linux-kernel - Re: [PATCH v2] workqueue: make sysfs of unbound kworker cpumask more clever

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Date:   Tue, 19 Oct 2021 08:38:44 -1000
From:   Tejun Heo <tj@...nel.org>
To:     menglong8.dong@...il.com
Cc:     jiangshanlai@...il.com, linux-kernel@...r.kernel.org,
        mengensun@...cent.com, Menglong Dong <imagedong@...cent.com>
Subject: Re: [PATCH v2] workqueue: make sysfs of unbound kworker cpumask more
 clever

On Sun, Oct 17, 2021 at 08:04:02PM +0800, menglong8.dong@...il.com wrote:
> From: Menglong Dong <imagedong@...cent.com>
> 
> Some unfriendly component, such as dpdk, write the same mask to
> unbound kworker cpumask again and again. Every time it write to
> this interface some work is queue to cpu, even though the mask
> is same with the original mask.
> 
> So, fix it by return success and do nothing if the cpumask is
> equal with the old one.
> 
> Signed-off-by: Mengen Sun <mengensun@...cent.com>
> Signed-off-by: Menglong Dong <imagedong@...cent.com>

Applied to wq/for-5.16.

Thanks.

-- 
tejun