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.Signed-off-by: Miroslav Benes <[email protected]> --- I am sorry if you received the patch more than once (hopefully not). For some strange reasons git send-email segfaulted, I tried to send from a different machine and made a mistake. Holiday mode *sigh*. include/linux/ring_buffer.h | 3 --- kernel/trace/ring_buffer.c | 14 -------------- 2 files changed, 17 deletions(-) diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h index 0940fda59872..2351aa46dbc7 100644 --- a/include/linux/ring_buffer.h +++ b/include/linux/ring_buffer.h @@ -187,9 +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); - - void *ring_buffer_alloc_read_page(struct ring_buffer *buffer, int cpu); void ring_buffer_free_read_page(struct ring_buffer *buffer, int cpu, void *data); int ring_buffer_read_page(struct ring_buffer *buffer, void **data_page, diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index 4f3247a53259..ca1308eec4a4 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. -- 2.20.1
