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sched/hotplug: Convert cpu_[in]active notifiers to state machine

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Now that we reduced everything into single notifiers, it's simple to move them
into the hotplug state machine space.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: rt@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2016-03-10 12:54:13 +01:00
parent c6d2c7475c
commit 40190a78f8
5 changed files with 30 additions and 60 deletions
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12
include/linux/cpu.h
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@ -59,18 +59,6 @@ struct notifier_block;
* CPU notifier priorities.
*/
enum {
/*
* SCHED_ACTIVE marks a cpu which is coming up active during
* CPU_ONLINE and CPU_DOWN_FAILED and must be the first notifier. Is
* also cpuset according to cpu_active mask right after activating the
* cpu. During CPU_DOWN_PREPARE, SCHED_INACTIVE reversed the operation.
*
* This ordering guarantees consistent cpu_active mask and
* migration behavior to all cpu notifiers.
*/
CPU_PRI_SCHED_ACTIVE = INT_MAX,
CPU_PRI_SCHED_INACTIVE = INT_MIN,
/* migration should happen before other stuff but after perf */
CPU_PRI_PERF = 20,
CPU_PRI_MIGRATION = 10,