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-rw-r--r--tools/perf/tests/parse-metric.c317
1 files changed, 317 insertions, 0 deletions
diff --git a/tools/perf/tests/parse-metric.c b/tools/perf/tests/parse-metric.c
new file mode 100644
index 000000000..68f5a2a03
--- /dev/null
+++ b/tools/perf/tests/parse-metric.c
@@ -0,0 +1,317 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/compiler.h>
+#include <string.h>
+#include <perf/cpumap.h>
+#include <perf/evlist.h>
+#include "metricgroup.h"
+#include "tests.h"
+#include "pmu-events/pmu-events.h"
+#include "evlist.h"
+#include "rblist.h"
+#include "debug.h"
+#include "expr.h"
+#include "stat.h"
+#include "pmu.h"
+
+struct value {
+ const char *event;
+ u64 val;
+};
+
+static u64 find_value(const char *name, struct value *values)
+{
+ struct value *v = values;
+
+ while (v->event) {
+ if (!strcmp(name, v->event))
+ return v->val;
+ v++;
+ }
+ return 0;
+}
+
+static void load_runtime_stat(struct runtime_stat *st, struct evlist *evlist,
+ struct value *vals)
+{
+ struct evsel *evsel;
+ u64 count;
+
+ perf_stat__reset_shadow_stats();
+ evlist__for_each_entry(evlist, evsel) {
+ count = find_value(evsel->name, vals);
+ perf_stat__update_shadow_stats(evsel, count, 0, st);
+ if (!strcmp(evsel->name, "duration_time"))
+ update_stats(&walltime_nsecs_stats, count);
+ }
+}
+
+static double compute_single(struct rblist *metric_events, struct evlist *evlist,
+ struct runtime_stat *st, const char *name)
+{
+ struct metric_expr *mexp;
+ struct metric_event *me;
+ struct evsel *evsel;
+
+ evlist__for_each_entry(evlist, evsel) {
+ me = metricgroup__lookup(metric_events, evsel, false);
+ if (me != NULL) {
+ list_for_each_entry (mexp, &me->head, nd) {
+ if (strcmp(mexp->metric_name, name))
+ continue;
+ return test_generic_metric(mexp, 0, st);
+ }
+ }
+ }
+ return 0.;
+}
+
+static int __compute_metric(const char *name, struct value *vals,
+ const char *name1, double *ratio1,
+ const char *name2, double *ratio2)
+{
+ struct rblist metric_events = {
+ .nr_entries = 0,
+ };
+ const struct pmu_events_table *pme_test;
+ struct perf_cpu_map *cpus;
+ struct runtime_stat st;
+ struct evlist *evlist;
+ int err;
+
+ /*
+ * We need to prepare evlist for stat mode running on CPU 0
+ * because that's where all the stats are going to be created.
+ */
+ evlist = evlist__new();
+ if (!evlist)
+ return -ENOMEM;
+
+ cpus = perf_cpu_map__new("0");
+ if (!cpus) {
+ evlist__delete(evlist);
+ return -ENOMEM;
+ }
+
+ perf_evlist__set_maps(&evlist->core, cpus, NULL);
+ runtime_stat__init(&st);
+
+ /* Parse the metric into metric_events list. */
+ pme_test = find_core_events_table("testarch", "testcpu");
+ err = metricgroup__parse_groups_test(evlist, pme_test, name,
+ false, false,
+ &metric_events);
+ if (err)
+ goto out;
+
+ err = evlist__alloc_stats(evlist, false);
+ if (err)
+ goto out;
+
+ /* Load the runtime stats with given numbers for events. */
+ load_runtime_stat(&st, evlist, vals);
+
+ /* And execute the metric */
+ if (name1 && ratio1)
+ *ratio1 = compute_single(&metric_events, evlist, &st, name1);
+ if (name2 && ratio2)
+ *ratio2 = compute_single(&metric_events, evlist, &st, name2);
+
+out:
+ /* ... cleanup. */
+ metricgroup__rblist_exit(&metric_events);
+ runtime_stat__exit(&st);
+ evlist__free_stats(evlist);
+ perf_cpu_map__put(cpus);
+ evlist__delete(evlist);
+ return err;
+}
+
+static int compute_metric(const char *name, struct value *vals, double *ratio)
+{
+ return __compute_metric(name, vals, name, ratio, NULL, NULL);
+}
+
+static int compute_metric_group(const char *name, struct value *vals,
+ const char *name1, double *ratio1,
+ const char *name2, double *ratio2)
+{
+ return __compute_metric(name, vals, name1, ratio1, name2, ratio2);
+}
+
+static int test_ipc(void)
+{
+ double ratio;
+ struct value vals[] = {
+ { .event = "inst_retired.any", .val = 300 },
+ { .event = "cpu_clk_unhalted.thread", .val = 200 },
+ { .event = NULL, },
+ };
+
+ TEST_ASSERT_VAL("failed to compute metric",
+ compute_metric("IPC", vals, &ratio) == 0);
+
+ TEST_ASSERT_VAL("IPC failed, wrong ratio",
+ ratio == 1.5);
+ return 0;
+}
+
+static int test_frontend(void)
+{
+ double ratio;
+ struct value vals[] = {
+ { .event = "idq_uops_not_delivered.core", .val = 300 },
+ { .event = "cpu_clk_unhalted.thread", .val = 200 },
+ { .event = "cpu_clk_unhalted.one_thread_active", .val = 400 },
+ { .event = "cpu_clk_unhalted.ref_xclk", .val = 600 },
+ { .event = NULL, },
+ };
+
+ TEST_ASSERT_VAL("failed to compute metric",
+ compute_metric("Frontend_Bound_SMT", vals, &ratio) == 0);
+
+ TEST_ASSERT_VAL("Frontend_Bound_SMT failed, wrong ratio",
+ ratio == 0.45);
+ return 0;
+}
+
+static int test_cache_miss_cycles(void)
+{
+ double ratio;
+ struct value vals[] = {
+ { .event = "l1d-loads-misses", .val = 300 },
+ { .event = "l1i-loads-misses", .val = 200 },
+ { .event = "inst_retired.any", .val = 400 },
+ { .event = NULL, },
+ };
+
+ TEST_ASSERT_VAL("failed to compute metric",
+ compute_metric("cache_miss_cycles", vals, &ratio) == 0);
+
+ TEST_ASSERT_VAL("cache_miss_cycles failed, wrong ratio",
+ ratio == 1.25);
+ 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 },
+ { .event = NULL, },
+ };
+
+ 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;
+}
+
+static int test_recursion_fail(void)
+{
+ double ratio;
+ struct value vals[] = {
+ { .event = "inst_retired.any", .val = 300 },
+ { .event = "cpu_clk_unhalted.thread", .val = 200 },
+ { .event = NULL, },
+ };
+
+ TEST_ASSERT_VAL("failed to find recursion",
+ compute_metric("M1", vals, &ratio) == -1);
+
+ TEST_ASSERT_VAL("failed to find recursion",
+ compute_metric("M3", vals, &ratio) == -1);
+ return 0;
+}
+
+static int test_memory_bandwidth(void)
+{
+ double ratio;
+ struct value vals[] = {
+ { .event = "l1d.replacement", .val = 4000000 },
+ { .event = "duration_time", .val = 200000000 },
+ { .event = NULL, },
+ };
+
+ TEST_ASSERT_VAL("failed to compute metric",
+ compute_metric("L1D_Cache_Fill_BW", vals, &ratio) == 0);
+ TEST_ASSERT_VAL("L1D_Cache_Fill_BW, wrong ratio",
+ 1.28 == ratio);
+
+ return 0;
+}
+
+static int test_metric_group(void)
+{
+ double ratio1, ratio2;
+ struct value vals[] = {
+ { .event = "cpu_clk_unhalted.thread", .val = 200 },
+ { .event = "l1d-loads-misses", .val = 300 },
+ { .event = "l1i-loads-misses", .val = 200 },
+ { .event = "inst_retired.any", .val = 400 },
+ { .event = NULL, },
+ };
+
+ TEST_ASSERT_VAL("failed to find recursion",
+ compute_metric_group("group1", vals,
+ "IPC", &ratio1,
+ "cache_miss_cycles", &ratio2) == 0);
+
+ TEST_ASSERT_VAL("group IPC failed, wrong ratio",
+ ratio1 == 2.0);
+
+ TEST_ASSERT_VAL("group cache_miss_cycles failed, wrong ratio",
+ ratio2 == 1.25);
+ return 0;
+}
+
+static int test__parse_metric(struct test_suite *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("DCache_L2 failed", test_dcache_l2() == 0);
+ TEST_ASSERT_VAL("recursion fail failed", test_recursion_fail() == 0);
+ TEST_ASSERT_VAL("Memory bandwidth", test_memory_bandwidth() == 0);
+
+ if (!perf_pmu__has_hybrid()) {
+ TEST_ASSERT_VAL("cache_miss_cycles failed", test_cache_miss_cycles() == 0);
+ TEST_ASSERT_VAL("test metric group", test_metric_group() == 0);
+ }
+ return 0;
+}
+
+DEFINE_SUITE("Parse and process metrics", parse_metric);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-09 12:49:40 +0000