linux-kernel - Re: [RFC PATCH] perf/stat: Add --disable-hwdt

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Message-ID: <20170206131832.GG4906@rric.localdomain>
Date:   Mon, 6 Feb 2017 14:18:32 +0100
From:   Robert Richter <rric@...nel.org>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Vince Weaver <vince@...ter.net>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH] perf/stat: Add --disable-hwdt

On 06.02.17 13:49:37, Borislav Petkov wrote:
> On Mon, Feb 06, 2017 at 01:44:48PM +0100, Ingo Molnar wrote:
> > Yeah, if for some whatever reason perf locks up while running perf stat as root, 
> > so I'd keep the option, as a general principle. :-/
> 
> --dont-disable-hwdt it is.

Isn't there the danger the previous watchdog state is never restored
if for some reason perf got killed? So maybe have some other task
running that restores it once perf is gone.

-Robert