ARM A9 oprofile

Ming Lei ming.lei at
Thu Feb 23 00:57:10 UTC 2012

On Wed, Feb 22, 2012 at 10:41 PM, Dmitry Antipov
<dmitry.antipov at> wrote:
> On 02/22/2012 05:59 PM, Dave Martin wrote:
>> However, the way that the performance counter interrupts are routed is
>> dependent on the SoC.  OMAP4 and later have an unusual way of doing this,
>> which is why perf doesn't currently work upstream for these platforms.
> But will it work on Panda board with linux-linaro-3.3-rc3-2012.02-1 at
> least?

No, it doesn't work with upstream kernel now. You need to apply the
against upstream kernel to route CTIs IRQ so that OMAP4 PMU/perf can work well.


Ming Lei

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