linux-kernel - Re: [RFC PATCH RT] x86/tsc: Add option to disable tsc clocksource watchdog

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Message-ID: <20190320115129.neop27rzcepj5wvs@linutronix.de>
Date:   Wed, 20 Mar 2019 12:51:29 +0100
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Juri Lelli <juri.lelli@...hat.com>
Cc:     tglx@...utronix.de, linux-rt-users@...r.kernel.org,
        peterz@...radead.org, linux-kernel@...r.kernel.org,
        bristot@...hat.com, williams@...hat.com
Subject: Re: [RFC PATCH RT] x86/tsc: Add option to disable tsc clocksource
 watchdog

On 2019-03-14 08:09:51 [+0100], Juri Lelli wrote:
> Hi,
> 
> On 07/03/19 13:09, Juri Lelli wrote:
> > Clocksource watchdog has been found responsible for generating latency
> > spikes (in the 10-20 us range) when woken up to check for TSC stability.
> > 
> > Add an option to disable it at boot.
> 
> Gentle ping.
> 
> Does this make any sense?

I have to reroute this ping to tglx since I wasn't involved.

> Thanks,
> 
> - Juri

Sebastian