diff options
Diffstat (limited to 'kernel/workqueue.c')
| -rw-r--r-- | kernel/workqueue.c | 32 |
1 files changed, 16 insertions, 16 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 00ff4d08e370..29fc39f1029c 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -158,8 +158,8 @@ static void __queue_work(struct cpu_workqueue_struct *cwq, * * Returns 0 if @work was already on a queue, non-zero otherwise. * - * We queue the work to the CPU it was submitted, but there is no - * guarantee that it will be processed by that CPU. + * We queue the work to the CPU on which it was submitted, but if the CPU dies + * it can be processed by another CPU. */ int queue_work(struct workqueue_struct *wq, struct work_struct *work) { @@ -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; @@ -247,7 +247,7 @@ static void run_workqueue(struct cpu_workqueue_struct *cwq) if (cwq->run_depth > 3) { /* morton gets to eat his hat */ printk("%s: recursion depth exceeded: %d\n", - __FUNCTION__, cwq->run_depth); + __func__, cwq->run_depth); dump_stack(); } while (!list_empty(&cwq->worklist)) { @@ -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); @@ -772,7 +770,7 @@ struct workqueue_struct *__create_workqueue_key(const char *name, } EXPORT_SYMBOL_GPL(__create_workqueue_key); -static void cleanup_workqueue_thread(struct cpu_workqueue_struct *cwq, int cpu) +static void cleanup_workqueue_thread(struct cpu_workqueue_struct *cwq) { /* * Our caller is either destroy_workqueue() or CPU_DEAD, @@ -808,19 +806,16 @@ static void cleanup_workqueue_thread(struct cpu_workqueue_struct *cwq, int cpu) void destroy_workqueue(struct workqueue_struct *wq) { const cpumask_t *cpu_map = wq_cpu_map(wq); - struct cpu_workqueue_struct *cwq; int cpu; get_online_cpus(); spin_lock(&workqueue_lock); list_del(&wq->list); spin_unlock(&workqueue_lock); - put_online_cpus(); - for_each_cpu_mask(cpu, *cpu_map) { - cwq = per_cpu_ptr(wq->cpu_wq, cpu); - cleanup_workqueue_thread(cwq, cpu); - } + for_each_cpu_mask(cpu, *cpu_map) + cleanup_workqueue_thread(per_cpu_ptr(wq->cpu_wq, cpu)); + put_online_cpus(); free_percpu(wq->cpu_wq); kfree(wq); @@ -838,7 +833,6 @@ static int __devinit workqueue_cpu_callback(struct notifier_block *nfb, action &= ~CPU_TASKS_FROZEN; switch (action) { - case CPU_UP_PREPARE: cpu_set(cpu, cpu_populated_map); } @@ -861,11 +855,17 @@ static int __devinit workqueue_cpu_callback(struct notifier_block *nfb, case CPU_UP_CANCELED: start_workqueue_thread(cwq, -1); case CPU_DEAD: - cleanup_workqueue_thread(cwq, cpu); + cleanup_workqueue_thread(cwq); break; } } + switch (action) { + case CPU_UP_CANCELED: + case CPU_DEAD: + cpu_clear(cpu, cpu_populated_map); + } + return NOTIFY_OK; } |