diff options
| author | David Ahern <[email protected]> | 2012-07-29 20:53:03 -0600 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <[email protected]> | 2012-08-03 10:30:18 -0300 |
| commit | 1a31fc904f1c897e4aaf7c3176e6aafa49f5d395 (patch) | |
| tree | 10b7ae8bb5af31a4be085d6e1c91e6f0d7875dc8 | |
| parent | 7405ed10f6adcdd556d59c360b5b216fccada3d9 (diff) | |
perf top: Error handling for counter creation should parallel perf-record
5a7ed29 fixed up perf-record but not perf-top. Similar argument holds
for it -- fallback to PMU only if it does not exist and handle invalid
attributes separately.
Signed-off-by: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Robert Richter <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
| -rw-r--r-- | tools/perf/builtin-top.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 40264eaa9f0f..34096275a7b5 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -943,8 +943,10 @@ try_again: * based cpu-clock-tick sw counter, which * is always available even if no PMU support: */ - if (attr->type == PERF_TYPE_HARDWARE && - attr->config == PERF_COUNT_HW_CPU_CYCLES) { + if ((err == ENOENT || err == ENXIO) && + (attr->type == PERF_TYPE_HARDWARE) && + (attr->config == PERF_COUNT_HW_CPU_CYCLES)) { + if (verbose) ui__warning("Cycles event not supported,\n" "trying to fall back to cpu-clock-ticks\n"); |