From: Ian Rogers <irogers@google.com>
Date: Tue, 2 May 2023 15:38:17 -0700
Subject: perf test: Test more sysfs events
Git-commit: 5a52817e388bc2beaceff7b2059988987491cb59
Patch-mainline: v6.5-rc1
References: perf-v6.7 (jsc#PED-6012 jsc#PED-6121)
Parse events for all PMUs, and not just cpu, in test "Parsing of all
PMU events from sysfs".
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Edward Baker <edward.baker@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kang Minchul <tegongkang@gmail.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Link: https://lore.kernel.org/r/20230502223851.2234828-11-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Tony Jones <tonyj@suse.de>
---
tools/perf/tests/parse-events.c | 129 ++++++++++++++++++++++------------------
1 file changed, 71 insertions(+), 58 deletions(-)
diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c
index 8068cfd89b84..3721a2182f45 100644
--- a/tools/perf/tests/parse-events.c
+++ b/tools/perf/tests/parse-events.c
@@ -7,6 +7,7 @@
#include "debug.h"
#include "pmu.h"
#include "pmu-hybrid.h"
+#include "pmus.h"
#include <dirent.h>
#include <errno.h>
#include "fncache.h"
@@ -558,7 +559,8 @@ static int test__checkevent_pmu_events(struct evlist *evlist)
struct evsel *evsel = evlist__first(evlist);
TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries);
- TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->core.attr.type);
+ TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->core.attr.type ||
+ strcmp(evsel->pmu_name, "cpu"));
TEST_ASSERT_VAL("wrong exclude_user",
!evsel->core.attr.exclude_user);
TEST_ASSERT_VAL("wrong exclude_kernel",
@@ -590,7 +592,8 @@ static int test__checkevent_pmu_events_mix(struct evlist *evlist)
/* cpu/pmu-event/u*/
evsel = evsel__next(evsel);
TEST_ASSERT_VAL("wrong number of entries", 2 == evlist->core.nr_entries);
- TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->core.attr.type);
+ TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->core.attr.type ||
+ strcmp(evsel->pmu_name, "cpu"));
TEST_ASSERT_VAL("wrong exclude_user",
!evsel->core.attr.exclude_user);
TEST_ASSERT_VAL("wrong exclude_kernel",
@@ -2225,74 +2228,84 @@ static int test_pmu(void)
static int test__pmu_events(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
{
- struct stat st;
- char path[PATH_MAX];
- struct dirent *ent;
- DIR *dir;
- int ret;
-
- if (!test_pmu())
- return TEST_SKIP;
+ struct perf_pmu *pmu;
+ int ret = TEST_OK;
- snprintf(path, PATH_MAX, "%s/bus/event_source/devices/cpu/events/",
- sysfs__mountpoint());
+ if (list_empty(&pmus))
+ perf_pmu__scan(NULL);
- ret = stat(path, &st);
- if (ret) {
- pr_debug("omitting PMU cpu events tests: %s\n", path);
- return TEST_OK;
- }
+ perf_pmus__for_each_pmu(pmu) {
+ struct stat st;
+ char path[PATH_MAX];
+ struct dirent *ent;
+ DIR *dir;
+ int err;
- dir = opendir(path);
- if (!dir) {
- pr_debug("can't open pmu event dir: %s\n", path);
- return TEST_FAIL;
- }
+ snprintf(path, PATH_MAX, "%s/bus/event_source/devices/%s/events/",
+ sysfs__mountpoint(), pmu->name);
- ret = TEST_OK;
- while ((ent = readdir(dir))) {
- struct evlist_test e = { .name = NULL, };
- char name[2 * NAME_MAX + 1 + 12 + 3];
- int test_ret;
+ err = stat(path, &st);
+ if (err) {
+ pr_debug("skipping PMU %s events tests: %s\n", pmu->name, path);
+ continue;
+ }
- /* Names containing . are special and cannot be used directly */
- if (strchr(ent->d_name, '.'))
+ dir = opendir(path);
+ if (!dir) {
+ pr_debug("can't open pmu event dir: %s\n", path);
+ ret = combine_test_results(ret, TEST_SKIP);
continue;
+ }
- snprintf(name, sizeof(name), "cpu/event=%s/u", ent->d_name);
+ while ((ent = readdir(dir))) {
+ struct evlist_test e = { .name = NULL, };
+ char name[2 * NAME_MAX + 1 + 12 + 3];
+ int test_ret;
- e.name = name;
- e.check = test__checkevent_pmu_events;
+ /* Names containing . are special and cannot be used directly */
+ if (strchr(ent->d_name, '.'))
+ continue;
- test_ret = test_event(&e);
- if (test_ret != TEST_OK) {
- pr_debug("Test PMU event failed for '%s'", name);
- ret = combine_test_results(ret, test_ret);
- }
- /*
- * Names containing '-' are recognized as prefixes and suffixes
- * due to '-' being a legacy PMU separator. This fails when the
- * prefix or suffix collides with an existing legacy token. For
- * example, branch-brs has a prefix (branch) that collides with
- * a PE_NAME_CACHE_TYPE token causing a parse error as a suffix
- * isn't expected after this. As event names in the config
- * slashes are allowed a '-' in the name we check this works
- * above.
- */
- if (strchr(ent->d_name, '-'))
- continue;
+ snprintf(name, sizeof(name), "%s/event=%s/u", pmu->name, ent->d_name);
- snprintf(name, sizeof(name), "%s:u,cpu/event=%s/u", ent->d_name, ent->d_name);
- e.name = name;
- e.check = test__checkevent_pmu_events_mix;
- test_ret = test_event(&e);
- if (test_ret != TEST_OK) {
- pr_debug("Test PMU event failed for '%s'", name);
- ret = combine_test_results(ret, test_ret);
+ e.name = name;
+ e.check = test__checkevent_pmu_events;
+
+ test_ret = test_event(&e);
+ if (test_ret != TEST_OK) {
+ pr_debug("Test PMU event failed for '%s'", name);
+ ret = combine_test_results(ret, test_ret);
+ }
+
+ if (!is_pmu_core(pmu->name))
+ continue;
+
+ /*
+ * Names containing '-' are recognized as prefixes and suffixes
+ * due to '-' being a legacy PMU separator. This fails when the
+ * prefix or suffix collides with an existing legacy token. For
+ * example, branch-brs has a prefix (branch) that collides with
+ * a PE_NAME_CACHE_TYPE token causing a parse error as a suffix
+ * isn't expected after this. As event names in the config
+ * slashes are allowed a '-' in the name we check this works
+ * above.
+ */
+ if (strchr(ent->d_name, '-'))
+ continue;
+
+ snprintf(name, sizeof(name), "%s:u,%s/event=%s/u",
+ ent->d_name, pmu->name, ent->d_name);
+ e.name = name;
+ e.check = test__checkevent_pmu_events_mix;
+ test_ret = test_event(&e);
+ if (test_ret != TEST_OK) {
+ pr_debug("Test PMU event failed for '%s'", name);
+ ret = combine_test_results(ret, test_ret);
+ }
}
- }
- closedir(dir);
+ closedir(dir);
+ }
return ret;
}