linux-kernel - Re: [PATCH v4 0/2] Avoid spurious freezer wakeups

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Message-ID: <7db6eaee-af6d-492a-bc7c-23c6aa6bbdf8@quicinc.com>
Date:   Tue, 26 Sep 2023 15:04:44 -0700
From:   Elliot Berman <quic_eberman@...cinc.com>
To:     Carlos Llamas <cmllamas@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>
CC:     Ingo Molnar <mingo@...hat.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Pavel Machek <pavel@....cz>,
        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>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        <stable@...r.kernel.org>
Subject: Re: [PATCH v4 0/2] Avoid spurious freezer wakeups



On 9/26/2023 1:56 PM, Carlos Llamas wrote:
> On Tue, Sep 26, 2023 at 10:02:38PM +0200, Peter Zijlstra wrote:
>> On Tue, Sep 26, 2023 at 04:17:33PM +0000, Carlos Llamas wrote:
>>>
>>> This issue is hurting the performance of our stable 6.1 releases. Does
>>> it make sense to backport these patches into stable branches once they
>>> land in mainline? I would assume we want to fix the perf regression
>>> there too?
>>
>> Note that these patches are in tip/sched/core, slated for the next merge
>> window.
> 
> We can wait, no problem. I just wanted to make sure we also patch stable
> if needed. Elliot, would you be able to send a backport of your patches
> to stable once they land in mainline on the next merge window?

Yep, happy to send it. There's a trivial conflict to resolve w/older
kernels not having the new guard(...)(...) macros.

> 
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Cc: stable@...r.kernel.org
> 
> --
> Carlos Llamas