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From: Peter Zijlstra <peterz@infradead.org>
To: "Kuyo Chang (張建文)" <Kuyo.Chang@mediatek.com>
Cc: "dietmar.eggemann@arm.com" <dietmar.eggemann@arm.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-mediatek@lists.infradead.org"
	<linux-mediatek@lists.infradead.org>,
	"rostedt@goodmis.org" <rostedt@goodmis.org>,
	wsd_upstream <wsd_upstream@mediatek.com>,
	"vschneid@redhat.com" <vschneid@redhat.com>,
	"bristot@redhat.com" <bristot@redhat.com>,
	"juri.lelli@redhat.com" <juri.lelli@redhat.com>,
	"mingo@redhat.com" <mingo@redhat.com>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	"bsegall@google.com" <bsegall@google.com>,
	"mgorman@suse.de" <mgorman@suse.de>,
	"matthias.bgg@gmail.com" <matthias.bgg@gmail.com>,
	"vincent.guittot@linaro.org" <vincent.guittot@linaro.org>,
	"angelogioacchino.delregno@collabora.com"
	<angelogioacchino.delregno@collabora.com>
Subject: Re: [PATCH 1/1] sched/core: Fix stuck on completion for affine_move_task() when stopper disable
Date: Tue, 10 Oct 2023 16:57:47 +0200	[thread overview]
Message-ID: <20231010145747.GQ377@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <8ad1b617a1040ce4cc56a5d04e8219b5313a9a6e.camel@mediatek.com>

On Tue, Oct 10, 2023 at 02:40:22PM +0000, Kuyo Chang (張建文) wrote:
> On Fri, 2023-09-29 at 12:21 +0200, Peter Zijlstra wrote:
> >  	 
> >  On Wed, Sep 27, 2023 at 03:57:35PM +0000, Kuyo Chang (張建文) wrote:
> > 
> > > This issue occurs at CPU hotplug/set_affinity stress test.
> > > The reproduce ratio is very low(about once a week).
> > 
> > I'm assuming you're running an arm64 kernel with preempt_full=y (the
> > default for arm64).
> > 
> > Could you please test the below?
> > 
> 
> It is running good so far(more than a week)on hotplug/set affinity
> stress test. I will keep it testing and report back if it happens
> again.

OK, I suppose I should look at writing a coherent Changelog for this
then...


WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <peterz@infradead.org>
To: "Kuyo Chang (張建文)" <Kuyo.Chang@mediatek.com>
Cc: "dietmar.eggemann@arm.com" <dietmar.eggemann@arm.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-mediatek@lists.infradead.org"
	<linux-mediatek@lists.infradead.org>,
	"rostedt@goodmis.org" <rostedt@goodmis.org>,
	wsd_upstream <wsd_upstream@mediatek.com>,
	"vschneid@redhat.com" <vschneid@redhat.com>,
	"bristot@redhat.com" <bristot@redhat.com>,
	"juri.lelli@redhat.com" <juri.lelli@redhat.com>,
	"mingo@redhat.com" <mingo@redhat.com>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	"bsegall@google.com" <bsegall@google.com>,
	"mgorman@suse.de" <mgorman@suse.de>,
	"matthias.bgg@gmail.com" <matthias.bgg@gmail.com>,
	"vincent.guittot@linaro.org" <vincent.guittot@linaro.org>,
	"angelogioacchino.delregno@collabora.com"
	<angelogioacchino.delregno@collabora.com>
Subject: Re: [PATCH 1/1] sched/core: Fix stuck on completion for affine_move_task() when stopper disable
Date: Tue, 10 Oct 2023 16:57:47 +0200	[thread overview]
Message-ID: <20231010145747.GQ377@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <8ad1b617a1040ce4cc56a5d04e8219b5313a9a6e.camel@mediatek.com>

On Tue, Oct 10, 2023 at 02:40:22PM +0000, Kuyo Chang (張建文) wrote:
> On Fri, 2023-09-29 at 12:21 +0200, Peter Zijlstra wrote:
> >  	 
> >  On Wed, Sep 27, 2023 at 03:57:35PM +0000, Kuyo Chang (張建文) wrote:
> > 
> > > This issue occurs at CPU hotplug/set_affinity stress test.
> > > The reproduce ratio is very low(about once a week).
> > 
> > I'm assuming you're running an arm64 kernel with preempt_full=y (the
> > default for arm64).
> > 
> > Could you please test the below?
> > 
> 
> It is running good so far(more than a week)on hotplug/set affinity
> stress test. I will keep it testing and report back if it happens
> again.

OK, I suppose I should look at writing a coherent Changelog for this
then...

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  reply	other threads:[~2023-10-10 14:57 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-27  3:34 [PATCH 1/1] sched/core: Fix stuck on completion for affine_move_task() when stopper disable Kuyo Chang
2023-09-27  3:34 ` Kuyo Chang
2023-09-27  8:08 ` Peter Zijlstra
2023-09-27  8:08   ` Peter Zijlstra
2023-09-27 15:57   ` Kuyo Chang (張建文)
2023-09-27 15:57     ` Kuyo Chang (張建文)
2023-09-28 15:16     ` Peter Zijlstra
2023-09-28 15:16       ` Peter Zijlstra
2023-09-28 15:19       ` Peter Zijlstra
2023-09-28 15:19         ` Peter Zijlstra
2023-09-29 10:21     ` Peter Zijlstra
2023-09-29 10:21       ` Peter Zijlstra
2023-10-01 15:15       ` Kuyo Chang (張建文)
2023-10-01 15:15         ` Kuyo Chang (張建文)
2023-10-10 14:40       ` Kuyo Chang (張建文)
2023-10-10 14:40         ` Kuyo Chang (張建文)
2023-10-10 14:57         ` Peter Zijlstra [this message]
2023-10-10 14:57           ` Peter Zijlstra
2023-10-10 20:04           ` [PATCH] sched: Fix stop_one_cpu_nowait() vs hotplug Peter Zijlstra
2023-10-10 20:04             ` Peter Zijlstra
2023-10-11  3:24             ` Kuyo Chang (張建文)
2023-10-11  3:24               ` Kuyo Chang (張建文)
2023-10-11 13:26               ` Peter Zijlstra
2023-10-11 13:26                 ` Peter Zijlstra
2023-10-13  8:06             ` [tip: sched/core] " tip-bot2 for Peter Zijlstra

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