diff options
| author | Jiri Olsa <jolsa@redhat.com> | 2012-10-10 14:53:16 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-10-24 10:41:26 +0200 |
| commit | 3fded963cdae12ff891a55efc866437506c3f912 (patch) | |
| tree | 98f0a41f70cc8131f42dc7692a3dea9cf407fdbf /tools/perf/util/pmu.c | |
| parent | 20550a434583c78f8ff9a2819639e2bacbe58574 (diff) | |
perf tools: Fix PMU object alias initialization
The pmu_lookup should return pmus that do not expose the 'events'
group attribute in sysfs. Also it should fail when any other error
during 'events' lookup is hit (pmu_aliases fails).
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1349873598-12583-7-git-send-email-jolsa@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/perf/util/pmu.c')
| -rw-r--r-- | tools/perf/util/pmu.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 8a2229da594..18e84801d4d 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -164,7 +164,7 @@ static int pmu_aliases(char *name, struct list_head *head) "%s/bus/event_source/devices/%s/events", sysfs, name); if (stat(path, &st) < 0) - return -1; + return 0; /* no error if 'events' does not exist */ if (pmu_aliases_parse(path, head)) return -1; @@ -296,6 +296,9 @@ static struct perf_pmu *pmu_lookup(char *name) if (pmu_format(name, &format)) return NULL; + if (pmu_aliases(name, &aliases)) + return NULL; + if (pmu_type(name, &type)) return NULL; @@ -305,8 +308,6 @@ static struct perf_pmu *pmu_lookup(char *name) pmu->cpus = pmu_cpumask(name); - pmu_aliases(name, &aliases); - INIT_LIST_HEAD(&pmu->format); INIT_LIST_HEAD(&pmu->aliases); list_splice(&format, &pmu->format); |