tracing/filters: move preds into event_filter object
Create a new event_filter object, and move the pred-related members
out of the call and subsystem objects and into the filter object - the
details of the filter implementation don't need to be exposed in the
call and subsystem in any case, and it will also help make the new
parser implementation a little cleaner.
[ Impact: refactor trace-filter code to prepare for new features ]
Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: fweisbec@gmail.com
Cc: Li Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <1240905887.6416.119.camel@tropicana>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 7d55bcf..1fb7d6c 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -731,12 +731,16 @@
int size;
};
+struct event_filter {
+ int n_preds;
+ struct filter_pred **preds;
+};
+
struct event_subsystem {
struct list_head list;
const char *name;
struct dentry *entry;
- int n_preds;
- struct filter_pred **preds;
+ void *filter;
};
struct filter_pred;
@@ -774,7 +778,7 @@
struct ring_buffer *buffer,
struct ring_buffer_event *event)
{
- if (unlikely(call->n_preds) && !filter_match_preds(call, rec)) {
+ if (unlikely(call->filter_active) && !filter_match_preds(call, rec)) {
ring_buffer_discard_commit(buffer, event);
return 1;
}