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authorWill Deacon <will.deacon@arm.com>2018-10-05 13:28:57 +0100
committerWill Deacon <will.deacon@arm.com>2018-11-21 13:16:33 +0000
commitcf7175ece01741317e1ea07609d0ec0dcbc9c31a (patch)
tree0b1924c056718da93e946eefd51d95bae1a12a89 /arch/arm64
parent342e53bd8548e07c6a734d2d3a6437ad6e6d3b09 (diff)
arm64: perf: Remove duplicate generic cache events
We cannot distinguish reads from writes in our generic cache events, so drop the WRITE entries and leave the READ entries pointing to the combined read/write events, as is done by other CPUs and architectures. Reported-by: Ganapatrao Kulkarni <Ganapatrao.Kulkarni@cavium.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64')
-rw-r--r--arch/arm64/kernel/perf_event.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
index 1a783df6f234..3005a29472e2 100644
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c
@@ -208,8 +208,6 @@ static const unsigned armv8_pmuv3_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
[C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_PMUV3_PERFCTR_L1D_CACHE,
[C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV8_PMUV3_PERFCTR_L1D_CACHE_REFILL,
- [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV8_PMUV3_PERFCTR_L1D_CACHE,
- [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV8_PMUV3_PERFCTR_L1D_CACHE_REFILL,
[C(L1I)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_PMUV3_PERFCTR_L1I_CACHE,
[C(L1I)][C(OP_READ)][C(RESULT_MISS)] = ARMV8_PMUV3_PERFCTR_L1I_CACHE_REFILL,
@@ -222,8 +220,6 @@ static const unsigned armv8_pmuv3_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
[C(BPU)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_PMUV3_PERFCTR_BR_PRED,
[C(BPU)][C(OP_READ)][C(RESULT_MISS)] = ARMV8_PMUV3_PERFCTR_BR_MIS_PRED,
- [C(BPU)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV8_PMUV3_PERFCTR_BR_PRED,
- [C(BPU)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV8_PMUV3_PERFCTR_BR_MIS_PRED,
};
static const unsigned armv8_a53_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]