diff options
| -rw-r--r-- | kernel/workqueue.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index ae58c6ace23f..499a264183ef 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -4979,6 +4979,9 @@ static void unbind_workers(int cpu) * We've blocked all attach/detach operations. Make all workers * unbound and set DISASSOCIATED. Before this, all workers * must be on the cpu. After this, they may become diasporas. + * And the preemption disabled section in their sched callbacks + * are guaranteed to see WORKER_UNBOUND since the code here + * is on the same cpu. */ for_each_pool_worker(worker, pool) worker->flags |= WORKER_UNBOUND; @@ -4995,14 +4998,6 @@ static void unbind_workers(int cpu) mutex_unlock(&wq_pool_attach_mutex); /* - * Call schedule() so that we cross rq->lock and thus can - * guarantee sched callbacks see the %WORKER_UNBOUND flag. - * This is necessary as scheduler callbacks may be invoked - * from other cpus. - */ - schedule(); - - /* * Sched callbacks are disabled now. Zap nr_running. * After this, nr_running stays zero and need_more_worker() * and keep_working() are always true as long as the |