linux-kernel - Re: 4.14 regression - hang on shutdown (VIA longhaul related?)

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Message-ID: <alpine.LRH.2.21.1711272219361.5402@math.ut.ee>
Date:   Mon, 27 Nov 2017 22:20:22 +0200 (EET)
From:   Meelis Roos <mroos@...ux.ee>
To:     "Rafael J. Wysocki" <rafael@...nel.org>
cc:     Viresh Kumar <viresh.kumar@...aro.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Linux Kernel list <linux-kernel@...r.kernel.org>
Subject: Re: 4.14 regression - hang on shutdown (VIA longhaul related?)

> On Mon, Nov 27, 2017 at 4:19 PM, Meelis Roos <mroos@...ux.ee> wrote:
> >> > Please try to replace the 10000 in
> >> > cpufreq_policy_transition_delay_us() with a greater number (say 20000
> >> > or 50000) and see if that helps.
> >>
> >> With 50000 it has worked 4 reboots out of 4.
> >
> > With 20000, it also seems to work 3 out of 3 times.
> 
> OK, please test it a bit more just to be sure.  If 20000 is
> sufficient, we can easily make this change.

Seems stable, 20+ reboots after diferenet uptimes and workloads were all 
successful.

-- 
Meelis Roos (mroos@...ux.ee)