Re: [patch 02/13] workqueue: Provide work_on_cpu_safe()

[Tejun Heo]

On Wed, Apr 12, 2017 at 10:07:28PM +0200, Thomas Gleixner wrote:
> work_on_cpu() is not protected against CPU hotplug. For code which requires
> to be either executed on an online CPU or to fail if the CPU is not
> available the callsite would have to protect against CPU hotplug.
> 
> Provide a function which does get/put_online_cpus() around the call to
> work_on_cpu() and fails the call with -ENODEV if the target CPU is not
> online.
> 
> Preparatory patch to convert several racy task affinity manipulations.
> 
> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Cc: Tejun Heo <tj@xxxxxxxxxx>
> Cc: Lai Jiangshan <jiangshanlai@xxxxxxxxx>

Acked-by: Tejun Heo <tj@xxxxxxxxxx>

Thanks.

-- 
tejun