Commit 2fdd313f authored by Michael Ellerman's avatar Michael Ellerman Committed by Benjamin Herrenschmidt

powerpc/perf: Add Power8 cache & TLB events

Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 3b830c82
......@@ -25,6 +25,37 @@
#define PM_BRU_FIN 0x10068
#define PM_BR_MPRED_CMPL 0x400f6
/* All L1 D cache load references counted at finish, gated by reject */
#define PM_LD_REF_L1 0x100ee
/* Load Missed L1 */
#define PM_LD_MISS_L1 0x3e054
/* Store Missed L1 */
#define PM_ST_MISS_L1 0x300f0
/* L1 cache data prefetches */
#define PM_L1_PREF 0x0d8b8
/* Instruction fetches from L1 */
#define PM_INST_FROM_L1 0x04080
/* Demand iCache Miss */
#define PM_L1_ICACHE_MISS 0x200fd
/* Instruction Demand sectors wriittent into IL1 */
#define PM_L1_DEMAND_WRITE 0x0408c
/* Instruction prefetch written into IL1 */
#define PM_IC_PREF_WRITE 0x0408e
/* The data cache was reloaded from local core's L3 due to a demand load */
#define PM_DATA_FROM_L3 0x4c042
/* Demand LD - L3 Miss (not L2 hit and not L3 hit) */
#define PM_DATA_FROM_L3MISS 0x300fe
/* All successful D-side store dispatches for this thread */
#define PM_L2_ST 0x17080
/* All successful D-side store dispatches for this thread that were L2 Miss */
#define PM_L2_ST_MISS 0x17082
/* Total HW L3 prefetches(Load+store) */
#define PM_L3_PREF_ALL 0x4e052
/* Data PTEG reload */
#define PM_DTLB_MISS 0x300fc
/* ITLB Reloaded */
#define PM_ITLB_MISS 0x400fc
/*
* Raw event encoding for POWER8:
......@@ -557,6 +588,8 @@ static int power8_generic_events[] = {
[PERF_COUNT_HW_INSTRUCTIONS] = PM_INST_CMPL,
[PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = PM_BRU_FIN,
[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,
};
static u64 power8_bhrb_filter_map(u64 branch_sample_type)
......@@ -596,6 +629,116 @@ static void power8_config_bhrb(u64 pmu_bhrb_filter)
mtspr(SPRN_MMCRA, (mfspr(SPRN_MMCRA) | pmu_bhrb_filter));
}
#define C(x) PERF_COUNT_HW_CACHE_##x
/*
* Table of generalized cache-related events.
* 0 means not supported, -1 means nonsensical, other values
* are event codes.
*/
static int power8_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
[ C(L1D) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = PM_LD_REF_L1,
[ C(RESULT_MISS) ] = PM_LD_MISS_L1,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = PM_ST_MISS_L1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = PM_L1_PREF,
[ C(RESULT_MISS) ] = 0,
},
},
[ C(L1I) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = PM_INST_FROM_L1,
[ C(RESULT_MISS) ] = PM_L1_ICACHE_MISS,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = PM_L1_DEMAND_WRITE,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = PM_IC_PREF_WRITE,
[ C(RESULT_MISS) ] = 0,
},
},
[ C(LL) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = PM_DATA_FROM_L3,
[ C(RESULT_MISS) ] = PM_DATA_FROM_L3MISS,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = PM_L2_ST,
[ C(RESULT_MISS) ] = PM_L2_ST_MISS,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = PM_L3_PREF_ALL,
[ C(RESULT_MISS) ] = 0,
},
},
[ C(DTLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = PM_DTLB_MISS,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
[ C(ITLB) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = 0,
[ C(RESULT_MISS) ] = PM_ITLB_MISS,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
[ C(BPU) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = PM_BRU_FIN,
[ C(RESULT_MISS) ] = PM_BR_MPRED_CMPL,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
[ C(NODE) ] = {
[ C(OP_READ) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_WRITE) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
[ C(OP_PREFETCH) ] = {
[ C(RESULT_ACCESS) ] = -1,
[ C(RESULT_MISS) ] = -1,
},
},
};
#undef C
static struct power_pmu power8_pmu = {
.name = "POWER8",
.n_counter = 6,
......@@ -611,6 +754,7 @@ static struct power_pmu power8_pmu = {
.flags = PPMU_HAS_SSLOT | PPMU_HAS_SIER | PPMU_BHRB | PPMU_EBB,
.n_generic = ARRAY_SIZE(power8_generic_events),
.generic_events = power8_generic_events,
.cache_events = &power8_cache_events,
.attr_groups = power8_pmu_attr_groups,
.bhrb_nr = 32,
};
......
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