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perf record: Add --sample-cpu option

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Adding --sample-cpu option to be able to explicitly enable CPU sample
type. Currently it's only enable implicitly in case the target is cpu
related.

It will be useful for following c2c record tool.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1470074555-24889-8-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2016-08-01 20:02:35 +02:00 committed by Arnaldo Carvalho de Melo
parent 52c5cc363f
commit b6f35ed774
4 changed files with 6 additions and 1 deletions
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3
tools/perf/Documentation/perf-record.txt
View File

@ -192,6 +192,9 @@ OPTIONS
--period::
Record the sample period.
--sample-cpu::
Record the sample cpu.
-n::
--no-samples::
Don't sample.

1
tools/perf/builtin-record.c
View File

@ -1434,6 +1434,7 @@ struct option __record_options[] = {
OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat,
"per thread counts"),
OPT_BOOLEAN('d', "data", &record.opts.sample_address, "Record the sample addresses"),
OPT_BOOLEAN(0, "sample-cpu", &record.opts.sample_cpu, "Record the sample cpu"),
OPT_BOOLEAN_SET('T', "timestamp", &record.opts.sample_time,
&record.opts.sample_time_set,
"Record the sample timestamps"),

1
tools/perf/perf.h
View File

@ -52,6 +52,7 @@ struct record_opts {
bool sample_weight;
bool sample_time;
bool sample_time_set;
bool sample_cpu;
bool period;
bool running_time;
bool full_auxtrace;

2
tools/perf/util/evsel.c
View File

@ -882,7 +882,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts,
perf_evsel__set_sample_bit(evsel, REGS_INTR);
}
if (target__has_cpu(&opts->target))
if (target__has_cpu(&opts->target) || opts->sample_cpu)
perf_evsel__set_sample_bit(evsel, CPU);
if (opts->period)