Messages in this thread Patch in this message | | | Date | Thu, 26 Feb 2015 03:31:48 -0800 | From | tip-bot for Arnaldo Carvalho de Melo <> | Subject | [tip:perf/core] perf trace: Filter out the trace pid when no threads are specified |
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Commit-ID: 241b057ce5c01a24c280f124fab60109cb562589 Gitweb: http://git.kernel.org/tip/241b057ce5c01a24c280f124fab60109cb562589 Author: Arnaldo Carvalho de Melo <acme@redhat.com> AuthorDate: Sat, 21 Feb 2015 10:15:21 -0800 Committer: Arnaldo Carvalho de Melo <acme@redhat.com> CommitDate: Sun, 22 Feb 2015 22:14:48 -0300
perf trace: Filter out the trace pid when no threads are specified
To avoid tracing the tracer.
Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-shmwd1khzpaobr3i0j1ygapg@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> --- tools/perf/builtin-trace.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 3a696aa..cb33e4c 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -2151,6 +2151,15 @@ static int trace__run(struct trace *trace, int argc, const char **argv) if (err < 0) goto out_error_open; + /* + * Better not use !target__has_task() here because we need to cover the + * case where no threads were specified in the command line, but a + * workload was, and in that case we will fill in the thread_map when + * we fork the workload in perf_evlist__prepare_workload. + */ + if (evlist->threads->map[0] == -1) + perf_evlist__set_filter_pid(evlist, getpid()); + err = perf_evlist__mmap(evlist, trace->opts.mmap_pages, false); if (err < 0) goto out_error_mmap;
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