linux-kernel - [PATCH] workqueue/hotplug: remove the workaround in rebind

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Message-Id: <20171201142307.22352-1-jiangshanlai@gmail.com>
Date:   Fri,  1 Dec 2017 22:23:07 +0800
From:   Lai Jiangshan <jiangshanlai@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        Tejun Heo <tj@...nel.org>
Subject: [PATCH] workqueue/hotplug: remove the workaround in rebind_workers()

Sine the cpu/hotplug refactor is done, the hotplug
callbacks are called properly. So the workaround is
useless.

Signed-off-by: Lai Jiangshan <jiangshanlai@...il.com>
---
 kernel/workqueue.c | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 5c99beb8577d..528321bc45eb 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -4588,16 +4588,6 @@ static void rebind_workers(struct worker_pool *pool)
 
 	spin_lock_irq(&pool->lock);
 
-	/*
-	 * XXX: CPU hotplug notifiers are weird and can call DOWN_FAILED
-	 * w/o preceding DOWN_PREPARE.  Work around it.  CPU hotplug is
-	 * being reworked and this can go away in time.
-	 */
-	if (!(pool->flags & POOL_DISASSOCIATED)) {
-		spin_unlock_irq(&pool->lock);
-		return;
-	}
-
 	pool->flags &= ~POOL_DISASSOCIATED;
 
 	for_each_pool_worker(worker, pool) {
-- 
2.13.6 (Apple Git-96)