This is a note to let you know that I've just added the patch titled
perf tests: Fix Convert perf time to TSC test for hybrid
to the 5.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
perf-tests-fix-convert-perf-time-to-tsc-test-for-hyb.patch
and it can be found in the queue-5.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 41ecbc96b6e85fc568a739b8e98d8e8401a1b359
Author: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Date: Wed Jul 13 15:34:59 2022 +0300
perf tests: Fix Convert perf time to TSC test for hybrid
[ Upstream commit deb44a6249f696106645c63c0603eab08a6122af ]
The test does not always correctly determine the number of events for
hybrids, nor allow for more than 1 evsel when parsing.
Fix by iterating the events actually created and getting the correct
evsel for the events processed.
Fixes: d9da6f70eb235110 ("perf tests: Support 'Convert perf time to TSC' test for hybrid")
Reviewed-by: Kan Liang <kan.liang@xxxxxxxxxxxxxxx>
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Ian Rogers <irogers@xxxxxxxxxx>
Cc: Jin Yao <yao.jin@xxxxxxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Thomas Richter <tmricht@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220713123459.24145-3-adrian.hunter@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/tools/perf/tests/perf-time-to-tsc.c b/tools/perf/tests/perf-time-to-tsc.c
index 8d6d60173693..7c7d20fc503a 100644
--- a/tools/perf/tests/perf-time-to-tsc.c
+++ b/tools/perf/tests/perf-time-to-tsc.c
@@ -20,8 +20,6 @@
#include "tsc.h"
#include "mmap.h"
#include "tests.h"
-#include "pmu.h"
-#include "pmu-hybrid.h"
/*
* Except x86_64/i386 and Arm64, other archs don't support TSC in perf. Just
@@ -106,18 +104,8 @@ static int test__perf_time_to_tsc(struct test_suite *test __maybe_unused, int su
evlist__config(evlist, &opts, NULL);
- evsel = evlist__first(evlist);
-
- evsel->core.attr.comm = 1;
- evsel->core.attr.disabled = 1;
- evsel->core.attr.enable_on_exec = 0;
-
- /*
- * For hybrid "cycles:u", it creates two events.
- * Init the second evsel here.
- */
- if (perf_pmu__has_hybrid() && perf_pmu__hybrid_mounted("cpu_atom")) {
- evsel = evsel__next(evsel);
+ /* For hybrid "cycles:u", it creates two events */
+ evlist__for_each_entry(evlist, evsel) {
evsel->core.attr.comm = 1;
evsel->core.attr.disabled = 1;
evsel->core.attr.enable_on_exec = 0;
@@ -170,10 +158,12 @@ static int test__perf_time_to_tsc(struct test_suite *test __maybe_unused, int su
goto next_event;
if (strcmp(event->comm.comm, comm1) == 0) {
+ CHECK_NOT_NULL__(evsel = evlist__event2evsel(evlist, event));
CHECK__(evsel__parse_sample(evsel, event, &sample));
comm1_time = sample.time;
}
if (strcmp(event->comm.comm, comm2) == 0) {
+ CHECK_NOT_NULL__(evsel = evlist__event2evsel(evlist, event));
CHECK__(evsel__parse_sample(evsel, event, &sample));
comm2_time = sample.time;
}
