From: Thomas Gleixner Date: Sat, 19 Apr 2008 19:31:26 +0000 (+0200) Subject: hrtimer: optimize the softirq time optimization X-Git-Tag: v3.12-rc1~22004^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=259aae864ceeb2b34e7bafa1ce18d096a357fab2;p=kernel%2Fkernel-generic.git hrtimer: optimize the softirq time optimization The previous optimization did not take the case into account where a clock provides its own softirq_get_time() function. Check for the availablitiy of the clock get time function first and then check if we need to retrieve the time for both clocks via hrtimer_softirq_gettime() to avoid a double evaluation of time in that case as well. Signed-off-by: Thomas Gleixner --- diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index 70d4adc..f78777a 100644 --- a/kernel/hrtimer.c +++ b/kernel/hrtimer.c @@ -1254,14 +1254,13 @@ void hrtimer_run_queues(void) if (!base->first) continue; - if (gettime) { + if (base->get_softirq_time) + base->softirq_time = base->get_softirq_time(); + else if (gettime) { hrtimer_get_softirq_time(cpu_base); gettime = 0; } - if (base->get_softirq_time) - base->softirq_time = base->get_softirq_time(); - spin_lock(&cpu_base->lock); while ((node = base->first)) {