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Commit da58834c authored by Yaowei Bai's avatar Yaowei Bai Committed by Steven Rostedt
Browse files

ring-buffer: rb_per_cpu_empty() can return boolean 

Makes rb_per_cpu_empty() return bool to improve readability.

No functional change.

Link: http://lkml.kernel.org/r/1443537816-5788-6-git-send-email-bywxiaobai@163.com



Signed-off-by: default avatarYaowei Bai <bywxiaobai@163.com>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent 3d4e204d

kernel/trace/ring_buffer.c

+2 −2
Original line number Original line Diff line number Diff line
@@ -3039,7 +3039,7 @@ int ring_buffer_write(struct ring_buffer *buffer, 
}

}

EXPORT_SYMBOL_GPL(ring_buffer_write);

EXPORT_SYMBOL_GPL(ring_buffer_write);





static int rb_per_cpu_empty(struct ring_buffer_per_cpu *cpu_buffer)

static bool rb_per_cpu_empty(struct ring_buffer_per_cpu *cpu_buffer)

{

{

	struct buffer_page *reader = cpu_buffer->reader_page;

	struct buffer_page *reader = cpu_buffer->reader_page;

	struct buffer_page *head = rb_set_head_page(cpu_buffer);

	struct buffer_page *head = rb_set_head_page(cpu_buffer);
@@ -3047,7 +3047,7 @@ static int rb_per_cpu_empty(struct ring_buffer_per_cpu *cpu_buffer) 




	/* In case of error, head will be NULL */

	/* In case of error, head will be NULL */

	if (unlikely(!head))

	if (unlikely(!head))

		return 1;

		return true;





	return reader->read == rb_page_commit(reader) &&

	return reader->read == rb_page_commit(reader) &&

		(commit == reader ||

		(commit == reader ||