[PATCH -tip V2 08/10] workqueue: reorganize workqueue_online_cpu()

[Lai Jiangshan]

From: Lai Jiangshan <laijs@xxxxxxxxxxxxxxxxx>

Just move around the code, no functionality changed.

It prepares for later patch protecting wq_online_cpumask
in wq_pool_attach_mutex.

Acked-by: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Lai Jiangshan <laijs@xxxxxxxxxxxxxxxxx>
---
 kernel/workqueue.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index c2b66679c0aa..dc891b5c0868 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -5087,12 +5087,17 @@ int workqueue_online_cpu(unsigned int cpu)
 	mutex_lock(&wq_pool_mutex);
 	cpumask_set_cpu(cpu, wq_online_cpumask);
 
+	for_each_cpu_worker_pool(pool, cpu) {
+		mutex_lock(&wq_pool_attach_mutex);
+		rebind_workers(pool);
+		mutex_unlock(&wq_pool_attach_mutex);
+	}
+
+	/* update CPU affinity of workers of unbound pools */
 	for_each_pool(pool, pi) {
 		mutex_lock(&wq_pool_attach_mutex);
 
-		if (pool->cpu == cpu)
-			rebind_workers(pool);
-		else if (pool->cpu < 0)
+		if (pool->cpu < 0)
 			update_unbound_workers_cpumask(pool, cpu);
 
 		mutex_unlock(&wq_pool_attach_mutex);
-- 
2.19.1.6.gb485710b