diff options
Diffstat (limited to 'kernel/cpu.c')
| -rw-r--r-- | kernel/cpu.c | 39 |
1 files changed, 5 insertions, 34 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c index 65e34d34ca93..3ec86bc414b7 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -481,8 +481,6 @@ static int takedown_cpu(unsigned int cpu) else synchronize_rcu(); - smpboot_park_threads(cpu); - /* * Prevent irq alloc/free while the dying cpu reorganizes the * interrupt affinities. @@ -612,38 +610,6 @@ int cpu_down(unsigned int cpu) EXPORT_SYMBOL(cpu_down); #endif /*CONFIG_HOTPLUG_CPU*/ -/* - * Unpark per-CPU smpboot kthreads at CPU-online time. - */ -static int smpboot_thread_call(struct notifier_block *nfb, - unsigned long action, void *hcpu) -{ - int cpu = (long)hcpu; - - switch (action & ~CPU_TASKS_FROZEN) { - - case CPU_DOWN_FAILED: - case CPU_ONLINE: - smpboot_unpark_threads(cpu); - break; - - default: - break; - } - - return NOTIFY_OK; -} - -static struct notifier_block smpboot_thread_notifier = { - .notifier_call = smpboot_thread_call, - .priority = CPU_PRI_SMPBOOT, -}; - -void smpboot_thread_init(void) -{ - register_cpu_notifier(&smpboot_thread_notifier); -} - /** * notify_cpu_starting(cpu) - call the CPU_STARTING notifiers * @cpu: cpu that just started @@ -959,6 +925,11 @@ static struct cpuhp_step cpuhp_bp_states[] = { .startup = cpuhp_set_cpu_active, .teardown = NULL, }, + [CPUHP_SMPBOOT_THREADS] = { + .name = "smpboot:threads", + .startup = smpboot_unpark_threads, + .teardown = smpboot_park_threads, + }, [CPUHP_NOTIFY_ONLINE] = { .name = "notify:online", .startup = notify_online, |