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

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Date:   Tue, 5 Apr 2022 09:48:55 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     "T.J. Alumbaugh" <talumbau@...omium.org>
Cc:     Steven Rostedt <rostedt@...dmis.org>,
        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 Mon, Apr 04, 2022 at 04:17:54PM -0400, T.J. Alumbaugh wrote:
> 
> 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>

https://lkml.kernel.org/r/20220330160535.GN8939@worktop.programming.kicks-ass.net