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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2014-03-18 16:26:07 +0530 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2014-03-20 12:35:46 +0100 |
| commit | 6201b4d61fbf194df6371fb3376c5026cb8f5eec (patch) | |
| tree | fe26631f72f263256eecfe127346687b423b2e21 /kernel/sched/core.c | |
| parent | e2e680fb7566880f7210cadf628c092c0433971c (diff) | |
| download | op-kernel-dev-6201b4d61fbf194df6371fb3376c5026cb8f5eec.zip op-kernel-dev-6201b4d61fbf194df6371fb3376c5026cb8f5eec.tar.gz | |
timer: Remove code redundancy while calling get_nohz_timer_target()
There are only two users of get_nohz_timer_target(): timer and hrtimer. Both
call it under same circumstances, i.e.
#ifdef CONFIG_NO_HZ_COMMON
if (!pinned && get_sysctl_timer_migration() && idle_cpu(this_cpu))
return get_nohz_timer_target();
#endif
So, it makes more sense to get all this as part of get_nohz_timer_target()
instead of duplicating code at two places. For this another parameter is
required to be passed to this routine, pinned.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: linaro-kernel@lists.linaro.org
Cc: fweisbec@gmail.com
Cc: peterz@infradead.org
Link: http://lkml.kernel.org/r/1e1b53537217d58d48c2d7a222a9c3ac47d5b64c.1395140107.git.viresh.kumar@linaro.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/sched/core.c')
| -rw-r--r-- | kernel/sched/core.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index b46131e..c0339e2 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -555,12 +555,15 @@ void resched_cpu(int cpu) * selecting an idle cpu will add more delays to the timers than intended * (as that cpu's timer base may not be uptodate wrt jiffies etc). */ -int get_nohz_timer_target(void) +int get_nohz_timer_target(int pinned) { int cpu = smp_processor_id(); int i; struct sched_domain *sd; + if (pinned || !get_sysctl_timer_migration() || !idle_cpu(cpu)) + return cpu; + rcu_read_lock(); for_each_domain(cpu, sd) { for_each_cpu(i, sched_domain_span(sd)) { |
