In hrtimers_init() we need to call init_hrtimers_cpu() for boot cpu. For this, currently we are emulating a call to hotplug notifier. Probably this was done initially to get rid of code redundancy. But this sequence always called a single routine, i.e. init_hrtimers_cpu(), and so calling that routine directly would be better. This would get rid of emulating a notifier call, few typecasts and the extra steps we are doing in notifier callback.
So, this patch calls init_hrtimers_cpu() directly from hrtimers_init().
Signed-off-by: Viresh Kumar viresh.kumar@linaro.org --- kernel/hrtimer.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index 833db9f..5b0cbe7 100644 --- a/kernel/hrtimer.c +++ b/kernel/hrtimer.c @@ -1753,8 +1753,7 @@ static struct notifier_block hrtimers_nb = {
void __init hrtimers_init(void) { - hrtimer_cpu_notify(&hrtimers_nb, (unsigned long)CPU_UP_PREPARE, - (void *)(long)smp_processor_id()); + init_hrtimers_cpu(smp_processor_id()); register_cpu_notifier(&hrtimers_nb); #ifdef CONFIG_HIGH_RES_TIMERS open_softirq(HRTIMER_SOFTIRQ, run_hrtimer_softirq);