Commit-ID: 1863fbbb781b1129da0cfdad46ef875370a34117 Gitweb: http://git.kernel.org/tip/1863fbbb781b1129da0cfdad46ef875370a34117 Author: Stephane Eranian <eran...@google.com> AuthorDate: Thu, 20 Sep 2012 18:19:45 +0200 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitDate: Thu, 20 Sep 2012 14:44:17 -0300
perf record: Print event causing perf_event_open() to fail Got tired of not getting the event that caused the perf_event_open() syscall to fail. So I fixed the error message. This is very useful when monitoring lots of events in a single run. Signed-off-by: Stephane Eranian <eran...@google.com> Cc: David Ahern <dsah...@gmail.com> Cc: Ingo Molnar <mi...@elte.hu> Cc: Peter Zijlstra <pet...@infradead.org> Link: http://lkml.kernel.org/r/20120920161945.GA7064@quad Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/builtin-record.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-) diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index c643ed6..2cb7434 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -297,8 +297,10 @@ try_again: } printf("\n"); - error("sys_perf_event_open() syscall returned with %d (%s). /bin/dmesg may provide additional information.\n", - err, strerror(err)); + error("sys_perf_event_open() syscall returned with %d " + "(%s) for event %s. /bin/dmesg may provide " + "additional information.\n", + err, strerror(err), perf_evsel__name(pos)); #if defined(__i386__) || defined(__x86_64__) if (attr->type == PERF_TYPE_HARDWARE && -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
