diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-24 13:33:45 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-24 13:33:45 -0800 |
| commit | 35efc5a425e3db676b3d1ab9f23705a3977cfdcd (patch) | |
| tree | 5dd2f9211b17eaad73f09bdc80172bea7dbb0760 /tools/perf/util/parse-events.c | |
| parent | 0a191749ce19112f8f20675232b951dccd4ae00e (diff) | |
| parent | cfbf8d4857c26a8a307fb7cd258074c9dcd8c691 (diff) | |
Merge 3.14-rc4 into char-misc-next
We want these fixes here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/util/parse-events.c')
| -rw-r--r-- | tools/perf/util/parse-events.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index d248fca6d7ed..1e15df10a88c 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -1091,12 +1091,12 @@ int is_valid_tracepoint(const char *event_string) static bool is_event_supported(u8 type, unsigned config) { bool ret = true; + int open_return; struct perf_evsel *evsel; struct perf_event_attr attr = { .type = type, .config = config, .disabled = 1, - .exclude_kernel = 1, }; struct { struct thread_map map; @@ -1108,7 +1108,20 @@ static bool is_event_supported(u8 type, unsigned config) evsel = perf_evsel__new(&attr); if (evsel) { - ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0; + open_return = perf_evsel__open(evsel, NULL, &tmap.map); + ret = open_return >= 0; + + if (open_return == -EACCES) { + /* + * This happens if the paranoid value + * /proc/sys/kernel/perf_event_paranoid is set to 2 + * Re-run with exclude_kernel set; we don't do that + * by default as some ARM machines do not support it. + * + */ + evsel->attr.exclude_kernel = 1; + ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0; + } perf_evsel__delete(evsel); } |