linux-kernel - [tip: sched/urgent] sched/rt, workqueue: Use PREEMPTION

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Message-ID: <157581710980.21853.10591538571662051255.tip-bot2@tip-bot2>
Date:   Sun, 08 Dec 2019 14:58:29 -0000
From:   "tip-bot2 for Sebastian Andrzej Siewior" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Tejun Heo <tj@...nel.org>, Ingo Molnar <mingo@...nel.org>,
        x86 <x86@...nel.org>, LKML <linux-kernel@...r.kernel.org>
Subject: [tip: sched/urgent] sched/rt, workqueue: Use PREEMPTION

The following commit has been merged into the sched/urgent branch of tip:

Commit-ID:     025f50f3866486a5278afa91f0d3b6b780141050
Gitweb:        https://git.kernel.org/tip/025f50f3866486a5278afa91f0d3b6b780141050
Author:        Sebastian Andrzej Siewior <bigeasy@...utronix.de>
AuthorDate:    Tue, 15 Oct 2019 21:18:21 +02:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Sun, 08 Dec 2019 14:37:37 +01:00

sched/rt, workqueue: Use PREEMPTION

CONFIG_PREEMPTION is selected by CONFIG_PREEMPT and by CONFIG_PREEMPT_RT.
Both PREEMPT and PREEMPT_RT require the same functionality which today
depends on CONFIG_PREEMPT.

Update the comment to use PREEMPTION because it is true for both
preemption models.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: Lai Jiangshan <jiangshanlai@...il.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Tejun Heo <tj@...nel.org>
Link: https://lore.kernel.org/r/20191015191821.11479-35-bigeasy@linutronix.de
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 kernel/workqueue.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index bc88fd9..bf57dc7 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -2280,7 +2280,7 @@ __acquires(&pool->lock)
 	}
 
 	/*
-	 * The following prevents a kworker from hogging CPU on !PREEMPT
+	 * The following prevents a kworker from hogging CPU on !PREEMPTION
 	 * kernels, where a requeueing work item waiting for something to
 	 * happen could deadlock with stop_machine as such work item could
 	 * indefinitely requeue itself while all other CPUs are trapped in