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| author | Ingo Molnar <mingo@elte.hu> | 2011-08-05 10:32:54 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-08-05 10:33:55 +0200 |
| commit | 3272cab4063467410802367a8d69f06c65b2a866 (patch) | |
| tree | 1c665f8572b0aab2a5343d32b5eaa6713669b04f /kernel/trace/trace_events_filter.c | |
| parent | f629299b544b6cc12b4e3e85fec96f4ce5809482 (diff) | |
| parent | 140d0b2108faebc77c6523296e211e509cb9f5f9 (diff) | |
Merge branch 'linus' into perf/urgent
Merge reason: Include most of the merge window trees, to do fixes on top.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/trace_events_filter.c')
| -rw-r--r-- | kernel/trace/trace_events_filter.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index 8008ddcfbf20..256764ecccd6 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -1886,6 +1886,12 @@ int apply_subsystem_event_filter(struct event_subsystem *system, mutex_lock(&event_mutex); + /* Make sure the system still has events */ + if (!system->nr_events) { + err = -ENODEV; + goto out_unlock; + } + if (!strcmp(strstrip(filter_string), "0")) { filter_free_subsystem_preds(system); remove_filter_string(system->filter); |