Re: oprofile and ARM A9 hardware counter |
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- Subject: Re: oprofile and ARM A9 hardware counter
- From: Will Deacon <will.deacon@xxxxxxx>
- Date: Thu, 26 Apr 2012 19:07:19 +0100
- Cc: Kevin Hilman <khilman@xxxxxx>, Benoit Cousson <b-cousson@xxxxxx>, Ming Lei <ming.lei@xxxxxxxxxxxxx>, Maynard Johnson <maynardj@xxxxxxxxxx>, "Shilimkar\\, Santosh" <santosh.shilimkar@xxxxxx>, "oprofile-list\\@lists.sourceforge.net" <oprofile-list@xxxxxxxxxxxxxxxxxxxxx>, Lik Lik <lik88888@xxxxxxxxx>, "eranian\\@gmail.com" <eranian@xxxxxxxxx>, "linux-omap\\@vger.kernel.org" <linux-omap@xxxxxxxxxxxxxxx>, "linux-arm-kernel\\@lists.infradead.org" <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>
- In-reply-to: <20120404111524.GF32505@mudshark.cambridge.arm.com>
- User-agent: Mutt/1.5.21 (2010-09-15)
On Wed, Apr 04, 2012 at 12:15:24PM +0100, Will Deacon wrote:
> On Wed, Apr 04, 2012 at 12:29:49AM +0100, Paul Walmsley wrote:
> >
> > Part of the problem is that the clockdomain data for the emu_sys
> > clockdomain is wrong. Here's something to try to fix it. It might just
> > be enough to get it to work.
>
> Hmm, doesn't seem to work but I do see the following in dmesg when I try to
> use perf:
>
> powerdomain: waited too long for powerdomain emu_pwrdm to complete transition
>
> which is new with your patch.
Sorry to nag, but does anybody have a clue where to go from here? I can
start digging in the OMAP PM code, but it's all new territory for me.
Cheers,
Will
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