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[PATCH] hrtimer: call get_softirq_time() only when necessary in run_hrtimer_queue()

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It seems that run_hrtimer_queue() is calling get_softirq_time() more
often than it needs to.

With this patch, it only calls get_softirq_time() if there's a
pending timer.

Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Dimitri Sivanich 2006-03-31 02:31:20 -08:00 committed by Linus Torvalds
parent 669d7868ae
commit 3055addadb
1 changed files with 3 additions and 0 deletions
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3
kernel/hrtimer.c
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@ -606,6 +606,9 @@ static inline void run_hrtimer_queue(struct hrtimer_base *base)
{
struct rb_node *node;
if (!base->first)
return;
if (base->get_softirq_time)
base->softirq_time = base->get_softirq_time();