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workqueue: remove redundant function invocation 

timer_stats_timer_set_start_info is invoked twice, additionally, the
invocation of this function can be moved to where it is only called when a
delay is really required.

Signed-off-by: Andrew Liu <shengping.liu@windriver.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andrew Liu 2008-05-01 04:35:14 -07:00 committed by Linus Torvalds
parent 55e462b05b
commit 8a3e77cc21
1 changed files with 2 additions and 4 deletions
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6
kernel/workqueue.c
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@ -195,7 +195,6 @@ static void delayed_work_timer_fn(unsigned long __data)
int queue_delayed_work(struct workqueue_struct *wq,
struct delayed_work *dwork, unsigned long delay)
{
timer_stats_timer_set_start_info(&dwork->timer);
if (delay == 0)
return queue_work(wq, &dwork->work);
@ -219,11 +218,12 @@ int queue_delayed_work_on(int cpu, struct workqueue_struct *wq,
struct timer_list *timer = &dwork->timer;
struct work_struct *work = &dwork->work;
timer_stats_timer_set_start_info(&dwork->timer);
if (!test_and_set_bit(WORK_STRUCT_PENDING, work_data_bits(work))) {
BUG_ON(timer_pending(timer));
BUG_ON(!list_empty(&work->entry));
timer_stats_timer_set_start_info(&dwork->timer);
/* This stores cwq for the moment, for the timer_fn */
set_wq_data(work, wq_per_cpu(wq, raw_smp_processor_id()));
timer->expires = jiffies + delay;
@ -564,7 +564,6 @@ EXPORT_SYMBOL(schedule_work);
int schedule_delayed_work(struct delayed_work *dwork,
unsigned long delay)
{
timer_stats_timer_set_start_info(&dwork->timer);
return queue_delayed_work(keventd_wq, dwork, delay);
}
EXPORT_SYMBOL(schedule_delayed_work);
@ -581,7 +580,6 @@ EXPORT_SYMBOL(schedule_delayed_work);
int schedule_delayed_work_on(int cpu,
struct delayed_work *dwork, unsigned long delay)
{
timer_stats_timer_set_start_info(&dwork->timer);
return queue_delayed_work_on(cpu, keventd_wq, dwork, delay);
}
EXPORT_SYMBOL(schedule_delayed_work_on);