linux-kernel - Re: [PATCH v2 0/5] Allow CPU0 to be nohz full

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Message-ID: <20190425120427.GS4038@hirez.programming.kicks-ass.net>
Date:   Thu, 25 Apr 2019 14:04:27 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Nicholas Piggin <npiggin@...il.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Frederic Weisbecker <fweisbec@...il.com>,
        Ingo Molnar <mingo@...hat.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH v2 0/5] Allow CPU0 to be nohz full

On Thu, Apr 11, 2019 at 01:34:43PM +1000, Nicholas Piggin wrote:
> Since last time, I added a compile time option to opt-out of this
> if the platform does not support suspend on non-zero, and tried to
> improve legibility of changelogs and explain the justification
> better.
> 
> I have been testing this on powerpc/pseries and it seems to work
> fine (the firmware call to suspend can be called on any CPU and
> resumes where it left off), but not included here because the
> code has some bitrot unrelated to this series which I hacked to
> fix. I will discuss it and either send an acked patch to go with
> this series if it is small, or fix it in powerpc tree.
> 

Rafael, Frederic, any comments?