linux-kernel - Re: [PATCH] ARM: Don't ever downscale loops_per

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Message-ID: <CAKohpo=fCKXmvM1PA6ob2Aai+C94RQfEiLMPp9s6stPuQw7aWg@mail.gmail.com>
Date:	Fri, 9 May 2014 14:55:08 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Doug Anderson <dianders@...omium.org>
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Russell King <linux@....linux.org.uk>,
	Will Deacon <will.deacon@....com>,
	John Stultz <john.stultz@...aro.org>,
	David Riley <davidriley@...omium.org>,
	"olof@...om.net" <olof@...om.net>,
	Sonny Rao <sonnyrao@...omium.org>,
	Richard Zhao <richard.zhao@...aro.org>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Shawn Guo <shawn.guo@...aro.org>,
	Nicolas Pitre <nicolas.pitre@...aro.org>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Marc Zyngier <marc.zyngier@....com>,
	Stephen Warren <swarren@...dia.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ARM: Don't ever downscale loops_per_jiffy in SMP systems

On 8 May 2014 20:55, Doug Anderson <dianders@...omium.org> wrote:
> On Thu, May 8, 2014 at 3:41 AM, Viresh Kumar <viresh.kumar@...aro.org> wrote:

>> And if that's the case, why don't we get rid of it completely and set
>> global-loop-per-jiffy for the max freq at boot ?
>
> How exactly do you do this in a generic way?

We could have requested for the highest possible frequency value
from cpufreq and adjust accordingly at boot.

But probably thread is turning in another direction now, so lets wait
to see what others have in box.
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