diff options
| author |   Karsten Wiese <fzu@wemgehoertderstaat.de> | 2008-02-28 15:10:50 +0100 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2008-04-17 12:22:31 +0200 |
| commit | 903b8a8d4835a796f582033802c83283886f4a3d (patch) | |
| tree | 11837b4da0000633f90000bb47aaa4fa82a029be /kernel | |
| parent | locking: remove unused double_spin_lock() (diff) | |
| download | linux-dev-903b8a8d4835a796f582033802c83283886f4a3d.tar.xz linux-dev-903b8a8d4835a796f582033802c83283886f4a3d.zip | |
clockevents: optimise tick_nohz_stop_sched_tick() a bit
Call
ts = &per_cpu(tick_cpu_sched, cpu);
and
cpu = smp_processor_id();
once instead of twice.
No functional change done, as changed code runs with local irq off.
Reduces source lines and text size (20bytes on x86_64).
[ akpm@linux-foundation.org: Build fix ]
Signed-off-by: Karsten Wiese <fzu@wemgehoertderstaat.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/time/tick-sched.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index 686da821d376..69dba0c71727 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -158,9 +158,8 @@ void tick_nohz_stop_idle(int cpu) } } -static ktime_t tick_nohz_start_idle(int cpu) +static ktime_t tick_nohz_start_idle(struct tick_sched *ts) { - struct tick_sched *ts = &per_cpu(tick_cpu_sched, cpu); ktime_t now, delta; now = ktime_get(); @@ -201,8 +200,8 @@ void tick_nohz_stop_sched_tick(void) local_irq_save(flags); cpu = smp_processor_id(); - now = tick_nohz_start_idle(cpu); ts = &per_cpu(tick_cpu_sched, cpu); + now = tick_nohz_start_idle(ts); /* * If this cpu is offline and it is the one which updates @@ -222,7 +221,6 @@ void tick_nohz_stop_sched_tick(void) if (need_resched()) goto end; - cpu = smp_processor_id(); if (unlikely(local_softirq_pending())) { static int ratelimit; |