linux-kernel - Re: [PATCH v4 7/7] cpufreq: schedutil: New governor based on scheduler utilization data

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Message-ID: <20160316175341.GG6344@twins.programming.kicks-ass.net>
Date:	Wed, 16 Mar 2016 18:53:41 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:	Linux PM list <linux-pm@...r.kernel.org>,
	Juri Lelli <juri.lelli@....com>,
	Steve Muckle <steve.muckle@...aro.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Michael Turquette <mturquette@...libre.com>,
	Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH v4 7/7] cpufreq: schedutil: New governor based on
 scheduler utilization data

On Wed, Mar 16, 2016 at 03:59:18PM +0100, Rafael J. Wysocki wrote:
> +static void sugov_update_commit(struct sugov_policy *sg_policy, u64 time,
> +				unsigned int next_freq)
> +{
> +	struct cpufreq_policy *policy = sg_policy->policy;
> +
> +	if (next_freq > policy->max)
> +		next_freq = policy->max;
> +	else if (next_freq < policy->min)
> +		next_freq = policy->min;

I'm still very much undecided on these policy min/max thresholds. I
don't particularly like them.