trace: Add ring buffer stats to measure rate of events

[mirror_ubuntu-artful-kernel.git] / include / linux / ring_buffer.h

diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h
index b891de96000f35e3eaad5ecd7a6b5128fa6c65ff..67be0376d8e35e0593945dd9df507ed8528d02ce 100644 (file)
--- a/include/linux/ring_buffer.h
+++ b/include/linux/ring_buffer.h
@@ -154,6 +154,8 @@ void ring_buffer_record_enable(struct ring_buffer *buffer);
 void ring_buffer_record_disable_cpu(struct ring_buffer *buffer, int cpu);
 void ring_buffer_record_enable_cpu(struct ring_buffer *buffer, int cpu);
 
+unsigned long ring_buffer_oldest_event_ts(struct ring_buffer *buffer, int cpu);
+unsigned long ring_buffer_bytes_cpu(struct ring_buffer *buffer, int cpu);
 unsigned long ring_buffer_entries(struct ring_buffer *buffer);
 unsigned long ring_buffer_overruns(struct ring_buffer *buffer);
 unsigned long ring_buffer_entries_cpu(struct ring_buffer *buffer, int cpu);