linux-kernel - Re: Regression with suspicious RCU usage splats with cpu

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Message-ID: <CAJZ5v0j15uWyCRAPep4KwqSiC4UD4ZppAG++SUvN3Ok1wzDwNQ@mail.gmail.com>
Date:   Thu, 13 Jul 2017 13:50:26 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Alex Shi <alex.shi@...aro.org>, Tony Lindgren <tony@...mide.com>
Cc:     "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Linux OMAP Mailing List <linux-omap@...r.kernel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <Will.Deacon@....com>
Subject: Re: Regression with suspicious RCU usage splats with cpu_pm change

On Thu, Jul 13, 2017 at 11:43 AM, Alex Shi <alex.shi@...aro.org> wrote:
>
> On 07/13/2017 03:07 PM, Tony Lindgren wrote:
>> Hi,
>>
>> Looks like next-20170713 gives me a bunch of "suspicious RCU usage"
>> splats with cpuidle_coupled on duovero, see below. I bisected it down
>> to commit 2f027e003d05 ("cpu_pm: replace raw_notifier with
>> atomic_notifier").

OK, so I'm dropping this commit.

Thanks,
Rafael