linux-kernel - [PATCH] cpu/hotplug: Fix state name in takedown

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Date:   Wed,  6 Dec 2017 10:59:11 +0000
From:   Brendan Jackman <brendan.jackman@....com>
To:     Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Quentin Perret <quentin.perret@....com>
Subject: [PATCH] cpu/hotplug: Fix state name in takedown_cpu comment

CPUHP_AP_SCHED_MIGRATE_DYING doesn't exist, it looks like this was
supposed to refer to CPUHP_AP_SCHED_STARTING's teardown callback
i.e. sched_cpu_dying.

Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: Boris Ostrovsky <boris.ostrovsky@...cle.com>
Cc: Dietmar Eggemann <dietmar.eggemann@....com>
Cc: Quentin Perret <quentin.perret@....com>
---
 kernel/cpu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/cpu.c b/kernel/cpu.c
index 04892a82f6ac..944c7efdf092 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -780,8 +780,8 @@ static int takedown_cpu(unsigned int cpu)
 	BUG_ON(cpu_online(cpu));
 
 	/*
-	 * The CPUHP_AP_SCHED_MIGRATE_DYING callback will have removed all
-	 * runnable tasks from the cpu, there's only the idle task left now
+	 * The teardown callback for CPUHP_AP_SCHED_STARTING will have removed
+	 * all runnable tasks from the cpu, there's only the idle task left now
 	 * that the migration thread is done doing the stop_machine thing.
 	 *
 	 * Wait for the stop thread to go away.
-- 
2.14.1