linux-kernel - Re: [PATCH v7 5/6] doc: Document CONFIG_RCU_CPU_STALL

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Message-ID: <20221117122335.GD839309@lothringen>
Date:   Thu, 17 Nov 2022 13:23:35 +0100
From:   Frederic Weisbecker <frederic@...nel.org>
To:     "Leizhen (ThunderTown)" <thunder.leizhen@...wei.com>
Cc:     "Paul E . McKenney" <paulmck@...nel.org>,
        Neeraj Upadhyay <quic_neeraju@...cinc.com>,
        Josh Triplett <josh@...htriplett.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        Joel Fernandes <joel@...lfernandes.org>, rcu@...r.kernel.org,
        linux-kernel@...r.kernel.org, Robert Elliott <elliott@....com>
Subject: Re: [PATCH v7 5/6] doc: Document CONFIG_RCU_CPU_STALL_CPUTIME=y
 stall information

On Thu, Nov 17, 2022 at 10:03:17AM +0800, Leizhen (ThunderTown) wrote:
> On 2022/11/17 6:55, Frederic Weisbecker wrote:
> > On Fri, Nov 11, 2022 at 09:07:08PM +0800, Zhen Lei wrote:
> > One last question I have. Usually all these informations can be deduced by
> > just looking at the stacktrace that comes along an RCU stall report. So on
> > which kind of situation the stacktrace is not enough?
> 
> Interrupt storm.

Now that makes sense :)

Thanks.

> 
> > 
> > Thanks.
> > .
> > 
> 
> -- 
> Regards,
>   Zhen Lei