Adding new test that process metrics code and checks
the expected results. Starting with easy ipc metric.
Acked-by: Ian Rogers <irog...@google.com>
Signed-off-by: Jiri Olsa <jo...@kernel.org>
---
tools/perf/tests/Build | 1 +
tools/perf/tests/builtin-test.c | 4 +
tools/perf/tests/parse-metric.c | 145 ++++++++++++++++++++++++++++++++
tools/perf/tests/tests.h | 1 +
4 files changed, 151 insertions(+)
create mode 100644 tools/perf/tests/parse-metric.c
diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build
index cd00498a5dce..84352fc49a20 100644
--- a/tools/perf/tests/Build
+++ b/tools/perf/tests/Build
@@ -59,6 +59,7 @@ perf-y += genelf.o
perf-y += api-io.o
perf-y += demangle-java-test.o
perf-y += pfm.o
+perf-y += parse-metric.o
$(OUTPUT)tests/llvm-src-base.c: tests/bpf-script-example.c tests/Build
$(call rule_mkdir)
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index da5b6cc23f25..d328caaba45d 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -337,6 +337,10 @@ static struct test generic_tests[] = {
.desc = "Demangle Java",
.func = test__demangle_java,
},
+ {
+ .desc = "Parse and process metrics",
+ .func = test__parse_metric,
+ },
{
.func = NULL,
},
diff --git a/tools/perf/tests/parse-metric.c b/tools/perf/tests/parse-metric.c
new file mode 100644
index 000000000000..717a73fa7446
--- /dev/null
+++ b/tools/perf/tests/parse-metric.c
@@ -0,0 +1,145 @@
+// 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"
+
+static struct pmu_event pme_test[] = {
+{
+ .metric_expr = "inst_retired.any / cpu_clk_unhalted.thread",
+ .metric_name = "IPC",
+},
+};
+
+static struct pmu_events_map map = {
+ .cpuid = "test",
+ .version = "1",
+ .type = "core",
+ .table = pme_test,
+};
+
+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;
+
+ evlist__for_each_entry(evlist, evsel) {
+ count = find_value(evsel->name, vals);
+ perf_stat__update_shadow_stats(evsel, count, 0, st);
+ }
+}
+
+static double compute_single(struct rblist *metric_events, struct evlist
*evlist,
+ struct runtime_stat *st)
+{
+ struct evsel *evsel = evlist__first(evlist);
+ struct metric_event *me;
+
+ me = metricgroup__lookup(metric_events, evsel, false);
+ if (me != NULL) {
+ struct metric_expr *mexp;
+
+ mexp = list_first_entry(&me->head, struct metric_expr, nd);
+ return test_generic_metric(mexp, 0, st);
+ }
+ return 0.;
+}
+
+static int compute_metric(const char *name, struct value *vals, double *ratio)
+{
+ struct rblist metric_events = {
+ .nr_entries = 0,
+ };
+ 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)
+ return -ENOMEM;
+
+ perf_evlist__set_maps(&evlist->core, cpus, NULL);
+
+ /* Parse the metric into metric_events list. */
+ err = metricgroup__parse_groups_test(evlist, &map, name,
+ false, false,
+ &metric_events);
+
+ TEST_ASSERT_VAL("failed to parse metric", err == 0);
+
+ if (perf_evlist__alloc_stats(evlist, false))
+ return -1;
+
+ /* Load the runtime stats with given numbers for events. */
+ runtime_stat__init(&st);
+ load_runtime_stat(&st, evlist, vals);
+
+ /* And execute the metric */
+ *ratio = compute_single(&metric_events, evlist, &st);
+
+ /* ... clenup. */
+ metricgroup__rblist_exit(&metric_events);
+ runtime_stat__exit(&st);
+ perf_evlist__free_stats(evlist);
+ perf_cpu_map__put(cpus);
+ evlist__delete(evlist);
+ return 0;
+}
+
+static int test_ipc(void)
+{
+ double ratio;
+ struct value vals[] = {
+ { .event = "inst_retired.any", .val = 300 },
+ { .event = "cpu_clk_unhalted.thread", .val = 200 },
+ { 0 },
+ };
+
+ 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;
+}
+
+int test__parse_metric(struct test *test __maybe_unused, int subtest
__maybe_unused)
+{
+ TEST_ASSERT_VAL("IPC failed", test_ipc() == 0);
+ return 0;
+}
diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
index 76a4e352eaaf..4447a516c689 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -121,6 +121,7 @@ int test__demangle_java(struct test *test, int subtest);
int test__pfm(struct test *test, int subtest);
const char *test__pfm_subtest_get_desc(int subtest);
int test__pfm_subtest_get_nr(void);
+int test__parse_metric(struct test *test, int subtest);
bool test__bp_signal_is_supported(void);
bool test__bp_account_is_supported(void);
--
2.25.4
