Commit d325c402 authored by Miroslav Benes's avatar Miroslav Benes Committed by Steven Rostedt (VMware)
Browse files

ring-buffer: Remove unused function ring_buffer_page_len() 

Commit 6b7e633f ("tracing: Remove extra zeroing out of the ring
buffer page") removed the only caller of ring_buffer_page_len(). The
function is now unused and may be removed.

Link: http://lkml.kernel.org/r/20181228133847.106177-1-mbenes@suse.cz



Signed-off-by: default avatarMiroslav Benes <mbenes@suse.cz>
Signed-off-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
parent f52d569f

include/linux/ring_buffer.h

+0 −2
Original line number Diff line number Diff line
@@ -187,8 +187,6 @@ void ring_buffer_set_clock(struct ring_buffer *buffer, 
void ring_buffer_set_time_stamp_abs(struct ring_buffer *buffer, bool abs);

bool ring_buffer_time_stamp_abs(struct ring_buffer *buffer);



size_t ring_buffer_page_len(void *page);



size_t ring_buffer_nr_pages(struct ring_buffer *buffer, int cpu);

size_t ring_buffer_nr_dirty_pages(struct ring_buffer *buffer, int cpu);

kernel/trace/ring_buffer.c

+0 −14
Original line number Diff line number Diff line
@@ -353,20 +353,6 @@ static void rb_init_page(struct buffer_data_page *bpage) 
	local_set(&bpage->commit, 0);

}



/**

 * ring_buffer_page_len - the size of data on the page.

 * @page: The page to read

 *

 * Returns the amount of data on the page, including buffer page header.

 */

size_t ring_buffer_page_len(void *page)

{

	struct buffer_data_page *bpage = page;



	return (local_read(&bpage->commit) & ~RB_MISSED_FLAGS)

		+ BUF_PAGE_HDR_SIZE;

}



/*

 * Also stolen from mm/slob.c. Thanks to Mathieu Desnoyers for pointing

 * this issue out.

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