Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 6d102bc6 authored by Lai Jiangshan's avatar Lai Jiangshan Committed by Ingo Molnar
Browse files

tracing/ring-buffer: remove unused ring_buffer size 



Impact: remove dead code

struct ring_buffer.size is not set after ring_buffer is initialized
or resized. it is always 0.

we can use "buffer->pages * PAGE_SIZE" to get ring_buffer's size

Signed-off-by: default avatarLai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 40874491

kernel/trace/ring_buffer.c

+1 −3
Original line number Diff line number Diff line
@@ -258,7 +258,6 @@ struct ring_buffer_per_cpu { 
};



struct ring_buffer {

	unsigned long			size;

	unsigned			pages;

	unsigned			flags;

	int				cpus;
@@ -2210,8 +2209,7 @@ int ring_buffer_swap_cpu(struct ring_buffer *buffer_a, 
		return -EINVAL;



	/* At least make sure the two buffers are somewhat the same */

	if (buffer_a->size != buffer_b->size ||

	    buffer_a->pages != buffer_b->pages)

	if (buffer_a->pages != buffer_b->pages)

		return -EINVAL;



	cpu_buffer_a = buffer_a->buffers[cpu];