linux-kernel - Re: [PATCH] freezer,sched: Use saved_state to reduce some spurious wakeups

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Message-ID: <2886b5c3-2d88-b920-d078-7beae20e8567@quicinc.com>
Date:   Mon, 28 Aug 2023 11:36:14 -0600
From:   Jeffrey Hugo <quic_jhugo@...cinc.com>
To:     Elliot Berman <quic_eberman@...cinc.com>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Pavel Machek <pavel@....cz>
CC:     Thomas Gleixner <tglx@...utronix.de>, <kernel@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-pm@...r.kernel.org>,
        Prakash Viswalingam <quic_prakashv@...cinc.com>
Subject: Re: [PATCH] freezer,sched: Use saved_state to reduce some spurious
 wakeups

On 8/28/2023 11:33 AM, Elliot Berman wrote:
> After commit f5d39b020809 ("freezer,sched: Rewrite core freezer logic"),
> tasks that are in TASK_FREEZABLE state and end up getting frozen are
> always woken up. Prior to that commit, tasks could ask freezer to
> consider them "frozen enough" via freezer_do_not_conut(). As described

freezer_do_not_count()