Commit 58f7e4d7 authored by Jianhui Zhou's avatar Jianhui Zhou Committed by Steven Rostedt (Google)
Browse files

ring-buffer: Remove unused function ring_buffer_nr_pages() 



Because ring_buffer_nr_pages() is not an inline function and user accesses
buffer->buffers[cpu]->nr_pages directly, the function ring_buffer_nr_pages
is removed.

Signed-off-by: default avatarJianhui Zhou <912460177@qq.com>
Link: https://lore.kernel.org/tencent_F4A7E9AB337F44E0F4B858D07D19EF460708@qq.com


Signed-off-by: default avatarSteven Rostedt (Google) <rostedt@goodmis.org>
parent bcf86c01

include/linux/ring_buffer.h

+0 −1
Original line number Diff line number Diff line
@@ -193,7 +193,6 @@ void ring_buffer_set_clock(struct trace_buffer *buffer, 
void ring_buffer_set_time_stamp_abs(struct trace_buffer *buffer, bool abs);

bool ring_buffer_time_stamp_abs(struct trace_buffer *buffer);



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

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



struct buffer_data_read_page;

kernel/trace/ring_buffer.c

+0 −12
Original line number Diff line number Diff line
@@ -692,18 +692,6 @@ u64 ring_buffer_event_time_stamp(struct trace_buffer *buffer, 
	return ts;

}



/**

 * ring_buffer_nr_pages - get the number of buffer pages in the ring buffer

 * @buffer: The ring_buffer to get the number of pages from

 * @cpu: The cpu of the ring_buffer to get the number of pages from

 *

 * Returns the number of pages used by a per_cpu buffer of the ring buffer.

 */

size_t ring_buffer_nr_pages(struct trace_buffer *buffer, int cpu)

{

	return buffer->buffers[cpu]->nr_pages;

}



/**

 * ring_buffer_nr_dirty_pages - get the number of used pages in the ring buffer

 * @buffer: The ring_buffer to get the number of pages from