diff options
| author |   Andi Kleen <ak@linux.intel.com> | 2018-09-20 11:05:37 -0700 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-10-24 15:29:54 -0300 |
| commit | 4eb068157121939f4bc16256a37bcd88f5554123 (patch) | |
| tree | c7966a41ba53841c225d831d8cdd6deb4a3a2dff /tools/perf/util/cs-etm.c | |
| parent | perf script: Add --insn-trace for instruction decoding (diff) | |
| download | linux-dev-4eb068157121939f4bc16256a37bcd88f5554123.tar.xz linux-dev-4eb068157121939f4bc16256a37bcd88f5554123.zip | |
perf script: Make itrace script default to all calls
By default 'perf script' for itrace outputs sampled instructions or
branches. In my experience this is confusing to users because it's hard
to correlate with real program behavior. The sampling makes sense for
tools like 'perf report' that actually sample to reduce the run time,
but run time is normally not a problem for 'perf script'. It's better
to give an accurate representation of the program flow.
Default 'perf script' to output all calls for itrace. That's a much saner
default. The old behavior can be still requested with 'perf script'
--itrace=ibxwpe100000
v2: Fix ETM build failure
v3: Really fix ETM build failure (Kim Phillips)
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Kim Phillips <kim.phillips@arm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Link: http://lkml.kernel.org/r/20180920180540.14039-3-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/cs-etm.c')
| -rw-r--r-- | tools/perf/util/cs-etm.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c index 2ae640257fdb..3b37d66dc533 100644 --- a/tools/perf/util/cs-etm.c +++ b/tools/perf/util/cs-etm.c @@ -1432,7 +1432,8 @@ int cs_etm__process_auxtrace_info(union perf_event *event, if (session->itrace_synth_opts && session->itrace_synth_opts->set) { etm->synth_opts = *session->itrace_synth_opts; } else { - itrace_synth_opts__set_default(&etm->synth_opts); + itrace_synth_opts__set_default(&etm->synth_opts, + session->itrace_synth_opts->default_no_sample); etm->synth_opts.callchain = false; } |