tree 37aea6d2bc263c6fa03d1fbcef364d292b46f589
parent 7b43c67950f0985be257f5fb7d656557e24d92d9
author Cody P Schafer <cody@linux.vnet.ibm.com> 1394773241 +1100
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1395614911 +1100

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

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>