ring_buffer: fix comments

Impact: comments cleanup

fix incorrect comments for enum ring_buffer_type

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h
index 1a350a8..d363467 100644 (file)
--- a/include/linux/ring_buffer.h
+++ b/include/linux/ring_buffer.h
@@ -28,17 +28,19 @@ struct ring_buffer_event {
  *                              size = 8 bytes
  *
  * @RINGBUF_TYPE_TIME_STAMP:   Sync time stamp with external clock
- *                              array[0] = tv_nsec
- *                              array[1] = tv_sec
+ *                              array[0]    = tv_nsec
+ *                              array[1..2] = tv_sec
  *                              size = 16 bytes
  *
  * @RINGBUF_TYPE_DATA:         Data record
  *                              If len is zero:
  *                               array[0] holds the actual length
- *                               array[1..(length+3)/4-1] holds data
+ *                               array[1..(length+3)/4] holds data
+ *                               size = 4 + 4 + length (bytes)
  *                              else
  *                               length = len << 2
- *                               array[0..(length+3)/4] holds data
+ *                               array[0..(length+3)/4-1] holds data
+ *                               size = 4 + length (bytes)
  */
 enum ring_buffer_type {
        RINGBUF_TYPE_PADDING,