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author | Tejun Heo <tj@kernel.org> | 2012-08-03 21:30:46 +0400 |
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committer | Tejun Heo <tj@kernel.org> | 2012-08-03 21:30:46 +0400 |
commit | 7beb2edf44b4dea820c733046ad7666d092bb4b6 (patch) | |
tree | ef264acb53bf3e0c2349792bceb6a19806d8867c /kernel/workqueue.c | |
parent | b5490077274482efde57a50b060b99bc839acd45 (diff) | |
download | linux-7beb2edf44b4dea820c733046ad7666d092bb4b6.tar.xz |
workqueue: factor out __queue_delayed_work() from queue_delayed_work_on()
This is to prepare for mod_delayed_work[_on]() and doesn't cause any
functional difference.
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/workqueue.c')
-rw-r--r-- | kernel/workqueue.c | 74 |
1 files changed, 41 insertions, 33 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index eeae77079483..d7f1b7e2bbaa 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -1261,6 +1261,46 @@ void delayed_work_timer_fn(unsigned long __data) } EXPORT_SYMBOL_GPL(delayed_work_timer_fn); +static void __queue_delayed_work(int cpu, struct workqueue_struct *wq, + struct delayed_work *dwork, unsigned long delay) +{ + struct timer_list *timer = &dwork->timer; + struct work_struct *work = &dwork->work; + unsigned int lcpu; + + WARN_ON_ONCE(timer->function != delayed_work_timer_fn || + timer->data != (unsigned long)dwork); + 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. Note that the + * work's gcwq is preserved to allow reentrance detection for + * delayed works. + */ + if (!(wq->flags & WQ_UNBOUND)) { + struct global_cwq *gcwq = get_work_gcwq(work); + + if (gcwq && gcwq->cpu != WORK_CPU_UNBOUND) + lcpu = gcwq->cpu; + else + lcpu = raw_smp_processor_id(); + } else { + lcpu = WORK_CPU_UNBOUND; + } + + set_work_cwq(work, get_cwq(lcpu, wq), 0); + + timer->expires = jiffies + delay; + + if (unlikely(cpu != WORK_CPU_UNBOUND)) + add_timer_on(timer, cpu); + else + add_timer(timer); +} + /** * queue_delayed_work_on - queue work on specific CPU after delay * @cpu: CPU number to execute work on @@ -1275,7 +1315,6 @@ EXPORT_SYMBOL_GPL(delayed_work_timer_fn); bool queue_delayed_work_on(int cpu, struct workqueue_struct *wq, struct delayed_work *dwork, unsigned long delay) { - struct timer_list *timer = &dwork->timer; struct work_struct *work = &dwork->work; bool ret = false; unsigned long flags; @@ -1287,38 +1326,7 @@ bool queue_delayed_work_on(int cpu, struct workqueue_struct *wq, local_irq_save(flags); if (!test_and_set_bit(WORK_STRUCT_PENDING_BIT, work_data_bits(work))) { - unsigned int lcpu; - - WARN_ON_ONCE(timer->function != delayed_work_timer_fn || - timer->data != (unsigned long)dwork); - 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. - * Note that the work's gcwq is preserved to allow - * reentrance detection for delayed works. - */ - if (!(wq->flags & WQ_UNBOUND)) { - struct global_cwq *gcwq = get_work_gcwq(work); - - if (gcwq && gcwq->cpu != WORK_CPU_UNBOUND) - lcpu = gcwq->cpu; - else - lcpu = raw_smp_processor_id(); - } else - lcpu = WORK_CPU_UNBOUND; - - set_work_cwq(work, get_cwq(lcpu, wq), 0); - - timer->expires = jiffies + delay; - - if (unlikely(cpu != WORK_CPU_UNBOUND)) - add_timer_on(timer, cpu); - else - add_timer(timer); + __queue_delayed_work(cpu, wq, dwork, delay); ret = true; } |