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perf test: Use cycles event in perf record test for leader_sampling

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On s390 the event instructions can not be used for recording.
This event is only supported by perf stat.

Change the event from instructions to cycles in subtest
test_leader_sampling.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Suggested-by: James Clark <james.clark@linaro.org>
Reviewed-by: James Clark <james.clark@linaro.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Link: https://lore.kernel.org/r/20250131102756.4185235-3-tmricht@linux.ibm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Thomas Richter
2025-01-31 11:27:56 +01:00
committed by Namhyung Kim
parent 859199431d
commit 90d97674d4
1 changed files with 5 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
tools/perf/tests/shell/record.sh
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@@ -231,7 +231,7 @@ test_cgroup() {
test_leader_sampling() {
echo "Basic leader sampling test"
if ! perf record -o "${perfdata}" -e "{instructions,instructions}:Su" -- \
if ! perf record -o "${perfdata}" -e "{cycles,cycles}:Su" -- \
perf test -w brstack 2> /dev/null
then
echo "Leader sampling [Failed record]"
@@ -243,15 +243,15 @@ test_leader_sampling() {
while IFS= read -r line
do
# Check if the two instruction counts are equal in each record
instructions=$(echo $line | awk '{for(i=1;i<=NF;i++) if($i=="instructions:") print $(i-1)}')
if [ $(($index%2)) -ne 0 ] && [ ${instructions}x != ${prev_instructions}x ]
cycles=$(echo $line | awk '{for(i=1;i<=NF;i++) if($i=="cycles:") print $(i-1)}')
if [ $(($index%2)) -ne 0 ] && [ ${cycles}x != ${prev_cycles}x ]
then
echo "Leader sampling [Failed inconsistent instructions count]"
echo "Leader sampling [Failed inconsistent cycles count]"
err=1
return
fi
index=$(($index+1))
prev_instructions=$instructions
prev_cycles=$cycles
done < $script_output
echo "Basic leader sampling test [Success]"
}