From: Yaowei Bai Date: Tue, 29 Sep 2015 14:43:33 +0000 (+0800) Subject: ring-buffer: rb_per_cpu_empty() can return boolean X-Git-Tag: firefly_0821_release~176^2~700^2~20 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=da58834cf2fa83fe3885753009fecaa49a85f246;p=firefly-linux-kernel-4.4.55.git 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: Yaowei Bai Signed-off-by: Steven Rostedt --- diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index fc9ce12666be..a22878923a30 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -3039,7 +3039,7 @@ 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); @@ -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 */ if (unlikely(!head)) - return 1; + return true; return reader->read == rb_page_commit(reader) && (commit == reader ||