Adding test that compute DCache_L2 metrics with other related metrics in it.
Signed-off-by: Jiri Olsa <[email protected]> --- tools/perf/tests/parse-metric.c | 71 +++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) diff --git a/tools/perf/tests/parse-metric.c b/tools/perf/tests/parse-metric.c index 28f33893338b..b50e2a3f3b73 100644 --- a/tools/perf/tests/parse-metric.c +++ b/tools/perf/tests/parse-metric.c @@ -36,6 +36,27 @@ static struct pmu_event pme_test[] = { .metric_expr = "(dcache_miss_cpi + icache_miss_cycles)", .metric_name = "cache_miss_cycles", }, +{ + .metric_expr = "L2_RQSTS.DEMAND_DATA_RD_HIT + L2_RQSTS.PF_HIT + L2_RQSTS.RFO_HIT", + .metric_name = "DCache_L2_All_Hits", +}, +{ + .metric_expr = "max(L2_RQSTS.ALL_DEMAND_DATA_RD - L2_RQSTS.DEMAND_DATA_RD_HIT, 0) + " + "L2_RQSTS.PF_MISS + L2_RQSTS.RFO_MISS", + .metric_name = "DCache_L2_All_Miss", +}, +{ + .metric_expr = "DCache_L2_All_Hits + DCache_L2_All_Miss", + .metric_name = "DCache_L2_All", +}, +{ + .metric_expr = "d_ratio(DCache_L2_All_Hits, DCache_L2_All)", + .metric_name = "DCache_L2_Hits", +}, +{ + .metric_expr = "d_ratio(DCache_L2_All_Miss, DCache_L2_All)", + .metric_name = "DCache_L2_Misses", +}, }; static struct pmu_events_map map = { @@ -194,10 +215,60 @@ static int test_cache_miss_cycles(void) return 0; } + +/* + * DCache_L2_All_Hits = L2_RQSTS.DEMAND_DATA_RD_HIT + L2_RQSTS.PF_HIT + L2_RQSTS.RFO_HI + * DCache_L2_All_Miss = MAX(L2_RQSTS.ALL_DEMAND_DATA_RD - L2_RQSTS.DEMAND_DATA_RD_HIT, 0) + + * L2_RQSTS.PF_MISS + L2_RQSTS.RFO_MISS + * DCache_L2_All = DCache_L2_All_Hits + DCache_L2_All_Miss + * DCache_L2_Hits = d_ratio(DCache_L2_All_Hits, DCache_L2_All) + * DCache_L2_Misses = d_ratio(DCache_L2_All_Miss, DCache_L2_All) + * + * L2_RQSTS.DEMAND_DATA_RD_HIT = 100 + * L2_RQSTS.PF_HIT = 200 + * L2_RQSTS.RFO_HI = 300 + * L2_RQSTS.ALL_DEMAND_DATA_RD = 400 + * L2_RQSTS.PF_MISS = 500 + * L2_RQSTS.RFO_MISS = 600 + * + * DCache_L2_All_Hits = 600 + * DCache_L2_All_Miss = MAX(400 - 100, 0) + 500 + 600 = 1400 + * DCache_L2_All = 600 + 1400 = 2000 + * DCache_L2_Hits = 600 / 2000 = 0.3 + * DCache_L2_Misses = 1400 / 2000 = 0.7 + */ +static int test_dcache_l2(void) +{ + double ratio; + struct value vals[] = { + { .event = "L2_RQSTS.DEMAND_DATA_RD_HIT", .val = 100 }, + { .event = "L2_RQSTS.PF_HIT", .val = 200 }, + { .event = "L2_RQSTS.RFO_HIT", .val = 300 }, + { .event = "L2_RQSTS.ALL_DEMAND_DATA_RD", .val = 400 }, + { .event = "L2_RQSTS.PF_MISS", .val = 500 }, + { .event = "L2_RQSTS.RFO_MISS", .val = 600 }, + { 0 }, + }; + + TEST_ASSERT_VAL("failed to compute metric", + compute_metric("DCache_L2_Hits", vals, &ratio) == 0); + + TEST_ASSERT_VAL("DCache_L2_Hits failed, wrong ratio", + ratio == 0.3); + + TEST_ASSERT_VAL("failed to compute metric", + compute_metric("DCache_L2_Misses", vals, &ratio) == 0); + + TEST_ASSERT_VAL("DCache_L2_Misses failed, wrong ratio", + ratio == 0.7); + return 0; +} + int test__parse_metric(struct test *test __maybe_unused, int subtest __maybe_unused) { TEST_ASSERT_VAL("IPC failed", test_ipc() == 0); TEST_ASSERT_VAL("frontend failed", test_frontend() == 0); TEST_ASSERT_VAL("cache_miss_cycles failed", test_cache_miss_cycles() == 0); + TEST_ASSERT_VAL("DCache_L2 failed", test_dcache_l2() == 0); return 0; } -- 2.25.4
