linux-kernel - [tip:smp/urgent] smp/hotplug: Move step CPUHP_AP_SMPCFD

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Date:   Tue, 28 Nov 2017 05:43:00 -0800
From:   tip-bot for Lai Jiangshan <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     richard@....at, linux-kernel@...r.kernel.org,
        bigeasy@...utronix.de, jiangshanlai@...il.com,
        boris.ostrovsky@...cle.com, hpa@...or.com, mingo@...nel.org,
        peterz@...radead.org, tglx@...utronix.de
Subject: [tip:smp/urgent] smp/hotplug: Move step CPUHP_AP_SMPCFD_DYING to
 the correct place

Commit-ID:  46febd37f9c758b05cd25feae8512f22584742fe
Gitweb:     https://git.kernel.org/tip/46febd37f9c758b05cd25feae8512f22584742fe
Author:     Lai Jiangshan <jiangshanlai@...il.com>
AuthorDate: Tue, 28 Nov 2017 21:19:53 +0800
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Tue, 28 Nov 2017 14:40:23 +0100

smp/hotplug: Move step CPUHP_AP_SMPCFD_DYING to the correct place

Commit 31487f8328f2 ("smp/cfd: Convert core to hotplug state machine")
accidently put this step on the wrong place. The step should be at the
cpuhp_ap_states[] rather than the cpuhp_bp_states[].

grep smpcfd /sys/devices/system/cpu/hotplug/states
 40: smpcfd:prepare
129: smpcfd:dying

"smpcfd:dying" was missing before.
So was the invocation of the function smpcfd_dying_cpu().

Fixes: 31487f8328f2 ("smp/cfd: Convert core to hotplug state machine")
Signed-off-by: Lai Jiangshan <jiangshanlai@...il.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Richard Weinberger <richard@....at>
Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: stable@...r.kernel.org
Cc: Boris Ostrovsky <boris.ostrovsky@...cle.com>
Link: https://lkml.kernel.org/r/20171128131954.81229-1-jiangshanlai@gmail.com

---
 kernel/cpu.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/kernel/cpu.c b/kernel/cpu.c
index 04892a8..7891aec 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -1289,11 +1289,6 @@ static struct cpuhp_step cpuhp_bp_states[] = {
 		.teardown.single	= NULL,
 		.cant_stop		= true,
 	},
-	[CPUHP_AP_SMPCFD_DYING] = {
-		.name			= "smpcfd:dying",
-		.startup.single		= NULL,
-		.teardown.single	= smpcfd_dying_cpu,
-	},
 	/*
 	 * Handled on controll processor until the plugged processor manages
 	 * this itself.
@@ -1335,6 +1330,11 @@ static struct cpuhp_step cpuhp_ap_states[] = {
 		.startup.single		= NULL,
 		.teardown.single	= rcutree_dying_cpu,
 	},
+	[CPUHP_AP_SMPCFD_DYING] = {
+		.name			= "smpcfd:dying",
+		.startup.single		= NULL,
+		.teardown.single	= smpcfd_dying_cpu,
+	},
 	/* Entry state on starting. Interrupts enabled from here on. Transient
 	 * state for synchronsization */
 	[CPUHP_AP_ONLINE] = {