linux-kernel - Re: [PATCH] locking/semaphore: Use wake_q to wake up processes outside lock critical section

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Message-ID: <1049309f-cb3d-4d18-8a4a-96821605c389@redhat.com>
Date: Wed, 22 Jan 2025 13:23:11 -0500
From: Waiman Long <llong@...hat.com>
To: Peter Zijlstra <peterz@...radead.org>, Waiman Long <llong@...hat.com>
Cc: Ingo Molnar <mingo@...hat.com>, Will Deacon <will.deacon@....com>,
 Boqun Feng <boqun.feng@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] locking/semaphore: Use wake_q to wake up processes
 outside lock critical section


On 1/22/25 1:16 PM, Peter Zijlstra wrote:
> On Wed, Jan 22, 2025 at 09:51:04AM -0500, Waiman Long wrote:
>
>> Anyway, do you think this patch is worth taking? There are may be other
>> cases like this that are hiding somewhere and showing up from time to time.
> No objection to the patch, we've been moving wakeup out from under the
> lock locks for a while now. It just needs a new rationale, since the
> changelog is a bit iffy as-is.

OK, I will reword the change log and send a v2.

Thanks,
Longman