commit 77d9f465d46fd67cdb82ee5e1ab99dd57a17c486
author Steven Rostedt <srostedt@redhat.com> Thu Apr 02 01:16:59 2009 -0400
committer Ingo Molnar <mingo@elte.hu> Tue Apr 14 00:00:54 2009 +0200
tree c21063ae5dff55522593f29e952c8a05958c6ce6
parent fa1b47dd85453ec7d4bcfe4aa4a2d172ba452fc3

tracing/filters: use ring_buffer_discard_commit for discarded events

The ring_buffer_discard_commit makes better usage of the ring_buffer
when an event has been discarded. It tries to remove it completely if
possible.

This patch converts the trace event filtering to use
ring_buffer_discard_commit instead of the ring_buffer_event_discard.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

kernel/trace/trace.c

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index c209d21..d880ab2 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -884,13 +884,18 @@
 void trace_current_buffer_unlock_commit(struct ring_buffer_event *event,
 					unsigned long flags, int pc)
 {
-	return __trace_buffer_unlock_commit(&global_trace, event, flags, pc, 1);
+	__trace_buffer_unlock_commit(&global_trace, event, flags, pc, 1);
 }
 
 void trace_nowake_buffer_unlock_commit(struct ring_buffer_event *event,
 					unsigned long flags, int pc)
 {
-	return __trace_buffer_unlock_commit(&global_trace, event, flags, pc, 0);
+	__trace_buffer_unlock_commit(&global_trace, event, flags, pc, 0);
+}
+
+void trace_current_buffer_discard_commit(struct ring_buffer_event *event)
+{
+	ring_buffer_discard_commit(global_trace.buffer, event);
 }
 
 void