From d325c402964e7c63db94e9138c530832269a1297 Mon Sep 17 00:00:00 2001 From: Miroslav Benes Date: Fri, 28 Dec 2018 14:38:47 +0100 Subject: [PATCH] ring-buffer: Remove unused function ring_buffer_page_len() Commit 6b7e633fe9c2 ("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: Miroslav Benes Signed-off-by: Steven Rostedt (VMware) --- include/linux/ring_buffer.h | 2 -- kernel/trace/ring_buffer.c | 14 -------------- 2 files changed, 16 deletions(-) diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h index 5b9ae62272bb..f1429675f252 100644 --- a/include/linux/ring_buffer.h +++ b/include/linux/ring_buffer.h @@ -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); diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index 06e864a334bb..9a91479bbbfe 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -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.