ARC: perf: support cache hit/miss ratio
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
diff --git a/arch/arc/include/asm/perf_event.h b/arch/arc/include/asm/perf_event.h
index 1c45667..2b8880e 100644
--- a/arch/arc/include/asm/perf_event.h
+++ b/arch/arc/include/asm/perf_event.h
@@ -54,7 +54,10 @@
#define PERF_COUNT_ARC_BPOK (PERF_COUNT_HW_MAX + 3)
#define PERF_COUNT_ARC_EDTLB (PERF_COUNT_HW_MAX + 4)
#define PERF_COUNT_ARC_EITLB (PERF_COUNT_HW_MAX + 5)
-#define PERF_COUNT_ARC_HW_MAX (PERF_COUNT_HW_MAX + 6)
+#define PERF_COUNT_ARC_LDC (PERF_COUNT_HW_MAX + 6)
+#define PERF_COUNT_ARC_STC (PERF_COUNT_HW_MAX + 7)
+
+#define PERF_COUNT_ARC_HW_MAX (PERF_COUNT_HW_MAX + 8)
/*
* Some ARC pct quirks:
@@ -96,6 +99,9 @@
[PERF_COUNT_ARC_BPOK] = "bpok", /* NP-NT, PT-T, PNT-NT */
[PERF_COUNT_HW_BRANCH_MISSES] = "bpfail", /* NP-T, PT-NT, PNT-T */
+ [PERF_COUNT_ARC_LDC] = "imemrdc", /* Instr: mem read cached */
+ [PERF_COUNT_ARC_STC] = "imemwrc", /* Instr: mem write cached */
+
[PERF_COUNT_ARC_DCLM] = "dclm", /* D-cache Load Miss */
[PERF_COUNT_ARC_DCSM] = "dcsm", /* D-cache Store Miss */
[PERF_COUNT_ARC_ICM] = "icm", /* I-cache Miss */
@@ -109,11 +115,11 @@
static const unsigned arc_pmu_cache_map[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
[C(L1D)] = {
[C(OP_READ)] = {
- [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_ACCESS)] = PERF_COUNT_ARC_LDC,
[C(RESULT_MISS)] = PERF_COUNT_ARC_DCLM,
},
[C(OP_WRITE)] = {
- [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_ACCESS)] = PERF_COUNT_ARC_STC,
[C(RESULT_MISS)] = PERF_COUNT_ARC_DCSM,
},
[C(OP_PREFETCH)] = {
@@ -123,7 +129,7 @@
},
[C(L1I)] = {
[C(OP_READ)] = {
- [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_ACCESS)] = PERF_COUNT_HW_INSTRUCTIONS,
[C(RESULT_MISS)] = PERF_COUNT_ARC_ICM,
},
[C(OP_WRITE)] = {
@@ -151,9 +157,10 @@
},
[C(DTLB)] = {
[C(OP_READ)] = {
- [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_ACCESS)] = PERF_COUNT_ARC_LDC,
[C(RESULT_MISS)] = PERF_COUNT_ARC_EDTLB,
},
+ /* DTLB LD/ST Miss not segregated by h/w*/
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,