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Date: Tue, 12 Dec 2017 13:44:01 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Lai Jiangshan <jiangshanlai@...il.com>,
Thomas Gleixner <tglx@...utronix.de>,
Peter Zijlstra <peterz@...radead.org>,
Richard Weinberger <richard@....at>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
Boris Ostrovsky <boris.ostrovsky@...cle.com>
Subject: [PATCH 4.9 031/148] smp/hotplug: Move step CPUHP_AP_SMPCFD_DYING to the correct place
4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lai Jiangshan <jiangshanlai@...il.com>
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().
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: Boris Ostrovsky <boris.ostrovsky@...cle.com>
Link: https://lkml.kernel.org/r/20171128131954.81229-1-jiangshanlai@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
kernel/cpu.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -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] = {
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