Re: [PATCH -tip V3 0/8] workqueue: break affinity initiatively

[Valentin Schneider]

On 12/01/21 12:33, Lai Jiangshan wrote:
>> I thought only pcpu pools would get the POOL_DISASSOCIATED flag on
>> offline, but it seems unbound pools also get it at init time. Did I get
>> that right?
>
> You are right.
>
> The POOL_DISASSOCIATED flag indicates whether the pool is concurrency
> management or not (negative way, POOL_DISASSOCIATED means "not concurrency
> management"). So it should be applied for all unbound pools.
>
> When !POOL_DISASSOCIATED means it is a percpu pool, and the pool->cpu
> is online and the offline callback has not been called yet even the pool->cpu
> is going to be offline.  So !POOL_DISASSOCIATED is used a lot in the code.

Thanks!