linux-kernel - [tip:smp/hotplug] blk/mq: Reserve hotplug states for block multiqueue

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Date:   Mon, 19 Sep 2016 14:24:50 -0700
From:   tip-bot for Sebastian Andrzej Siewior <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     tglx@...utronix.de, linux-kernel@...r.kernel.org, hpa@...or.com,
        peterz@...radead.org, mingo@...nel.org, axboe@...nel.dk,
        bigeasy@...utronix.de
Subject: [tip:smp/hotplug] blk/mq: Reserve hotplug states for block
 multiqueue

Commit-ID:  91f926d31bf1be968523d30b4a7ad96ddda0c9a9
Gitweb:     http://git.kernel.org/tip/91f926d31bf1be968523d30b4a7ad96ddda0c9a9
Author:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
AuthorDate: Tue, 6 Sep 2016 19:04:55 +0200
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Mon, 19 Sep 2016 23:18:21 +0200

blk/mq: Reserve hotplug states for block multiqueue

This patch only reserves two CPU hotplug states for block/mq so the block tree
can apply the conversion patches.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Jens Axboe <axboe@...nel.dk>
Cc: rt@...utronix.de
Link: http://lkml.kernel.org/r/20160906170457.32393-20-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>

---
 include/linux/cpuhotplug.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h
index 242bf53..67ef8ec 100644
--- a/include/linux/cpuhotplug.h
+++ b/include/linux/cpuhotplug.h
@@ -14,6 +14,7 @@ enum cpuhp_state {
 	CPUHP_PERF_SUPERH,
 	CPUHP_X86_HPET_DEAD,
 	CPUHP_X86_APB_DEAD,
+	CPUHP_BLK_MQ_DEAD,
 	CPUHP_WORKQUEUE_PREP,
 	CPUHP_POWER_NUMA_PREPARE,
 	CPUHP_HRTIMERS_PREPARE,
@@ -22,6 +23,7 @@ enum cpuhp_state {
 	CPUHP_SMPCFD_PREPARE,
 	CPUHP_RCUTREE_PREP,
 	CPUHP_NOTIFY_PREPARE,
+	CPUHP_BLK_MQ_PREPARE,
 	CPUHP_TIMERS_DEAD,
 	CPUHP_BRINGUP_CPU,
 	CPUHP_AP_IDLE_DEAD,