On 12/12, David Hildenbrand wrote:
>
> void get_online_cpus(void)
> {
> @@ -103,8 +95,7 @@ void get_online_cpus(void)
> return;
> cpuhp_lock_acquire_read();
> mutex_lock(&cpu_hotplug.lock);
> - apply_puts_pending(65536);
> - cpu_hotplug.refcount++;
> + atomic_inc(&cpu_hotplug.refcount);
> mutex_unlock(&cpu_hotplug.lock);
I think the patch is fine.
I am wondering if it makes sense to add
if (atomic_inc_not_zero(&cpu_hotplug.refcount))
return;
before mutex_lock(). But even if I am right we can do this later.
Oleg.
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