[tip:timers/core] timer: Use timer->base for flag checks

[tip-bot for Joonwoo Park]

Commit-ID:  781978e6e156101209f62b9ebc8783b70ef248de
Gitweb:     http://git.kernel.org/tip/781978e6e156101209f62b9ebc8783b70ef248de
Author:     Joonwoo Park <joonwoop@xxxxxxxxxxxxxx>
AuthorDate: Mon, 27 Apr 2015 19:21:49 -0700
Committer:  Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Tue, 5 May 2015 10:40:43 +0200

timer: Use timer->base for flag checks

At present, internal_add_timer() examines flags with 'base' which doesn't
contain flags.  Examine with 'timer->base' to avoid unnecessary waking up
of nohz CPU when timer base has TIMER_DEFERRABLE set.

Signed-off-by: Joonwoo Park <joonwoop@xxxxxxxxxxxxxx>
Cc: sboyd@xxxxxxxxxxxxxx
Cc: skannan@xxxxxxxxxxxxxx
Cc: John Stultz <john.stultz@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1430187709-21087-1-git-send-email-joonwoop@xxxxxxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
 kernel/time/timer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index 03f926c..d4af7c5 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -436,7 +436,7 @@ static void internal_add_timer(struct tvec_base *base, struct timer_list *timer)
 	 * require special care against races with idle_cpu(), lets deal
 	 * with that later.
 	 */
-	if (!tbase_get_deferrable(base) || tick_nohz_full_cpu(base->cpu))
+	if (!tbase_get_deferrable(timer->base) || tick_nohz_full_cpu(base->cpu))
 		wake_up_nohz_cpu(base->cpu);
 }
 
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