diff options
Diffstat (limited to 'kernel/workqueue.c')
| -rw-r--r-- | kernel/workqueue.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 47cdd7e76f2b..67e526b6ae81 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -685,6 +685,7 @@ EXPORT_SYMBOL(schedule_delayed_work_on); int schedule_on_each_cpu(work_func_t func) { int cpu; + int orig = -1; struct work_struct *works; works = alloc_percpu(struct work_struct); @@ -692,14 +693,28 @@ int schedule_on_each_cpu(work_func_t func) return -ENOMEM; get_online_cpus(); + + /* + * When running in keventd don't schedule a work item on + * itself. Can just call directly because the work queue is + * already bound. This also is faster. + */ + if (current_is_keventd()) + orig = raw_smp_processor_id(); + for_each_online_cpu(cpu) { struct work_struct *work = per_cpu_ptr(works, cpu); INIT_WORK(work, func); - schedule_work_on(cpu, work); + if (cpu != orig) + schedule_work_on(cpu, work); } + if (orig >= 0) + func(per_cpu_ptr(works, orig)); + for_each_online_cpu(cpu) flush_work(per_cpu_ptr(works, cpu)); + put_online_cpus(); free_percpu(works); return 0; |