[PATCH 1/2] hrtimer: don't add clock-base to active_bases if already present

[Viresh Kumar]

If active_bases already has entry for a particular clock type, then we don't
need to rewrite it while queuing a hrtimer.

Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
---
Initially I thought of doing this but then thought better remove active_bases
completely and so didn't sent this one. Now it might find some place for itself
:).

 kernel/hrtimer.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index da351ad..acfef5f 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -864,8 +864,9 @@ static int enqueue_hrtimer(struct hrtimer *timer,
 {
 	debug_activate(timer);
 
+	if (!timerqueue_getnext(&base->active))
+		base->cpu_base->active_bases |= 1 << base->index;
 	timerqueue_add(&base->active, &timer->node);
-	base->cpu_base->active_bases |= 1 << base->index;
 
 	/*
 	 * HRTIMER_STATE_ENQUEUED is or'ed to the current state to preserve the
-- 
1.7.12.rc2.18.g61b472e

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