Hi Dmitry,
On Wed, Feb 22, 2012 at 6:15 PM, Dmitry Antipov dmitry.antipov@linaro.org 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
Wrt. perf support on ARM A9, I think the builtin PMU can work well with mainline kernel.
without oprofile.timer=1 kernel option, at least for Linus' tree;
I didn't use oprofile before and always use 'perf', and I am sure it works well with arm a9 pmu hardware on linus tree.
searching gives a lot of discussion/patches fragments and similar stuff, but I was unable to find a complete patch/git tree/whatever else to try.
I only know some patches[1][2] are needed for omap4, but all are omap4 hardware specific and nothing to do with arm a9 pmu.
[1], http://marc.info/?l=linux-omap&m=132686049213313&w=2 [2], http://marc.info/?l=linux-arm-kernel&m=132687938417894&w=2
Hope the above can help you, :-)
thanks, -- Ming Lei