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authorNamhyung Kim <namhyung@kernel.org>2016-01-11 22:37:09 +0900
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-01-12 12:42:07 -0300
commit6156681b73f2fffe56493e9a50518c0cbfcd8ba3 (patch)
tree5bdbc06f4e1f6fb6361a80e7f195c9212f1c5162 /tools/perf/builtin-record.c
parent24b1e5d7f552eb6da430d5264d671ba45d634804 (diff)
downloadlinux-6156681b73f2fffe56493e9a50518c0cbfcd8ba3.tar.gz
perf record: Add --buildid-all option
The --buildid-all option is to record build-id of all DSOs in the file. It might be very costly to postprocess samples to find which DSO hits. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1452519429-31779-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-record.c')
-rw-r--r--tools/perf/builtin-record.c26
1 files changed, 20 insertions, 6 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index dc4e0adf5c5b..319712a4e02b 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -50,6 +50,7 @@ struct record {
int realtime_prio;
bool no_buildid;
bool no_buildid_cache;
+ bool buildid_all;
unsigned long long samples;
};
@@ -362,6 +363,13 @@ static int process_buildids(struct record *rec)
*/
symbol_conf.ignore_vmlinux_buildid = true;
+ /*
+ * If --buildid-all is given, it marks all DSO regardless of hits,
+ * so no need to process samples.
+ */
+ if (rec->buildid_all)
+ rec->tool.sample = NULL;
+
return perf_session__process_events(session);
}
@@ -756,12 +764,8 @@ out_child:
if (!rec->no_buildid) {
process_buildids(rec);
- /*
- * We take all buildids when the file contains
- * AUX area tracing data because we do not decode the
- * trace because it would take too long.
- */
- if (rec->opts.full_auxtrace)
+
+ if (rec->buildid_all)
dsos__hit_all(rec->session);
}
perf_session__write_header(rec->session, rec->evlist, fd, true);
@@ -1138,6 +1142,8 @@ struct option __record_options[] = {
"options passed to clang when compiling BPF scriptlets"),
OPT_STRING(0, "vmlinux", &symbol_conf.vmlinux_name,
"file", "vmlinux pathname"),
+ OPT_BOOLEAN(0, "buildid-all", &record.buildid_all,
+ "Record build-id of all DSOs regardless of hits"),
OPT_END()
};
@@ -1255,6 +1261,14 @@ int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused)
if (err)
goto out_symbol_exit;
+ /*
+ * We take all buildids when the file contains
+ * AUX area tracing data because we do not decode the
+ * trace because it would take too long.
+ */
+ if (rec->opts.full_auxtrace)
+ rec->buildid_all = true;
+
if (record_opts__config(&rec->opts)) {
err = -EINVAL;
goto out_symbol_exit;