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| author | Adrian Hunter <adrian.hunter@intel.com> | 2022-10-14 20:09:00 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-10-15 16:13:16 +0300 |
| commit | 5021d82bca4f5335b29de71f0533b93c6c15007e (patch) | |
| tree | 5257bcc5a14dd029911f21b8747f44ac4b83c82d | |
| parent | e4080492877d3125ffd0c6dd3e3c997fbe0ebe6d (diff) | |
| download | linux-5021d82bca4f5335b29de71f0533b93c6c15007e.tar.xz | |
perf test: test_intel_pt.sh: Tidy some perf record options
When not decoding, the options "-B -N --no-bpf-event" speed up perf record.
Make a common function for them.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20221014170905.64069-3-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rwxr-xr-x | tools/perf/tests/shell/test_intel_pt.sh | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/tools/perf/tests/shell/test_intel_pt.sh b/tools/perf/tests/shell/test_intel_pt.sh index 4609a24c9340..334836f92bdc 100755 --- a/tools/perf/tests/shell/test_intel_pt.sh +++ b/tools/perf/tests/shell/test_intel_pt.sh @@ -42,6 +42,14 @@ trap_cleanup() trap trap_cleanup EXIT TERM INT +# perf record for testing without decoding +perf_record_no_decode() +{ + # Options to speed up recording: no post-processing, no build-id cache update, + # and no BPF events. + perf record -B -N --no-bpf-event "$@" +} + have_workload=false cat << _end_of_file_ | /usr/bin/cc -o "${workload}" -xc - -pthread && have_workload=true #include <time.h> @@ -76,7 +84,7 @@ _end_of_file_ can_cpu_wide() { echo "Checking for CPU-wide recording on CPU $1" - if ! perf record -o "${tmpfile}" -B -N --no-bpf-event -e dummy:u -C "$1" true >/dev/null 2>&1 ; then + if ! perf_record_no_decode -o "${tmpfile}" -e dummy:u -C "$1" true >/dev/null 2>&1 ; then echo "No so skipping" return 2 fi @@ -93,7 +101,7 @@ test_system_wide_side_band() 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 + perf_record_no_decode -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 "${perfdatafile}" --no-itrace --show-mmap-events -C 1 2>/dev/null | grep -c MMAP) @@ -109,7 +117,7 @@ test_system_wide_side_band() can_kernel() { - perf record -o "${tmpfile}" -B -N --no-bpf-event -e dummy:k true >/dev/null 2>&1 || return 2 + perf_record_no_decode -o "${tmpfile}" -e dummy:k true >/dev/null 2>&1 || return 2 return 0 } @@ -235,7 +243,7 @@ test_per_thread() wait_for_threads ${w1} 2 wait_for_threads ${w2} 2 - perf record -B -N --no-bpf-event -o "${perfdatafile}" -e intel_pt//u"${k}" -vvv --per-thread -p "${w1},${w2}" 2>"${errfile}" >"${outfile}" & + perf_record_no_decode -o "${perfdatafile}" -e intel_pt//u"${k}" -vvv --per-thread -p "${w1},${w2}" 2>"${errfile}" >"${outfile}" & ppid=$! echo "perf PID is $ppid" wait_for_perf_to_start ${ppid} "${errfile}" || return 1 |