From: Madhavan Srinivasan Date: Sun, 25 Jun 2017 15:34:46 +0000 (+0530) Subject: powerpc/perf: Fix branch event code for power9 X-Git-Tag: v4.14-rc1~550^2~57 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=24bedcb7c811375a962a621613ad152d95bc28ba;p=platform%2Fkernel%2Flinux-rpi.git powerpc/perf: Fix branch event code for power9 Correct "branch" event code of Power9 is "r4d05e". Replace the current "branch" event code with "r4d05e" and add a hack to use "r10012" as event code for Power9 DD1. Fixes: d89f473ff6f8 ("powerpc/perf: Fix PM_BRU_CMPL event code for power9") Reported-by: Anton Blanchard Signed-off-by: Madhavan Srinivasan Signed-off-by: Michael Ellerman --- diff --git a/arch/powerpc/perf/power9-events-list.h b/arch/powerpc/perf/power9-events-list.h index 71a6bfe..80204e0 100644 --- a/arch/powerpc/perf/power9-events-list.h +++ b/arch/powerpc/perf/power9-events-list.h @@ -16,7 +16,7 @@ EVENT(PM_CYC, 0x0001e) EVENT(PM_ICT_NOSLOT_CYC, 0x100f8) EVENT(PM_CMPLU_STALL, 0x1e054) EVENT(PM_INST_CMPL, 0x00002) -EVENT(PM_BRU_CMPL, 0x10012) +EVENT(PM_BRU_CMPL, 0x4d05e) EVENT(PM_BR_MPRED_CMPL, 0x400f6) /* All L1 D cache load references counted at finish, gated by reject */ @@ -56,3 +56,5 @@ EVENT(PM_RUN_CYC, 0x600f4) /* Instruction Dispatched */ EVENT(PM_INST_DISP, 0x200f2) EVENT(PM_INST_DISP_ALT, 0x300f2) +/* Alternate Branch event code */ +EVENT(PM_BR_CMPL_ALT, 0x10012) diff --git a/arch/powerpc/perf/power9-pmu.c b/arch/powerpc/perf/power9-pmu.c index 018f8e9..ab47655 100644 --- a/arch/powerpc/perf/power9-pmu.c +++ b/arch/powerpc/perf/power9-pmu.c @@ -231,7 +231,7 @@ static int power9_generic_events_dd1[] = { [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = PM_ICT_NOSLOT_CYC, [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = PM_CMPLU_STALL, [PERF_COUNT_HW_INSTRUCTIONS] = PM_INST_DISP, - [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = PM_BRU_CMPL, + [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = PM_BR_CMPL_ALT, [PERF_COUNT_HW_BRANCH_MISSES] = PM_BR_MPRED_CMPL, [PERF_COUNT_HW_CACHE_REFERENCES] = PM_LD_REF_L1, [PERF_COUNT_HW_CACHE_MISSES] = PM_LD_MISS_L1_FIN, @@ -453,6 +453,12 @@ static int __init init_power9_pmu(void) * sampling scenarios in power9 DD1, instead use PM_INST_DISP. */ EVENT_VAR(PM_INST_CMPL, _g).id = PM_INST_DISP; + /* + * Power9 DD1 should use PM_BR_CMPL_ALT event code for + * "branches" to provide correct counter value. + */ + EVENT_VAR(PM_BRU_CMPL, _g).id = PM_BR_CMPL_ALT; + EVENT_VAR(PM_BRU_CMPL, _c).id = PM_BR_CMPL_ALT; rc = register_power_pmu(&power9_isa207_pmu); } else { rc = register_power_pmu(&power9_pmu);