linux-kernel - Re: sched_core_balance() releasing interrupts with pi

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Date:   Mon, 4 Apr 2022 16:17:54 -0400
From:   "T.J. Alumbaugh" <talumbau@...omium.org>
To:     Steven Rostedt <rostedt@...dmis.org>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        joel@...lfernandes.org
Subject: Re: sched_core_balance() releasing interrupts with pi_lock held


On 3/29/22 17:22, Steven Rostedt wrote:
> On Mon, 21 Mar 2022 13:30:37 -0400
> Steven Rostedt <rostedt@...dmis.org> wrote:
>
>> On Wed, 16 Mar 2022 22:03:41 +0100
>> Peter Zijlstra <peterz@...radead.org> wrote:
>>
>>> Does something like the below (untested in the extreme) help?
>> Hi Peter,
>>
>> This has been tested extensively by the ChromeOS team and said that it does
>> appear to fix the problem.
>>
>> Could you get this into mainline, and tag it for stable so that it can be
>> backported to the appropriate stable releases?
>>
>> Thanks for the fix!
>>
> Hi Peter,
>
> I just don't want you to forget about this :-)
>
> -- Steve
>
Hi Peter,

Just a note that if/when you send this out as a patch, feel free to add:

Tested-by: T.J. Alumbaugh <talumbau@...omium.org>

Thanks,

- T.J.