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| author | Madhavan Srinivasan <maddy@linux.vnet.ibm.com> | 2017-06-25 21:04:46 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-06-28 13:08:08 +1000 |
| commit | 24bedcb7c811375a962a621613ad152d95bc28ba (patch) | |
| tree | 323243c8dac051a41e18c7bee55a5ce7c3f0bb91 /arch/powerpc/perf/power9-pmu.c | |
| parent | 89d8bb163868178d5b35d1bc1237e67306940cce (diff) | |
| download | linux-stable-24bedcb7c811375a962a621613ad152d95bc28ba.tar.gz linux-stable-24bedcb7c811375a962a621613ad152d95bc28ba.tar.bz2 linux-stable-24bedcb7c811375a962a621613ad152d95bc28ba.zip | |
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 <anton@samba.org>
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/perf/power9-pmu.c')
| -rw-r--r-- | arch/powerpc/perf/power9-pmu.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/powerpc/perf/power9-pmu.c b/arch/powerpc/perf/power9-pmu.c index 018f8e90ac35..ab4765547f20 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); |