diff options
| author | Adrian Hunter | 2022-05-24 10:54:22 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo | 2022-05-26 12:36:56 -0300 |
| commit | 1097b38fb7583789ac5e33f3fefb1404bd087f99 (patch) | |
| tree | c45b2998543cb0c826e6cfd419bef6e7ea5069c7 /tools/perf | |
| parent | df76e0038370d364d4b2154fa7ddbbccc29f629f (diff) | |
perf intel-pt: Add a test for system-wide side band
Add a test for system-wide side band even when tracing selected CPUs.
The test fails before the patches up to "perf tools: Allow system-wide
events to keep their own CPUs" are applied, passes afterwards.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Ian Rogers <irogers@google.com>
Acked-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Leo Yan <leo.yan@linaro.org>
Link: https://lore.kernel.org/r/20220524075436.29144-2-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rwxr-xr-x | tools/perf/tests/shell/test_intel_pt.sh | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/tools/perf/tests/shell/test_intel_pt.sh b/tools/perf/tests/shell/test_intel_pt.sh new file mode 100755 index 000000000000..a3298643884d --- /dev/null +++ b/tools/perf/tests/shell/test_intel_pt.sh @@ -0,0 +1,71 @@ +#!/bin/sh +# Miscellaneous Intel PT testing +# SPDX-License-Identifier: GPL-2.0 + +set -e + +# Skip if no Intel PT +perf list | grep -q 'intel_pt//' || exit 2 + +skip_cnt=0 +ok_cnt=0 +err_cnt=0 + +tmpfile=`mktemp` +perfdatafile=`mktemp` + +can_cpu_wide() +{ + perf record -o ${tmpfile} -B -N --no-bpf-event -e dummy:u -C $1 true 2>&1 >/dev/null || return 2 + return 0 +} + +test_system_wide_side_band() +{ + # Need CPU 0 and CPU 1 + can_cpu_wide 0 || return $? + can_cpu_wide 1 || return $? + + # Record on CPU 0 a task running on CPU 1 + perf record -B -N --no-bpf-event -o ${perfdatafile} -e intel_pt//u -C 0 -- taskset --cpu-list 1 uname + + # Should get MMAP events from CPU 1 because they can be needed to decode + mmap_cnt=`perf script -i ${perfdatafile} --no-itrace --show-mmap-events -C 1 2>/dev/null | grep MMAP | wc -l` + + if [ ${mmap_cnt} -gt 0 ] ; then + return 0 + fi + + echo "Failed to record MMAP events on CPU 1 when tracing CPU 0" + return 1 +} + +count_result() +{ + if [ $1 -eq 2 ] ; then + skip_cnt=`expr ${skip_cnt} \+ 1` + return + fi + if [ $1 -eq 0 ] ; then + ok_cnt=`expr ${ok_cnt} \+ 1` + return + fi + err_cnt=`expr ${err_cnt} \+ 1` +} + +test_system_wide_side_band + +count_result $? + +rm -f ${tmpfile} +rm -f ${perfdatafile} + +if [ ${err_cnt} -gt 0 ] ; then + exit 1 +fi + +if [ ${ok_cnt} -gt 0 ] ; then + exit 0 +fi + +exit 2 |