From: Peter Zijlstra <peterz@infradead.org>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Giovanni Gherdovich <ggherdovich@suse.cz>,
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@suse.de>,
Len Brown <lenb@kernel.org>,
x86@kernel.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org,
Mel Gorman <mgorman@techsingularity.net>,
Matt Fleming <matt@codeblueprint.co.uk>,
Viresh Kumar <viresh.kumar@linaro.org>,
Juri Lelli <juri.lelli@redhat.com>, Paul Turner <pjt@google.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
Quentin Perret <qperret@qperret.net>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Doug Smythies <dsmythies@telus.net>
Subject: Re: [PATCH v2 1/2] x86,sched: Add support for frequency invariance
Date: Fri, 4 Oct 2019 13:48:34 +0200 [thread overview]
Message-ID: <20191004114834.GE19463@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <1990043.dY4KdrEkPr@kreacher>
On Thu, Oct 03, 2019 at 07:53:49PM +0200, Rafael J. Wysocki wrote:
> On Thursday, October 3, 2019 2:15:37 PM CEST Peter Zijlstra wrote:
> > On Thu, Oct 03, 2019 at 12:27:52PM +0200, Rafael J. Wysocki wrote:
> > > > + if (smp_processor_id() != 0)
> > > > + return;
> Well, but the smp_processor_id() check has nothing to do with whether or not
> this is "core" or "atom" or something else, for example.
It is dodgy to begin with, it hard assumes we boot on cpu-0. A
'initialized' state would probably be better.
next prev parent reply other threads:[~2019-10-04 11:49 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-02 12:29 [PATCH v2 0/2] Add support for frequency invariance for (some) x86 Giovanni Gherdovich
2019-10-02 12:29 ` [PATCH v2 1/2] x86,sched: Add support for frequency invariance Giovanni Gherdovich
2019-10-02 15:23 ` kbuild test robot
2019-10-02 15:49 ` Giovanni Gherdovich
2019-10-02 16:43 ` kbuild test robot
2019-10-02 18:27 ` Peter Zijlstra
2019-10-03 10:27 ` Rafael J. Wysocki
2019-10-03 12:15 ` Peter Zijlstra
2019-10-03 17:36 ` Srinivas Pandruvada
2019-10-03 17:53 ` Rafael J. Wysocki
2019-10-04 11:48 ` Peter Zijlstra [this message]
2019-10-08 7:48 ` Giovanni Gherdovich
2019-10-08 9:32 ` Rafael J. Wysocki
2019-10-02 12:29 ` [PATCH v2 2/2] cpufreq: intel_pstate: Conditional frequency invariant accounting Giovanni Gherdovich
2019-10-03 18:05 ` Rafael J. Wysocki
2019-10-04 3:31 ` Srinivas Pandruvada
2019-10-04 8:08 ` Rafael J. Wysocki
2019-10-04 8:29 ` Giovanni Gherdovich
2019-10-04 8:28 ` Vincent Guittot
2019-10-04 8:33 ` Rafael J. Wysocki
2019-10-04 8:29 ` Rafael J. Wysocki
2019-10-04 8:57 ` Giovanni Gherdovich
2019-10-04 9:17 ` Rafael J. Wysocki
2019-10-04 15:17 ` Srinivas Pandruvada
2019-10-07 8:33 ` Giovanni Gherdovich
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