Also fixes some typo.
Cc: Steven Rostedt <[email protected]>
Cc: Andrew Morton <[email protected]>
Signed-off-by: Fabian Frederick <[email protected]>
---
kernel/trace/ring_buffer.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index c634868..7c778e7 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -1261,6 +1261,7 @@ static int rb_cpu_notify(struct notifier_block *self,
* __ring_buffer_alloc - allocate a new ring_buffer
* @size: the size in bytes per cpu that is needed.
* @flags: attributes to set for the ring buffer.
+ * @key: ring buffer reader_lock_key.
*
* Currently the only flag that is available is the RB_FL_OVERWRITE
* flag. This flag means that the buffer will overwrite old data
@@ -1985,9 +1986,11 @@ rb_add_time_stamp(struct ring_buffer_event *event, u64
delta)
/**
* rb_update_event - update event type and data
- * @event: the even to update
- * @type: the type of event
+ * @cpu_buffer: ring buffer for one cpu
+ * @event: the event to update
* @length: the size of the event field in the ring buffer
+ * @add_timestamp: bool to indicate whether to call rb_add_time_stamp
+ * @delta: event delta time
*
* Update the type and data fields of the event. The length
* is the actual size that is written to the ring buffer,
@@ -2005,7 +2008,7 @@ rb_update_event(struct ring_buffer_per_cpu *cpu_buffer,
/*
* If we need to add a timestamp, then we
- * add it to the start of the resevered space.
+ * add it to the start of the reserved space.
*/
if (unlikely(add_timestamp)) {
event = rb_add_time_stamp(event, delta);
@@ -4104,6 +4107,7 @@ EXPORT_SYMBOL_GPL(ring_buffer_read);
/**
* ring_buffer_size - return the size of the ring buffer (in bytes)
* @buffer: The ring buffer.
+ * @cpu: The CPU to get ring buffer size from.
*/
unsigned long ring_buffer_size(struct ring_buffer *buffer, int cpu)
{
@@ -4281,6 +4285,7 @@ EXPORT_SYMBOL_GPL(ring_buffer_empty_cpu);
* ring_buffer_swap_cpu - swap a CPU buffer between two ring buffers
* @buffer_a: One buffer to swap with
* @buffer_b: The other buffer to swap with
+ * @cpu: the CPU of the buffers to swap
*
* This function is useful for tracers that want to take a "snapshot"
* of a CPU buffer and has another back up buffer lying around.
--
1.8.4.5
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
