From: Steven Rostedt <srostedt@redhat.com>
Date: Thu, 11 Jun 2009 13:49:15 +0000 (-0400)
Subject: ring-buffer: remove useless warn on check
X-Git-Tag: firefly_0821_release~13685^2~1^2~5
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c6a9d7b55e2df63de012a9a285bf2a0bee8e4d59;p=firefly-linux-kernel-4.4.55.git

ring-buffer: remove useless warn on check

A check if "write > BUF_PAGE_SIZE" is done right after a

	if (write > BUF_PAGE_SIZE)
		return ...;

Thus the check is actually testing the compiler and not the
kernel. This is useless, remove it.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---

diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 6b17a11e42a2..6cf340e1a4a3 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -1334,9 +1334,6 @@ __rb_reserve_next(struct ring_buffer_per_cpu *cpu_buffer,
 
 	/* We reserved something on the buffer */
 
-	if (RB_WARN_ON(cpu_buffer, write > BUF_PAGE_SIZE))
-		return NULL;
-
 	event = __rb_page_index(tail_page, tail);
 	rb_update_event(event, type, length);