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-rw-r--r--arch/arm/kernel/perf_event_v7.c344
1 files changed, 324 insertions, 20 deletions
diff --git a/arch/arm/kernel/perf_event_v7.c b/arch/arm/kernel/perf_event_v7.c
index 4960686afb58..963317896c80 100644
--- a/arch/arm/kernel/perf_event_v7.c
+++ b/arch/arm/kernel/perf_event_v7.c
@@ -17,17 +17,23 @@
*/
#ifdef CONFIG_CPU_V7
-/* Common ARMv7 event types */
+/*
+ * Common ARMv7 event types
+ *
+ * Note: An implementation may not be able to count all of these events
+ * but the encodings are considered to be `reserved' in the case that
+ * they are not available.
+ */
enum armv7_perf_types {
ARMV7_PERFCTR_PMNC_SW_INCR = 0x00,
ARMV7_PERFCTR_IFETCH_MISS = 0x01,
ARMV7_PERFCTR_ITLB_MISS = 0x02,
- ARMV7_PERFCTR_DCACHE_REFILL = 0x03,
- ARMV7_PERFCTR_DCACHE_ACCESS = 0x04,
+ ARMV7_PERFCTR_DCACHE_REFILL = 0x03, /* L1 */
+ ARMV7_PERFCTR_DCACHE_ACCESS = 0x04, /* L1 */
ARMV7_PERFCTR_DTLB_REFILL = 0x05,
ARMV7_PERFCTR_DREAD = 0x06,
ARMV7_PERFCTR_DWRITE = 0x07,
-
+ ARMV7_PERFCTR_INSTR_EXECUTED = 0x08,
ARMV7_PERFCTR_EXC_TAKEN = 0x09,
ARMV7_PERFCTR_EXC_EXECUTED = 0x0A,
ARMV7_PERFCTR_CID_WRITE = 0x0B,
@@ -39,21 +45,30 @@ enum armv7_perf_types {
*/
ARMV7_PERFCTR_PC_WRITE = 0x0C,
ARMV7_PERFCTR_PC_IMM_BRANCH = 0x0D,
+ ARMV7_PERFCTR_PC_PROC_RETURN = 0x0E,
ARMV7_PERFCTR_UNALIGNED_ACCESS = 0x0F,
+
+ /* These events are defined by the PMUv2 supplement (ARM DDI 0457A). */
ARMV7_PERFCTR_PC_BRANCH_MIS_PRED = 0x10,
ARMV7_PERFCTR_CLOCK_CYCLES = 0x11,
-
- ARMV7_PERFCTR_PC_BRANCH_MIS_USED = 0x12,
+ ARMV7_PERFCTR_PC_BRANCH_PRED = 0x12,
+ ARMV7_PERFCTR_MEM_ACCESS = 0x13,
+ ARMV7_PERFCTR_L1_ICACHE_ACCESS = 0x14,
+ ARMV7_PERFCTR_L1_DCACHE_WB = 0x15,
+ ARMV7_PERFCTR_L2_DCACHE_ACCESS = 0x16,
+ ARMV7_PERFCTR_L2_DCACHE_REFILL = 0x17,
+ ARMV7_PERFCTR_L2_DCACHE_WB = 0x18,
+ ARMV7_PERFCTR_BUS_ACCESS = 0x19,
+ ARMV7_PERFCTR_MEMORY_ERROR = 0x1A,
+ ARMV7_PERFCTR_INSTR_SPEC = 0x1B,
+ ARMV7_PERFCTR_TTBR_WRITE = 0x1C,
+ ARMV7_PERFCTR_BUS_CYCLES = 0x1D,
ARMV7_PERFCTR_CPU_CYCLES = 0xFF
};
/* ARMv7 Cortex-A8 specific event types */
enum armv7_a8_perf_types {
- ARMV7_PERFCTR_INSTR_EXECUTED = 0x08,
-
- ARMV7_PERFCTR_PC_PROC_RETURN = 0x0E,
-
ARMV7_PERFCTR_WRITE_BUFFER_FULL = 0x40,
ARMV7_PERFCTR_L2_STORE_MERGED = 0x41,
ARMV7_PERFCTR_L2_STORE_BUFF = 0x42,
@@ -138,6 +153,39 @@ enum armv7_a9_perf_types {
ARMV7_PERFCTR_PLE_RQST_PROG = 0xA5
};
+/* ARMv7 Cortex-A5 specific event types */
+enum armv7_a5_perf_types {
+ ARMV7_PERFCTR_IRQ_TAKEN = 0x86,
+ ARMV7_PERFCTR_FIQ_TAKEN = 0x87,
+
+ ARMV7_PERFCTR_EXT_MEM_RQST = 0xc0,
+ ARMV7_PERFCTR_NC_EXT_MEM_RQST = 0xc1,
+ ARMV7_PERFCTR_PREFETCH_LINEFILL = 0xc2,
+ ARMV7_PERFCTR_PREFETCH_LINEFILL_DROP = 0xc3,
+ ARMV7_PERFCTR_ENTER_READ_ALLOC = 0xc4,
+ ARMV7_PERFCTR_READ_ALLOC = 0xc5,
+
+ ARMV7_PERFCTR_STALL_SB_FULL = 0xc9,
+};
+
+/* ARMv7 Cortex-A15 specific event types */
+enum armv7_a15_perf_types {
+ ARMV7_PERFCTR_L1_DCACHE_READ_ACCESS = 0x40,
+ ARMV7_PERFCTR_L1_DCACHE_WRITE_ACCESS = 0x41,
+ ARMV7_PERFCTR_L1_DCACHE_READ_REFILL = 0x42,
+ ARMV7_PERFCTR_L1_DCACHE_WRITE_REFILL = 0x43,
+
+ ARMV7_PERFCTR_L1_DTLB_READ_REFILL = 0x4C,
+ ARMV7_PERFCTR_L1_DTLB_WRITE_REFILL = 0x4D,
+
+ ARMV7_PERFCTR_L2_DCACHE_READ_ACCESS = 0x50,
+ ARMV7_PERFCTR_L2_DCACHE_WRITE_ACCESS = 0x51,
+ ARMV7_PERFCTR_L2_DCACHE_READ_REFILL = 0x52,
+ ARMV7_PERFCTR_L2_DCACHE_WRITE_REFILL = 0x53,
+
+ ARMV7_PERFCTR_SPEC_PC_WRITE = 0x76,
+};
+
/*
* Cortex-A8 HW events mapping
*
@@ -207,11 +255,6 @@ static const unsigned armv7_a8_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
},
},
[C(DTLB)] = {
- /*
- * Only ITLB misses and DTLB refills are supported.
- * If users want the DTLB refills misses a raw counter
- * must be used.
- */
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
@@ -323,11 +366,6 @@ static const unsigned armv7_a9_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
},
},
[C(DTLB)] = {
- /*
- * Only ITLB misses and DTLB refills are supported.
- * If users want the DTLB refills misses a raw counter
- * must be used.
- */
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
@@ -374,6 +412,242 @@ static const unsigned armv7_a9_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
};
/*
+ * Cortex-A5 HW events mapping
+ */
+static const unsigned armv7_a5_perf_map[PERF_COUNT_HW_MAX] = {
+ [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
+ [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
+ [PERF_COUNT_HW_CACHE_REFERENCES] = HW_OP_UNSUPPORTED,
+ [PERF_COUNT_HW_CACHE_MISSES] = HW_OP_UNSUPPORTED,
+ [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE,
+ [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
+ [PERF_COUNT_HW_BUS_CYCLES] = HW_OP_UNSUPPORTED,
+};
+
+static const unsigned armv7_a5_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
+ [PERF_COUNT_HW_CACHE_OP_MAX]
+ [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
+ [C(L1D)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)]
+ = ARMV7_PERFCTR_DCACHE_ACCESS,
+ [C(RESULT_MISS)]
+ = ARMV7_PERFCTR_DCACHE_REFILL,
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)]
+ = ARMV7_PERFCTR_DCACHE_ACCESS,
+ [C(RESULT_MISS)]
+ = ARMV7_PERFCTR_DCACHE_REFILL,
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)]
+ = ARMV7_PERFCTR_PREFETCH_LINEFILL,
+ [C(RESULT_MISS)]
+ = ARMV7_PERFCTR_PREFETCH_LINEFILL_DROP,
+ },
+ },
+ [C(L1I)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
+ [C(RESULT_MISS)] = ARMV7_PERFCTR_IFETCH_MISS,
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
+ [C(RESULT_MISS)] = ARMV7_PERFCTR_IFETCH_MISS,
+ },
+ /*
+ * The prefetch counters don't differentiate between the I
+ * side and the D side.
+ */
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)]
+ = ARMV7_PERFCTR_PREFETCH_LINEFILL,
+ [C(RESULT_MISS)]
+ = ARMV7_PERFCTR_PREFETCH_LINEFILL_DROP,
+ },
+ },
+ [C(LL)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ },
+ [C(DTLB)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ },
+ [C(ITLB)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ },
+ [C(BPU)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
+ [C(RESULT_MISS)]
+ = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
+ [C(RESULT_MISS)]
+ = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ },
+};
+
+/*
+ * Cortex-A15 HW events mapping
+ */
+static const unsigned armv7_a15_perf_map[PERF_COUNT_HW_MAX] = {
+ [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
+ [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
+ [PERF_COUNT_HW_CACHE_REFERENCES] = HW_OP_UNSUPPORTED,
+ [PERF_COUNT_HW_CACHE_MISSES] = HW_OP_UNSUPPORTED,
+ [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_SPEC_PC_WRITE,
+ [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
+ [PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_BUS_CYCLES,
+};
+
+static const unsigned armv7_a15_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
+ [PERF_COUNT_HW_CACHE_OP_MAX]
+ [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
+ [C(L1D)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)]
+ = ARMV7_PERFCTR_L1_DCACHE_READ_ACCESS,
+ [C(RESULT_MISS)]
+ = ARMV7_PERFCTR_L1_DCACHE_READ_REFILL,
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)]
+ = ARMV7_PERFCTR_L1_DCACHE_WRITE_ACCESS,
+ [C(RESULT_MISS)]
+ = ARMV7_PERFCTR_L1_DCACHE_WRITE_REFILL,
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ },
+ [C(L1I)] = {
+ /*
+ * Not all performance counters differentiate between read
+ * and write accesses/misses so we're not always strictly
+ * correct, but it's the best we can do. Writes and reads get
+ * combined in these cases.
+ */
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
+ [C(RESULT_MISS)] = ARMV7_PERFCTR_IFETCH_MISS,
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
+ [C(RESULT_MISS)] = ARMV7_PERFCTR_IFETCH_MISS,
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ },
+ [C(LL)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)]
+ = ARMV7_PERFCTR_L2_DCACHE_READ_ACCESS,
+ [C(RESULT_MISS)]
+ = ARMV7_PERFCTR_L2_DCACHE_READ_REFILL,
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)]
+ = ARMV7_PERFCTR_L2_DCACHE_WRITE_ACCESS,
+ [C(RESULT_MISS)]
+ = ARMV7_PERFCTR_L2_DCACHE_WRITE_REFILL,
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ },
+ [C(DTLB)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)]
+ = ARMV7_PERFCTR_L1_DTLB_READ_REFILL,
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)]
+ = ARMV7_PERFCTR_L1_DTLB_WRITE_REFILL,
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ },
+ [C(ITLB)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ },
+ [C(BPU)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
+ [C(RESULT_MISS)]
+ = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
+ [C(RESULT_MISS)]
+ = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ },
+};
+
+/*
* Perf Events counters
*/
enum armv7_counters {
@@ -905,6 +1179,26 @@ static const struct arm_pmu *__init armv7_a9_pmu_init(void)
armv7pmu.num_events = armv7_read_num_pmnc_events();
return &armv7pmu;
}
+
+static const struct arm_pmu *__init armv7_a5_pmu_init(void)
+{
+ armv7pmu.id = ARM_PERF_PMU_ID_CA5;
+ armv7pmu.name = "ARMv7 Cortex-A5";
+ armv7pmu.cache_map = &armv7_a5_perf_cache_map;
+ armv7pmu.event_map = &armv7_a5_perf_map;
+ armv7pmu.num_events = armv7_read_num_pmnc_events();
+ return &armv7pmu;
+}
+
+static const struct arm_pmu *__init armv7_a15_pmu_init(void)
+{
+ armv7pmu.id = ARM_PERF_PMU_ID_CA15;
+ armv7pmu.name = "ARMv7 Cortex-A15";
+ armv7pmu.cache_map = &armv7_a15_perf_cache_map;
+ armv7pmu.event_map = &armv7_a15_perf_map;
+ armv7pmu.num_events = armv7_read_num_pmnc_events();
+ return &armv7pmu;
+}
#else
static const struct arm_pmu *__init armv7_a8_pmu_init(void)
{
@@ -915,4 +1209,14 @@ static const struct arm_pmu *__init armv7_a9_pmu_init(void)
{
return NULL;
}
+
+static const struct arm_pmu *__init armv7_a5_pmu_init(void)
+{
+ return NULL;
+}
+
+static const struct arm_pmu *__init armv7_a15_pmu_init(void)
+{
+ return NULL;
+}
#endif /* CONFIG_CPU_V7 */
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