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authorThomas Gleixner <tglx@linutronix.de>2008-04-19 23:31:26 +0400
committerThomas Gleixner <tglx@linutronix.de>2008-04-21 09:59:51 +0400
commit259aae864ceeb2b34e7bafa1ce18d096a357fab2 (patch)
tree5adb390434df0d95497763177d729c5d6cc98d20 /kernel
parent833883d9ac4cfb31c1c4419335e68e6895a05b6b (diff)
downloadlinux-259aae864ceeb2b34e7bafa1ce18d096a357fab2.tar.xz
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 <tglx@linutronix.de>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/hrtimer.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 70d4adc74639..f78777abe769 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)) {