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smpboot: Replace deprecated CPU-hotplug functions. 

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2022806

commit 844d87871b6e0ac3ceb177535dcdf6e6a9f1fd4b
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Tue, 3 Aug 2021 16:16:16 +0200

    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: 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

Signed-off-by: Waiman Long <longman@redhat.com>
This commit is contained in:
Waiman Long 2021-11-12 14:23:23 -05:00
parent a0031691c0
commit 6a5512d0b0
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;
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);