Messages in this thread Patch in this message | | | From | Tom Zanussi <> | Subject | [PATCH v10 06/26] tracing: Add a per-event-trigger 'paused' field | Date | Wed, 30 Sep 2015 14:09:52 -0500 |
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Add a simple per-trigger 'paused' flag, allowing individual triggers to pause. We could leave it to individual triggers that need this functionality to do it themselves, but we also want to allow other events to control pausing, so add it to the trigger data.
Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com> --- kernel/trace/trace.h | 1 + kernel/trace/trace_events_trigger.c | 4 ++++ 2 files changed, 5 insertions(+)
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 783f620..71cf384 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -1111,6 +1111,7 @@ struct event_trigger_data { struct event_filter __rcu *filter; char *filter_str; void *private_data; + bool paused; struct list_head list; }; diff --git a/kernel/trace/trace_events_trigger.c b/kernel/trace/trace_events_trigger.c index c3abef6..8375d29 100644 --- a/kernel/trace/trace_events_trigger.c +++ b/kernel/trace/trace_events_trigger.c @@ -72,6 +72,8 @@ event_triggers_call(struct trace_event_file *file, void *rec) return tt; list_for_each_entry_rcu(data, &file->triggers, list) { + if (data->paused) + continue; if (!rec) { data->ops->func(data, rec); continue; @@ -110,6 +112,8 @@ event_triggers_post_call(struct trace_event_file *file, struct event_trigger_data *data; list_for_each_entry_rcu(data, &file->triggers, list) { + if (data->paused) + continue; if (data->cmd_ops->trigger_type & tt) data->ops->func(data, rec); } -- 1.9.3
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