perf test cs-etm: Speed up basic test

Like the name says, this should be the most basic test possible. Kernel
recording is slow and already has coverage on the systemwide test. Perf
report output also has coverage elsewhere. 'ls' also produces more trace
than 'true'.

We only want to test if the combination of recording options works at
all, so fix all of these things to make it as fast as possible.

Reviewed-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: James Clark <james.clark@linaro.org>
Cc: Amir Ayupov <aaupov@meta.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Mike Leach <mike.leach@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paschalis Mpeis <Paschalis.Mpeis@arm.com>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/tests/shell/test_arm_coresight.sh b/tools/perf/tests/shell/test_arm_coresight.sh
index da2f599393e2e2df7c2a3b51395b2d2f804b70e5..83295a8fe179f442773d7e0b14ef11f5fc08f433 100755 (executable)
--- a/tools/perf/tests/shell/test_arm_coresight.sh
+++ b/tools/perf/tests/shell/test_arm_coresight.sh
@@ -179,10 +179,9 @@ arm_cs_etm_snapshot_test() {
 
 arm_cs_etm_basic_test() {
        echo "Recording trace with '$*'"
-       perf record -o ${perfdata} "$@" -m,8M -- ls > /dev/null 2>&1
+       perf record -o ${perfdata} "$@" -- true > /dev/null 2>&1
 
-       perf_script_branch_samples ls &&
-       perf_report_instruction_samples ls
+       perf_script_branch_samples true
 
        err=$?
        arm_cs_report "CoreSight basic testing with '$*'" $err
@@ -246,12 +245,12 @@ arm_cs_etm_snapshot_test
 
 # Test all combinations of per-thread, system-wide and normal mode with
 # and without timestamps
-arm_cs_etm_basic_test -e cs_etm/timestamp=0/ --per-thread
-arm_cs_etm_basic_test -e cs_etm/timestamp=1/ --per-thread
-arm_cs_etm_basic_test -e cs_etm/timestamp=0/ -a
-arm_cs_etm_basic_test -e cs_etm/timestamp=1/ -a
-arm_cs_etm_basic_test -e cs_etm/timestamp=0/
-arm_cs_etm_basic_test -e cs_etm/timestamp=1/
+arm_cs_etm_basic_test -e cs_etm/timestamp=0/u --per-thread
+arm_cs_etm_basic_test -e cs_etm/timestamp=1/u --per-thread
+arm_cs_etm_basic_test -e cs_etm/timestamp=0/u -a
+arm_cs_etm_basic_test -e cs_etm/timestamp=1/u -a
+arm_cs_etm_basic_test -e cs_etm/timestamp=0/u
+arm_cs_etm_basic_test -e cs_etm/timestamp=1/u
 
 arm_cs_etm_sparse_cpus_test