linux-kernel - Re: [PATCH 1/8] sched/cpufreq: remove cpufreq_trigger

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Message-ID: <20160315211448.GB6344@twins.programming.kicks-ass.net>
Date:	Tue, 15 Mar 2016 22:14:48 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Michael Turquette <mturquette@...libre.com>
Cc:	rjw@...ysocki.net, linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org, Juri.Lelli@....com,
	steve.muckle@...aro.org, morten.rasmussen@....com,
	dietmar.eggemann@....com, vincent.guittot@...aro.org,
	Michael Turquette <mturquette+renesas@...libre.com>
Subject: Re: [PATCH 1/8] sched/cpufreq: remove cpufreq_trigger_update()

On Sun, Mar 13, 2016 at 10:22:05PM -0700, Michael Turquette wrote:
> cpufreq_trigger_update() was introduced in "cpufreq: Rework the
> scheduler hooks for triggering updates"[0]. Consensus is that this
> helper is not needed and removing it will aid in experimenting with
> deadline and rt capacity requests.
> 
> Instead of reverting the above patch, which includes useful renaming of
> data structures and related functions, simply remove the function,
> update affected kerneldoc and change rt.c and deadline.c to use
> cpufreq_update_util().

This fails to explain how the need for these hooks is dealt with.