linux-kernel - Re: [PATCH 07/15] cpufreq: ondemand: Simplify idle cputime granularity test

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Message-ID: <aW6rAjJ5hz5BYuAR@pavilion.home>
Date: Mon, 19 Jan 2026 23:06:58 +0100
From: Frederic Weisbecker <frederic@...nel.org>
To: "Rafael J. Wysocki" <rafael@...nel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
	"Christophe Leroy (CS GROUP)" <chleroy@...nel.org>,
	Alexander Gordeev <agordeev@...ux.ibm.com>,
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	Christian Borntraeger <borntraeger@...ux.ibm.com>,
	Dietmar Eggemann <dietmar.eggemann@....com>,
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	Jan Kiszka <jan.kiszka@...mens.com>,
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	Juri Lelli <juri.lelli@...hat.com>,
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	Xin Zhao <jackzxcui1989@....com>, linux-pm@...r.kernel.org,
	linux-s390@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH 07/15] cpufreq: ondemand: Simplify idle cputime
 granularity test

Le Mon, Jan 19, 2026 at 01:30:07PM +0100, Rafael J. Wysocki a écrit :
> On Fri, Jan 16, 2026 at 3:53 PM Frederic Weisbecker <frederic@...nel.org> wrote:
> >
> > cpufreq calls get_cpu_idle_time_us() just to know if idle cputime
> > accounting has a nanoseconds granularity.
> >
> > Use the appropriate indicator instead to make that deduction.
> >
> > Signed-off-by: Frederic Weisbecker <frederic@...nel.org>
> 
> Acked-by: Rafael J. Wysocki (Intel) <rafael@...nel.org>
> 
> or please let me know if you want me to take this patch.

The patch is standalone but the rest of the patchset depends on it.
Now I don't target this patchset for v6.20-rc1.

So if you manage to sneak this patch in for v6.20-rc1, it works because
I'll rebase on -rc1. Otherwise I'll need to keep it to avoid breaking
some code assumptions.

What do you think?

Thanks.

-- 
Frederic Weisbecker
SUSE Labs