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| author | Dapeng Mi <dapeng1.mi@linux.intel.com> | 2024-09-13 08:47:10 +0000 |
|---|---|---|
| committer | Namhyung Kim <namhyung@kernel.org> | 2024-09-30 15:23:44 -0700 |
| commit | 387892723ad4044ff139ad7433e4dd24f7cfe303 (patch) | |
| tree | ac5432e44170ab785592f86f625f390e7152a4ff | |
| parent | 3b5edc0421e2598a0ae7f0adcd592017f37e3cdf (diff) | |
perf tests: Add leader sampling test in record tests
Add leader sampling test to validate event counts are captured into
record and the count value is consistent.
Suggested-by: Kan Liang <kan.liang@linux.intel.com>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Cc: Yongwei Ma <yongwei.ma@intel.com>
Link: https://lore.kernel.org/r/20240913084712.13861-5-dapeng1.mi@linux.intel.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
| -rwxr-xr-x | tools/perf/tests/shell/record.sh | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh index 048078ee2eca..45baf7910640 100755 --- a/tools/perf/tests/shell/record.sh +++ b/tools/perf/tests/shell/record.sh @@ -17,6 +17,7 @@ skip_test_missing_symbol ${testsym} err=0 perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX) +script_output=$(mktemp /tmp/__perf_test.perf.data.XXXXX.script) testprog="perf test -w thloop" cpu_pmu_dir="/sys/bus/event_source/devices/cpu*" br_cntr_file="/caps/branch_counter_nr" @@ -228,6 +229,32 @@ test_cgroup() { echo "Cgroup sampling test [Success]" } +test_leader_sampling() { + echo "Basic leader sampling test" + if ! perf record -o "${perfdata}" -e "{branches,branches}:Su" perf test -w brstack 2> /dev/null + then + echo "Leader sampling [Failed record]" + err=1 + return + fi + index=0 + perf script -i "${perfdata}" > $script_output + while IFS= read -r line + do + # Check if the two branches counts are equal in each record + branches=$(echo $line | awk '{for(i=1;i<=NF;i++) if($i=="branches:") print $(i-1)}') + if [ $(($index%2)) -ne 0 ] && [ ${branches}x != ${prev_branches}x ] + then + echo "Leader sampling [Failed inconsistent branches count]" + err=1 + return + fi + index=$(($index+1)) + prev_branches=$branches + done < $script_output + echo "Basic leader sampling test [Success]" +} + # raise the limit of file descriptors to minimum if [[ $default_fd_limit -lt $min_fd_limit ]]; then ulimit -Sn $min_fd_limit @@ -239,6 +266,7 @@ test_system_wide test_workload test_branch_counter test_cgroup +test_leader_sampling # restore the default value ulimit -Sn $default_fd_limit |