Michal Hocko <mhocko@suse.cz> Cc: Arjan van de Ven <arjan@linux.intel.com> Link: http://lkml.kernel.org/r/1322755222-6951-1-git-send-email-mhocko@suse.cz Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/time')
-rw-r--r--kernel/time/tick-sched.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 7656642e4b8e..8cfffd9d9ce9 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -182,11 +182,7 @@ static void tick_nohz_stop_idle(int cpu, ktime_t now)
static ktime_t tick_nohz_start_idle(int cpu, struct tick_sched *ts)
{
- ktime_t now;
-
- now = ktime_get();
-
- update_ts_time_stats(cpu, ts, now, NULL);
+ ktime_t now = ktime_get();
ts->idle_entrytime = now;
ts->idle_active = 1;