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/[email protected] Signed-off-by: Yaowei Bai <[email protected]> Signed-off-by: Steven Rostedt <[email protected]>
boxfire · Nov 2, 2015 · da58834 · da58834
1 parent 3d4e204
commit da58834
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
@@ -3039,15 +3039,15 @@ int ring_buffer_write(struct ring_buffer *buffer,
 }
 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 *head = rb_set_head_page(cpu_buffer);
 	struct buffer_page *commit = cpu_buffer->commit_page;
 
 	/* In case of error, head will be NULL */
 	if (unlikely(!head))
-		return 1;
+		return true;
 
 	return reader->read == rb_page_commit(reader) &&
 		(commit == reader ||