Patch "smp/hotplug: Move step CPUHP_AP_SMPCFD_DYING to the correct place" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

smp/hotplug: Move step CPUHP_AP_SMPCFD_DYING to the correct place

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
smp-hotplug-move-step-cpuhp_ap_smpcfd_dying-to-the-correct-place.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Lai Jiangshan <[email protected]>
Date: Tue, 28 Nov 2017 21:19:53 +0800
Subject: smp/hotplug: Move step CPUHP_AP_SMPCFD_DYING to the correct place

From: Lai Jiangshan <[email protected]>

commit 46febd37f9c758b05cd25feae8512f22584742fe upstream.

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().

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

@@ -1321,11 +1321,6 @@ 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.

@@ -1367,6 +1362,11 @@ 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] = {

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/smp-hotplug-move-step-cpuhp_ap_smpcfd_dying-to-the-correct-place.patch