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| author | Thomas Gleixner <tglx@linutronix.de> | 2016-03-10 12:54:09 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-05-06 14:58:23 +0200 |
| commit | 9cf7243d5d83d27aca47f842107bfa02b5f11d16 (patch) | |
| tree | 7d799da897639ca17556e4c67d707f6b060a4320 /kernel/sched | |
| parent | e9d867a67fd03ccc07248ca4e9c2f74fed494d5b (diff) | |
| download | linux-9cf7243d5d83d27aca47f842107bfa02b5f11d16.tar.gz | |
sched: Make set_cpu_rq_start_time() a built in hotplug state
Start distangling the maze of hotplug notifiers in the scheduler. 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>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/core.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 8bfd7d4f1c21..4df9aaae27a2 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -5473,10 +5473,10 @@ static struct notifier_block migration_notifier = { .priority = CPU_PRI_MIGRATION, }; -static void set_cpu_rq_start_time(void) +static void set_cpu_rq_start_time(unsigned int cpu) { - int cpu = smp_processor_id(); struct rq *rq = cpu_rq(cpu); + rq->age_stamp = sched_clock_cpu(cpu); } @@ -5486,10 +5486,6 @@ static int sched_cpu_active(struct notifier_block *nfb, int cpu = (long)hcpu; switch (action & ~CPU_TASKS_FROZEN) { - case CPU_STARTING: - set_cpu_rq_start_time(); - return NOTIFY_OK; - case CPU_DOWN_FAILED: set_cpu_active(cpu, true); return NOTIFY_OK; @@ -5511,6 +5507,12 @@ static int sched_cpu_inactive(struct notifier_block *nfb, } } +int sched_cpu_starting(unsigned int cpu) +{ + set_cpu_rq_start_time(cpu); + return 0; +} + static int __init migration_init(void) { void *cpu = (void *)(long)smp_processor_id(); @@ -7426,7 +7428,7 @@ void __init sched_init(void) if (cpu_isolated_map == NULL) zalloc_cpumask_var(&cpu_isolated_map, GFP_NOWAIT); idle_thread_set_boot_cpu(); - set_cpu_rq_start_time(); + set_cpu_rq_start_time(smp_processor_id()); #endif init_sched_fair_class(); |