diff options
| author | Ian Rogers <irogers@google.com> | 2025-12-03 13:47:05 -0800 |
|---|---|---|
| committer | Namhyung Kim <namhyung@kernel.org> | 2025-12-04 15:42:29 -0800 |
| commit | 5123509628e1ebe74bb5ec801de088f36df07d64 (patch) | |
| tree | 73f5809c814930a532e661dcdc376503e62404ce | |
| parent | c9a8c343ef2f9769a33650b7429f5a83ecba8380 (diff) | |
perf tests stat: Add test for error for an offline CPU
Add a test that if an offline CPU is requested perf stat will fail.
$ perf test -vv "perf stat tests"
101: perf stat tests:
--- start ---
test child forked, pid 46965
Basic stat command test
Basic stat command test [Success]
Null stat command test
Null stat command test [Success]
Offline CPU stat command test (cpu 8)
Offline CPU stat command test [Success]
stat record and report test
stat record and report test [Success]
stat record and script test
stat record and script test [Success]
stat repeat weak groups test
stat repeat weak groups test [Success]
Topdown event group test
Topdown event group test [Success]
Topdown weak groups test
Topdown weak groups test [Skipped event parsing failed]
cputype test
cputype test [Success]
hybrid test
hybrid test [Success]
---- end(0) ----
101: perf stat tests : Ok
Reported-by: Thomas Richter <tmricht@linux.ibm.com>
Closes: https://lore.kernel.org/linux-perf-users/94313b82-888b-4f42-9fb0-4585f9e90080@linux.ibm.com/
Signed-off-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
| -rwxr-xr-x | tools/perf/tests/shell/stat.sh | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/tools/perf/tests/shell/stat.sh b/tools/perf/tests/shell/stat.sh index 7885e875caf4..0b2f0f88ca16 100755 --- a/tools/perf/tests/shell/stat.sh +++ b/tools/perf/tests/shell/stat.sh @@ -27,6 +27,32 @@ test_null_stat() { echo "Null stat command test [Success]" } +find_offline_cpu() { + for i in $(seq 1 4096) + do + if [[ ! -f /sys/devices/system/cpu/cpu$i/online || \ + $(cat /sys/devices/system/cpu/cpu$i/online) == "0" ]] + then + echo $i + return + fi + done + echo "Failed to find offline CPU" + exit 1 +} + +test_offline_cpu_stat() { + cpu=$(find_offline_cpu) + echo "Offline CPU stat command test (cpu $cpu)" + if ! perf stat "-C$cpu" -e cycles true 2>&1 | grep -E -q "No supported events found." + then + echo "Offline CPU stat command test [Failed]" + err=1 + return + fi + echo "Offline CPU stat command test [Success]" +} + test_stat_record_report() { echo "stat record and report test" if ! perf stat record -e task-clock -o - true | perf stat report -i - 2>&1 | \ @@ -224,6 +250,7 @@ test_hybrid() { test_default_stat test_null_stat +test_offline_cpu_stat test_stat_record_report test_stat_record_script test_stat_repeat_weak_groups |