powerpc/perf: Add support for the hv gpci (get performance counter info) interface

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This provides a basic link between perf and hv_gpci. Notably, it does
not yet support transactions and does not list any events (they can
still be manually composed).

Example usage via perf tool:

	perf stat -e 'hv_gpci/counter_info_version=3,offset=0,length=8,secondary_index=0,starting_index=0xffffffff,request=0x10/' -r 0 -C 0 -x ' ' sleep 0.1

Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

...

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Cody P Schafer 2014-03-14 16:00:41 +11:00 • committed by Benjamin Herrenschmidt

parent 7b43c67950

commit 220a0c609a

1 changed files with 294 additions and 0 deletions

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arch/powerpc/perf/hv-gpci.c

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