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authorSteven Rostedt (Red Hat) <rostedt@goodmis.org>2013-01-30 02:45:49 +0400
committerSteven Rostedt <rostedt@goodmis.org>2013-01-30 20:01:53 +0400
commitad964704ba9326d027fc10fd0099b7c880e50172 (patch)
treee08884c0f383e5b954233c323df67a3d726b6537 /include/linux/ring_buffer.h
parent03274a3ffb449632970fdd35da72ea41cf8474da (diff)
downloadlinux-ad964704ba9326d027fc10fd0099b7c880e50172.tar.xz
ring-buffer: Add stats field for amount read from trace ring buffer
Add a stat about the number of events read from the ring buffer: # cat /debug/tracing/per_cpu/cpu0/stats entries: 39869 overrun: 870512 commit overrun: 0 bytes: 1449912 oldest event ts: 6561.368690 now ts: 6565.246426 dropped events: 0 read events: 112 <-- Added Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'include/linux/ring_buffer.h')
-rw-r--r--include/linux/ring_buffer.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h
index 519777e3fa01..1342e69542f3 100644
--- a/include/linux/ring_buffer.h
+++ b/include/linux/ring_buffer.h
@@ -167,6 +167,7 @@ unsigned long ring_buffer_entries_cpu(struct ring_buffer *buffer, int cpu);
unsigned long ring_buffer_overrun_cpu(struct ring_buffer *buffer, int cpu);
unsigned long ring_buffer_commit_overrun_cpu(struct ring_buffer *buffer, int cpu);
unsigned long ring_buffer_dropped_events_cpu(struct ring_buffer *buffer, int cpu);
+unsigned long ring_buffer_read_events_cpu(struct ring_buffer *buffer, int cpu);
u64 ring_buffer_time_stamp(struct ring_buffer *buffer, int cpu);
void ring_buffer_normalize_time_stamp(struct ring_buffer *buffer,