linux-kernel - Re: [PATCH] ARM: twd: Adjust localtimer frequency withcpufreqnotifiers

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Message-ID: <BANLkTi=-T6P0KrsQ8+Ot_inq1JabY62LvA@mail.gmail.com>
Date:	Thu, 12 May 2011 17:14:49 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Thomas Gleixner <tglx@...utronix.de>,
	Colin Cross <ccross@...roid.com>
Cc:	Santosh Shilimkar <santosh.shilimkar@...com>,
	Russell King <linux@....linux.org.uk>,
	Srinidhi KASAGAR <srinidhi.kasagar@...ricsson.com>,
	Harald Gustafsson <harald.gustafsson@...csson.com>,
	Linus Walleij <linus.ml.walleij@...il.com>,
	linux-kernel@...r.kernel.org,
	Rickard ANDERSSON <rickard.andersson@...ricsson.com>,
	martin persson <martin.persson@...ricsson.com>,
	Varun Swara <Varun.Swara@....com>,
	Catalin Marinas <catalin.marinas@....com>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] ARM: twd: Adjust localtimer frequency withcpufreqnotifiers

2011/3/6 Linus Walleij <linus.walleij@...aro.org>:
> On Sun, Mar 6, 2011 at 6:42 PM, Colin Cross <ccross@...roid.com> wrote:
>
>> Is there any way
>> for a clockevent to invalidate the current event and ask for it to be
>> reprogrammed?
>
> TGLX will know for sure... Thomas?
>
> (This is inside a CPUfreq hook for a localtimer for the record.)

I discussed this briefly with TGLX at the UDS here and he's confident
we could add some nifty feature to reprogram an event. I dare not
try to guess where the code would sit or how it'd look...

Yours,
Linus Walleij
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