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From: "Paul E. McKenney" <paulmck@kernel.org>
To: Fabio Estevam <festevam@gmail.com>
Cc: Kalle Valo <kvalo@codeaurora.org>,
	ath10k@lists.infradead.org, linux-mmc <linux-mmc@vger.kernel.org>,
	Ulf Hansson <ulf.hansson@linaro.org>, Marek Vasut <marex@denx.de>,
	qais.yousef@arm.com, frederic@kernel.org, tglx@linutronix.de
Subject: Re: NOHZ tick-stop error with ath10k SDIO
Date: Wed, 18 Aug 2021 10:56:04 -0700	[thread overview]
Message-ID: <20210818175604.GX4126399@paulmck-ThinkPad-P17-Gen-1> (raw)
In-Reply-To: <CAOMZO5BY7JeFQJkU--KGRfNLTUnUVjnfar+37SvReXyBt9QJfA@mail.gmail.com>

On Wed, Aug 18, 2021 at 02:02:17PM -0300, Fabio Estevam wrote:
> Hi Paul,
> 
> On Wed, Aug 18, 2021 at 1:29 PM Fabio Estevam <festevam@gmail.com> wrote:
> >
> > Hi Paul,
> >
> > On Wed, Aug 18, 2021 at 12:43 PM Paul E. McKenney <paulmck@kernel.org> wrote:
> >
> > > I believe that you need this commit (and possibly some prerequsites):
> > >
> > > 47c218dcae65 ("tick/sched: Prevent false positive softirq pending warnings on RT")
> > >
> > > Adding Qais on CC for his thoughts.
> >
> > Thanks for the suggestion, but I am running 5.13.11, which already
> > contains this commit.
> >
> > Any extra logs I should capture to help us understand the problem?
> 
> In case it helps, I followed your suggestion from:
> https://lkml.org/lkml/2020/12/10/676
> 
> With the debug patch and suggested command line, I get the following log:
> https://pastebin.com/raw/X96zKw7i

And it turns out that I am also seeing it in v5.14-rc2, just a lot less
frequently than earlier.  I have seen three instances of handler #02
(NET_TX_SOFTIRQ?) over the past month or so while you are seeing handler
#08 (BLOCK_SOFTIRQ?), in case that makes a difference.

Adding Frederic and Thomas on CC, though I believe Frederic is off
the grid at the moment.

							Thanx, Paul

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  reply	other threads:[~2021-08-18 17:56 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-18 15:18 Fabio Estevam
2021-08-18 15:43 ` Paul E. McKenney
2021-08-18 16:29   ` Fabio Estevam
2021-08-18 17:02     ` Fabio Estevam
2021-08-18 17:56       ` Paul E. McKenney [this message]
2021-08-19 13:24         ` Fabio Estevam
2021-09-02 21:51         ` Thomas Gleixner
2021-09-02 22:09           ` Paul E. McKenney
2021-09-03  8:07           ` Thomas Gleixner
2021-09-04 21:10             ` Fabio Estevam
2021-09-05 13:00               ` Thomas Gleixner
2021-09-05 13:07                 ` Fabio Estevam
2021-09-17 16:32   ` Qais Yousef
2021-09-17 17:09     ` Paul E. McKenney

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