From: Thomas Gleixner <tglx@linutronix.de>
To: Mike Galbraith <efault@gmx.de>, Ingo Molnar <mingo@kernel.org>
Cc: Wang Qing <wangqing@vivo.com>, Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Juri Lelli <juri.lelli@redhat.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Steven Rostedt <rostedt@goodmis.org>,
Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
Daniel Bristot de Oliveira <bristot@redhat.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] sched: swait: use wake_up_process() instead of wake_up_state()
Date: Wed, 17 Mar 2021 15:57:45 +0100 [thread overview]
Message-ID: <87y2elygie.fsf@nanos.tec.linutronix.de> (raw)
In-Reply-To: <16b579d7e48b7ae58b77b9eaa9757566f57408b8.camel@gmx.de>
On Wed, Mar 17 2021 at 11:41, Mike Galbraith wrote:
> On Wed, 2021-03-17 at 10:46 +0100, Ingo Molnar wrote:
>> * Mike Galbraith <efault@gmx.de> wrote:
>>
>> > On Tue, 2021-03-16 at 19:20 +0800, Wang Qing wrote:
>> > > Why not just use wake_up_process().
>> >
>> > IMO this is not an improvement. There are other places where explicit
>> > TASK_NORMAL is used as well, and they're all perfectly clear as is.
>>
>> Arguably those could all be converted to wake_up_process() as well.
>> It's a very small kernel code size optimization. There's about 3 such
>> places, could be converted in a single patch.
>
> I still prefer the way it sits, but that's certainlyly a heck of a lot
> better change justification than "why not" :)
Which begs the reply "Why should we?" just for 10 bytes less of kernel
text :)
prev parent reply other threads:[~2021-03-17 16:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-16 11:20 [PATCH] sched: swait: use wake_up_process() instead of wake_up_state() Wang Qing
2021-03-17 4:43 ` Mike Galbraith
2021-03-17 9:46 ` Ingo Molnar
2021-03-17 10:35 ` Peter Zijlstra
2021-03-18 2:14 ` 王擎
2021-03-18 3:03 ` Mike Galbraith
2021-03-17 10:41 ` Mike Galbraith
2021-03-17 14:57 ` Thomas Gleixner [this message]
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