Re: [PATCH 09/15] ARM: etm: Power down etm(s) when tracing is not enabled

From: Linus Walleij
Date: Thu Jun 28 2012 - 12:01:09 EST


On Thu, Jun 21, 2012 at 12:47 AM, John Stultz <john.stultz@xxxxxxxxxx> wrote:

> From: Arve Hjønnevåg <arve@xxxxxxxxxxx>
>
> Without this change a saw an 18% increase in idle power consumption
> on one deivce when trace support is compiled into the kernel. Now
> I see the same increase only when tracing.
>
> CC: Russell King <linux@xxxxxxxxxxxxxxxx>
> CC: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>
> CC: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
> Acked-by: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
> Signed-off-by: Arve Hjønnevåg <arve@xxxxxxxxxxx>
> Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx>

We can't have this no.
Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxx>

Yours,
Linus Walleij
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