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Commit d611851b authored by zhangwei(Jovi)'s avatar zhangwei(Jovi) Committed by Steven Rostedt
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tracing: Typo fix on ring buffer comments 

There have some mismatch between comments with
real function name, update it.

This patch also add some missed function arguments
description.

Link: http://lkml.kernel.org/r/51E3B3B2.4080307@huawei.com



Signed-off-by: default avatarzhangwei(Jovi) <jovi.zhangwei@huawei.com>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent 146c3442

kernel/trace/ring_buffer.c

+9 −7
Original line number Diff line number Diff line
@@ -1066,7 +1066,7 @@ static int rb_check_list(struct ring_buffer_per_cpu *cpu_buffer, 
}



/**

 * check_pages - integrity check of buffer pages

 * rb_check_pages - integrity check of buffer pages

 * @cpu_buffer: CPU buffer with pages to test

 *

 * As a safety measure we check to make sure the data pages have not
@@ -1258,7 +1258,7 @@ static int rb_cpu_notify(struct notifier_block *self, 
#endif



/**

 * ring_buffer_alloc - allocate a new ring_buffer

 * __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.

 *
@@ -1607,6 +1607,7 @@ static void update_pages_handler(struct work_struct *work) 
 * ring_buffer_resize - resize the ring buffer

 * @buffer: the buffer to resize.

 * @size: the new size.

 * @cpu_id: the cpu buffer to resize

 *

 * Minimum size is 2 * BUF_PAGE_SIZE.

 *
@@ -3956,11 +3957,11 @@ EXPORT_SYMBOL_GPL(ring_buffer_consume); 
 * expected.

 *

 * After a sequence of ring_buffer_read_prepare calls, the user is

 * expected to make at least one call to ring_buffer_prepare_sync.

 * expected to make at least one call to ring_buffer_read_prepare_sync.

 * Afterwards, ring_buffer_read_start is invoked to get things going

 * for real.

 *

 * This overall must be paired with ring_buffer_finish.

 * This overall must be paired with ring_buffer_read_finish.

 */

struct ring_buffer_iter *

ring_buffer_read_prepare(struct ring_buffer *buffer, int cpu)
@@ -4009,7 +4010,7 @@ EXPORT_SYMBOL_GPL(ring_buffer_read_prepare_sync); 
 * an intervening ring_buffer_read_prepare_sync must have been

 * performed.

 *

 * Must be paired with ring_buffer_finish.

 * Must be paired with ring_buffer_read_finish.

 */

void

ring_buffer_read_start(struct ring_buffer_iter *iter)
@@ -4031,7 +4032,7 @@ ring_buffer_read_start(struct ring_buffer_iter *iter) 
EXPORT_SYMBOL_GPL(ring_buffer_read_start);



/**

 * ring_buffer_finish - finish reading the iterator of the buffer

 * ring_buffer_read_finish - finish reading the iterator of the buffer

 * @iter: The iterator retrieved by ring_buffer_start

 *

 * This re-enables the recording to the buffer, and frees the
@@ -4346,6 +4347,7 @@ EXPORT_SYMBOL_GPL(ring_buffer_swap_cpu); 
/**

 * ring_buffer_alloc_read_page - allocate a page to read from buffer

 * @buffer: the buffer to allocate for.

 * @cpu: the cpu buffer to allocate.

 *

 * This function is used in conjunction with ring_buffer_read_page.

 * When reading a full page from the ring buffer, these functions
@@ -4403,7 +4405,7 @@ EXPORT_SYMBOL_GPL(ring_buffer_free_read_page); 
 * to swap with a page in the ring buffer.

 *

 * for example:

 *	rpage = ring_buffer_alloc_read_page(buffer);

 *	rpage = ring_buffer_alloc_read_page(buffer, cpu);

 *	if (!rpage)

 *		return error;

 *	ret = ring_buffer_read_page(buffer, &rpage, len, cpu, 0);