[PATCH 4/8]powerpc/perf: Add Power8 mem_access event to sysfs
From: Madhavan Srinivasan <hidden>
Date: 2015-06-11 08:44:26
Also in:
lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
Patch add "mem_access" event to sysfs. This as-is not a raw event supported by Power8 pmu. Instead, it is formed based on raw event encoding specificed in Power8-pmu.c. Primary PMU event used here is PM_MRK_INST_CMPL. This event tracks only the completed marked instructions. Random sampling mode (MMCRA[SM]) with Random Load/Store Facility Sampling (RLS) is enabled to mark type of instructions. With Random sampling in RLS mode with PM_MRK_INST_CMPL event on Power8, the LDST field in SIER identifies the memory hierarchy level (eg: L1, L2 etc), from which a data-cache miss for a marked instruction are satisfied. Reviewed-by: Sukadev Bhattiprolu <redacted> Signed-off-by: Madhavan Srinivasan <redacted> --- arch/powerpc/perf/power8-events-list.h | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/perf/power8-events-list.h b/arch/powerpc/perf/power8-events-list.h
index 1368547..fdb8ce2 100644
--- a/arch/powerpc/perf/power8-events-list.h
+++ b/arch/powerpc/perf/power8-events-list.h@@ -18,3 +18,4 @@ EVENT(PM_CMPLU_STALL, 0x4000a) EVENT(PM_INST_CMPL, 0x00002) EVENT(PM_BRU_FIN, 0x10068) EVENT(PM_BR_MPRED_CMPL, 0x400f6) +EVENT(mem_access, 0x100010401e0)
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1.9.1