[PATCH 9/9] perf test: Add new test cases for the branch counter feature

kan.liang
2024-07-03T20:03:30Z

From: Kan Liang <kan.liang@linux.intel.com>

Enhance the test case for the branch counter feature.

Now, the test verifies
- The new filter can be successfully applied on the supported platforms.
- The counter value can be outputted via the perf report -D
- The counter value and the abbr name can be outputted via the
perf script (New)

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
---
tools/perf/tests/shell/record.sh | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh
index 3d1a7759a7b2..7964ebd9007d 100755
--- a/tools/perf/tests/shell/record.sh
+++ b/tools/perf/tests/shell/record.sh
@@ -21,6 +21,7 @@ testprog="perf test -w thloop"
cpu_pmu_dir="/sys/bus/event_source/devices/cpu*"
br_cntr_file="/caps/branch_counter_nr"
br_cntr_output="branch stack counters"
+br_cntr_script_output="br_cntr: A"

cleanup() {
rm -rf "${perfdata}"
@@ -165,7 +166,7 @@ test_workload() {
}

test_branch_counter() {
- echo "Basic branch counter test"
+ echo "Branch counter test"
# Check if the branch counter feature is supported
for dir in $cpu_pmu_dir
do
@@ -175,19 +176,25 @@ test_branch_counter() {
return
fi
done
- if ! perf record -o "${perfdata}" -j any,counter ${testprog} 2> /dev/null
+ if ! perf record -o "${perfdata}" -e "{branches:p,instructions}" -j any,counter ${testprog} 2> /dev/null
then
- echo "Basic branch counter test [Failed record]"
+ echo "Branch counter record test [Failed record]"
err=1
return
fi
if ! perf report -i "${perfdata}" -D -q | grep -q "$br_cntr_output"
then
- echo "Basic branch record test [Failed missing output]"
+ echo "Branch counter report test [Failed missing output]"
err=1
return
fi
- echo "Basic branch counter test [Success]"
+ if ! perf script -i "${perfdata}" -F +brstackinsn,+brcntr | grep -q "$br_cntr_script_output"
+ then
+ echo " Branch counter script test [Failed missing output]"
+ err=1
+ return
+ fi
+ echo "Branch counter test [Success]"
}

test_per_thread
--
2.38.1