linux-kernel - Re: [PATCH RT 24/32] sched: migrate_enable: Use stop_one_cpu

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Message-ID: <56d00d663e61abf7df7cdd91d8da98b4f9e5906e.camel@redhat.com>
Date:   Wed, 22 Jan 2020 12:39:14 -0600
From:   Scott Wood <swood@...hat.com>
To:     Steven Rostedt <rostedt@...dmis.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:     linux-kernel@...r.kernel.org,
        linux-rt-users <linux-rt-users@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Carsten Emde <C.Emde@...dl.org>,
        John Kacur <jkacur@...hat.com>,
        Julia Cartwright <julia@...com>,
        Daniel Wagner <wagi@...om.org>,
        Tom Zanussi <zanussi@...nel.org>
Subject: Re: [PATCH RT 24/32] sched: migrate_enable: Use
 stop_one_cpu_nowait()

On Wed, 2020-01-22 at 06:33 -0500, Steven Rostedt wrote:
> On Wed, 22 Jan 2020 09:31:30 +0100
> Sebastian Andrzej Siewior <bigeasy@...utronix.de> wrote:
> 
> > On 2020-01-17 12:41:35 [-0500], Steven Rostedt wrote:
> > > 4.19.94-rt39-rc1 stable review patch.
> > > If anyone has any objections, please let me know.  
> > 
> > I don't know how much of this patch and the previous is classified as
> > "new feature" vs "bug fix". This patch requires patch 31 (of this
> > series)
> > as bug fix.
> > I'm not against it, just pointing out.
> > 
> 
> Hmm, the description looked more of a bug fix than a new feature.

Yes, the state clobber was an existing bug.  Patch 23 was a performance
improvement rather than a bugfix, though.

-Scott