[PATCH 5/5] perf record: Force ignore_missing_thread for uid option
From: Jiri Olsa
Date: Mon Dec 12 2016 - 05:36:24 EST
Enable perf_evsel::ignore_missing_thread for -u option
to ignore complete failure if any of the user's processes
die between its enumeration and time we open the event.
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-vjykwntox3u5tlqctjk280ko@xxxxxxxxxxxxxx
---
tools/perf/builtin-record.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index fa26865364b6..74d6a035133a 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -1687,6 +1687,9 @@ int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused)
goto out;
}
+ /* Enable ignoring missing threads when -u option is defined. */
+ rec->opts.ignore_missing_thread = rec->opts.target.uid != UINT_MAX;
+
err = -ENOMEM;
if (perf_evlist__create_maps(rec->evlist, &rec->opts.target) < 0)
usage_with_options(record_usage, record_options);
--
2.7.4