ARM A9 oprofile
dave.martin at linaro.org
Wed Feb 22 13:59:10 UTC 2012
On Wed, Feb 22, 2012 at 02:15:09PM +0400, Dmitry Antipov wrote:
> Hello Ming,
> could you please give some pointers to observe an overall status of
> oprofile support on ARM A9 cores? IIUC, now it doesn't work
Note -- it's important to understand that there's a difference
between oprofile/perf on A9, and oprofile/perf on specific boards.
On A9 generically, perf (and hence oprofile -- oprofile is built on perf
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.
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