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| author | James Clark <james.clark@linaro.org> | 2025-01-08 14:29:00 +0000 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2025-01-13 11:45:05 -0300 |
| commit | 05cd60e4d0716ecc1a8027ae782c25522292d6ef (patch) | |
| tree | 618d6fac8e003e69b8314c2b1f396fb170942a81 | |
| parent | 9c3164ea7e28a4a03c45868a089e98148bd51edf (diff) | |
perf tests arm_spe: Add test for discard mode
Add a test that checks that there were no AUX or AUXTRACE events
recorded when discard mode is used.
Reviewed-by: Yeoreum Yun <yeoreum.yun@arm.com>
Signed-off-by: James Clark <james.clark@linaro.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Graham Woodward <graham.woodward@arm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Veronika Molnarova <vmolnaro@redhat.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20250108142904.401139-6-james.clark@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rwxr-xr-x | tools/perf/tests/shell/test_arm_spe.sh | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tools/perf/tests/shell/test_arm_spe.sh b/tools/perf/tests/shell/test_arm_spe.sh index 3258368634f7..a69aab70dd8a 100755 --- a/tools/perf/tests/shell/test_arm_spe.sh +++ b/tools/perf/tests/shell/test_arm_spe.sh @@ -107,7 +107,37 @@ arm_spe_system_wide_test() { arm_spe_report "SPE system-wide testing" $err } +arm_spe_discard_test() { + echo "SPE discard mode" + + for f in /sys/bus/event_source/devices/arm_spe_*; do + if [ -e "$f/format/discard" ]; then + cpu=$(cut -c -1 "$f/cpumask") + break + fi + done + + if [ -z $cpu ]; then + arm_spe_report "SPE discard mode not present" 2 + return + fi + + # Test can use wildcard SPE instance and Perf will only open the event + # on instances that have that format flag. But make sure the target + # runs on an instance with discard mode otherwise we're not testing + # anything. + perf record -o ${perfdata} -e arm_spe/discard/ -N -B --no-bpf-event \ + -- taskset --cpu-list $cpu true + + if perf report -i ${perfdata} --stats | grep 'AUX events\|AUXTRACE events'; then + arm_spe_report "SPE discard mode found unexpected data" 1 + else + arm_spe_report "SPE discard mode" 0 + fi +} + arm_spe_snapshot_test arm_spe_system_wide_test +arm_spe_discard_test exit $glb_err |