Commit 844d8787 authored by Sebastian Andrzej Siewior's avatar Sebastian Andrzej Siewior Committed by Thomas Gleixner
Browse files

smpboot: Replace deprecated CPU-hotplug functions. 



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: default avatarSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210803141621.780504-34-bigeasy@linutronix.de
parent 36a21d51

kernel/smpboot.c

+4 −4
Original line number Diff line number Diff line
@@ -291,7 +291,7 @@ int smpboot_register_percpu_thread(struct smp_hotplug_thread *plug_thread) 
	unsigned int cpu;

	int ret = 0;



	get_online_cpus();

	cpus_read_lock();

	mutex_lock(&smpboot_threads_lock);

	for_each_online_cpu(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);

out:

	mutex_unlock(&smpboot_threads_lock);

	put_online_cpus();

	cpus_read_unlock();

	return ret;

}

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)

{

	get_online_cpus();

	cpus_read_lock();

	mutex_lock(&smpboot_threads_lock);

	list_del(&plug_thread->list);

	smpboot_destroy_threads(plug_thread);

	mutex_unlock(&smpboot_threads_lock);

	put_online_cpus();

	cpus_read_unlock();

}

EXPORT_SYMBOL_GPL(smpboot_unregister_percpu_thread);