Do ARM Cortex-A9 PMU supoort oprofile

Turgis, Frederic f-turgis at ti.com
Thu Mar 1 12:13:56 UTC 2012


Hi Dave,

By the way, in http://lists.linaro.org/pipermail/linaro-dev/2011-September/thread.html#7560, we discussed about oprofile timer mode granularity for platforms, which had the PMU bug that loses PMU interrupts (4430, 4460 and maybe 4470).
Was this timer granularity proposed/introduced ? Is it in fact part of perf infrastructure (don't know if perf relies directly on oprofile drivers/oprofile infrastructuret) ?

Regards
Fred

OMAP Platform Business Unit - OMAP System Engineering - Platform Enablement - System Multimedia

>
Texas Instruments France SA, 821 Avenue Jack Kilby, 06270 Villeneuve Loubet. 036 420 040 R.C.S Antibes. Capital de EUR 753.920

-----Original Message-----
> From: linaro-dev-bounces at lists.linaro.org [mailto:linaro-dev-bounces at lists.linaro.org] On Behalf Of
> Dave Martin
> Sent: Thursday, March 01, 2012 9:57 AM
> To: zachary6626
> Cc: linaro-dev
> Subject: Re: Do ARM Cortex-A9 PMU supoort oprofile
>
> On Wed, Feb 29, 2012 at 11:21:58PM +0800, zachary6626 wrote:
> > Sorry disturbing you!
> >
> > I have ask google for do ARM Cortex-A9 PMU supoort oprofile, but it do not have a answer definitely
> .
> >
> > So i ask you do ARM Cortex-A9 PMU supoort oprofile.
> >
> > Can u help me?
>
> In general, yes it does work.  But board support is needed in addition
> to the CPU PMU support.
>
> If you're trying to work on omap4 (panda) you may need some extra
> patches:
>
>
> For more information on this, take a look at the following thread where
> this issue was discussed recently:
>
> http://lists.linaro.org/pipermail/linaro-dev/2012-February/010326.html
>
> Cheers
> ---Dave
>
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