Messages in this thread Patch in this message | | | Date | Tue, 28 Mar 2006 14:14:29 -0600 | From | Dimitri Sivanich <> | Subject | [PATCH] 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>
Index: linux/kernel/hrtimer.c =================================================================== --- linux.orig/kernel/hrtimer.c 2006-03-28 11:46:45.279722496 -0600 +++ linux/kernel/hrtimer.c 2006-03-28 11:51:36.722469752 -0600 @@ -606,6 +606,9 @@ static inline void run_hrtimer_queue(str { struct rb_node *node; + if (!base->first) + return; + if (base->get_softirq_time) base->softirq_time = base->get_softirq_time(); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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