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SubjectRe: [PATCH 6/7] workqueue: Remove the cacheline_aligned for nr_running
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On 2021/12/10 06:07, Tejun Heo wrote:
> On Tue, Dec 07, 2021 at 03:35:42PM +0800, Lai Jiangshan wrote:
>> From: Lai Jiangshan <laijs@linux.alibaba.com>
>>
>> nr_running is never modified remotely after the schedule callback in
>> wakeup path is removed.
>>
>> Rather nr_running is often accessed with other fields in the pool
>> together, so the cacheline_aligned for nr_running isn't needed.
>
> Does it even need to be atomic anymore?
>

It doesn't need to be atomic, it is only modified in its associated CPU
in process context.

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