Messages in this thread Patch in this message | | | From | Namhyung Kim <> | Subject | [PATCH 2/3] perf record: Add error message for EMFILE | Date | Mon, 9 Jan 2012 00:55:24 +0900 |
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When a user tries to open so many events, perf_event_oen syscall may fail with EMFILE. Provide an advice for that case.
Signed-off-by: Namhyung Kim <namhyung@gmail.com> --- tools/perf/builtin-record.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 0abfb18b911f..d47b8277ca78 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -248,6 +248,10 @@ try_again: ui__warning("The %s event is not supported.\n", event_name(pos)); exit(EXIT_FAILURE); + } else if (err == EMFILE) { + ui__warning("Too many events are opened.\n" + "Try again after reducing the number of events.\n"); + exit(EXIT_FAILURE); } printf("\n"); -- 1.7.8.2
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