diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2016-03-10 12:54:15 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-05-06 14:58:24 +0200 |
| commit | 94baf7a5d882cde0b4d591f4ab89cc32ee39ac6a (patch) | |
| tree | 06111a2e968549af69e871b1f4afbb221c33fc8e /kernel/sched | |
| parent | sched/hotplug: Move sync_rcu to be with set_cpu_active(false) (diff) | |
| download | linux-94baf7a5d882cde0b4d591f4ab89cc32ee39ac6a.tar.xz linux-94baf7a5d882cde0b4d591f4ab89cc32ee39ac6a.zip | |
sched/migration: Move prepare transition to SCHED_STARTING state
We can piggy pack that on the SCHED_STARTING state. It's not required before
the cpu actually comes online. Name the function proper as it has nothing to
do with migration.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160310120025.248226511@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/core.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 0a3107809972..bafc308e6d45 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -5424,11 +5424,6 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu) switch (action & ~CPU_TASKS_FROZEN) { - case CPU_UP_PREPARE: - rq->calc_load_update = calc_load_update; - account_reset_rq(rq); - break; - case CPU_ONLINE: /* Update our root-domain */ raw_spin_lock_irqsave(&rq->lock, flags); @@ -7139,9 +7134,19 @@ int sched_cpu_deactivate(unsigned int cpu) return 0; } +static void sched_rq_cpu_starting(unsigned int cpu) +{ + struct rq *rq = cpu_rq(cpu); + + rq->calc_load_update = calc_load_update; + account_reset_rq(rq); + update_max_interval(); +} + int sched_cpu_starting(unsigned int cpu) { set_cpu_rq_start_time(cpu); + sched_rq_cpu_starting(cpu); return 0; } @@ -7182,11 +7187,8 @@ void __init sched_init_smp(void) static int __init migration_init(void) { void *cpu = (void *)(long)smp_processor_id(); - int err; - /* Initialize migration for the boot CPU */ - err = migration_call(&migration_notifier, CPU_UP_PREPARE, cpu); - BUG_ON(err == NOTIFY_BAD); + sched_rq_cpu_starting(smp_processor_id()); migration_call(&migration_notifier, CPU_ONLINE, cpu); register_cpu_notifier(&migration_notifier); |