diff options
| author | David Ahern <[email protected]> | 2012-05-08 09:29:16 -0600 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <[email protected]> | 2012-05-09 11:58:48 -0300 |
| commit | 979987a567d9e666fe719f337409b2fbb6418f5f (patch) | |
| tree | d8509a657aed3011c8f5f27d4b70f1ed63420b43 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | 028d455b12719a48b1c4b51ce07a074135726f8f (diff) | |
perf stat: handle ENXIO error for perf_event_open
perf stat on PPC currently fails to run:
$ perf stat -- sleep 1
Error: open_counter returned with 6 (No such device or address). /bin/dmesg may provide additional information.
Fatal: Not all events could be opened.
The problem is that until 2.6.37 (behavior changed with commit b0a873e)
perf on PPC returns ENXIO when hw_perf_event_init() fails. With this
patch we get the expected behavior:
$ perf stat -v -- sleep 1
cycles event is not supported by the kernel.
stalled-cycles-frontend event is not supported by the kernel.
stalled-cycles-backend event is not supported by the kernel.
instructions event is not supported by the kernel.
branches event is not supported by the kernel.
branch-misses event is not supported by the kernel.
...
Signed-off-by: David Ahern <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions