linux-kernel - Re: [PATCH 1/1] sched/psi: avoid resetting the min update period when it is unnecessary

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Message-ID: <20230515082710.GE4253@hirez.programming.kicks-ass.net>
Date:   Mon, 15 May 2023 10:27:10 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Suren Baghdasaryan <surenb@...gle.com>
Cc:     yang.yang29@....com.cn, mingo@...hat.com, axboe@...nel.dk,
        tj@...nel.org, hannes@...xchg.org, juri.lelli@...hat.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] sched/psi: avoid resetting the min update period
 when it is unnecessary

On Sun, May 14, 2023 at 09:33:38AM -0700, Suren Baghdasaryan wrote:
> From: Yang Yang <yang.yang29@....com.cn>
> 
> Psi_group's poll_min_period is determined by the minimum window size of
> psi_trigger when creating new triggers. While destroying a psi_trigger,
> there is no need to reset poll_min_period if the psi_trigger being
> destroyed did not have the minimum window size, since in this condition
> poll_min_period will remain the same as before.
> 
> Signed-off-by: Yang Yang <yang.yang29@....com.cn>
> Acked-by: Suren Baghdasaryan <surenb@...gle.com>
> ---
> rebase of https://lore.kernel.org/all/202305121642367753446@zte.com.cn/
> over git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core branch

Thanks!