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smpboot: Replace deprecated CPU-hotplug functions.

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The functions get_online_cpus() and put_online_cpus() have been
deprecated during the CPU hotplug rework. They map directly to
cpus_read_lock() and cpus_read_unlock().

Replace deprecated CPU-hotplug functions with the official version.
The behavior remains unchanged.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210803141621.780504-34-bigeasy@linutronix.de
This commit is contained in:
Sebastian Andrzej Siewior 2021-08-03 16:16:16 +02:00 committed by Thomas Gleixner
parent 36a21d5172
commit 844d87871b
1 changed files with 4 additions and 4 deletions
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8
kernel/smpboot.c
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@ -291,7 +291,7 @@ int smpboot_register_percpu_thread(struct smp_hotplug_thread *plug_thread)
unsigned int cpu; unsigned int cpu;
int ret = 0; int ret = 0;
get_online_cpus(); cpus_read_lock();
mutex_lock(&smpboot_threads_lock); mutex_lock(&smpboot_threads_lock);
for_each_online_cpu(cpu) { for_each_online_cpu(cpu) {
ret = __smpboot_create_thread(plug_thread, cpu); ret = __smpboot_create_thread(plug_thread, cpu);
@ -304,7 +304,7 @@ int smpboot_register_percpu_thread(struct smp_hotplug_thread *plug_thread)
list_add(&plug_thread->list, &hotplug_threads); list_add(&plug_thread->list, &hotplug_threads);
out: out:
mutex_unlock(&smpboot_threads_lock); mutex_unlock(&smpboot_threads_lock);
put_online_cpus(); cpus_read_unlock();
return ret; return ret;
} }
EXPORT_SYMBOL_GPL(smpboot_register_percpu_thread); EXPORT_SYMBOL_GPL(smpboot_register_percpu_thread);
@ -317,12 +317,12 @@ EXPORT_SYMBOL_GPL(smpboot_register_percpu_thread);
*/ */
void smpboot_unregister_percpu_thread(struct smp_hotplug_thread *plug_thread) void smpboot_unregister_percpu_thread(struct smp_hotplug_thread *plug_thread)
{ {
get_online_cpus(); cpus_read_lock();
mutex_lock(&smpboot_threads_lock); mutex_lock(&smpboot_threads_lock);
list_del(&plug_thread->list); list_del(&plug_thread->list);
smpboot_destroy_threads(plug_thread); smpboot_destroy_threads(plug_thread);
mutex_unlock(&smpboot_threads_lock); mutex_unlock(&smpboot_threads_lock);
put_online_cpus(); cpus_read_unlock();
} }
EXPORT_SYMBOL_GPL(smpboot_unregister_percpu_thread); EXPORT_SYMBOL_GPL(smpboot_unregister_percpu_thread);