From d1f9460b4803806a149ae2a1b1727f5fce01da7b Mon Sep 17 00:00:00 2001
From: Steven Rostedt <srostedt@redhat.com>
Date: Wed, 10 Oct 2012 21:44:34 -0400
Subject: [PATCH] --- yaml --- r: 338993 b: refs/heads/master c:
 b382ede6b5eb8188926b72a9ef42fd2354342a97 h: refs/heads/master i:   338991:
 4b65b08c5e8be510a5fcded62283a1936393d993 v: v3

---
 [refs]                     | 2 +-
 trunk/kernel/trace/trace.c | 7 +++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 1ef830eb91f7..14b69571fe0b 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 884bfe89a462fcc85c8abd96171519cf2fe70929
+refs/heads/master: b382ede6b5eb8188926b72a9ef42fd2354342a97
diff --git a/trunk/kernel/trace/trace.c b/trunk/kernel/trace/trace.c
index 36c213fbfce7..a5411b7414b1 100644
--- a/trunk/kernel/trace/trace.c
+++ b/trunk/kernel/trace/trace.c
@@ -1571,6 +1571,9 @@ void trace_printk_init_buffers(void)
 
 	pr_info("ftrace: Allocated trace_printk buffers\n");
 
+	/* Expand the buffers to set size */
+	tracing_update_buffers();
+
 	buffers_allocated = 1;
 }
 
@@ -3030,6 +3033,10 @@ static int __tracing_resize_ring_buffer(unsigned long size, int cpu)
 	 */
 	ring_buffer_expanded = 1;
 
+	/* May be called before buffers are initialized */
+	if (!global_trace.buffer)
+		return 0;
+
 	ret = ring_buffer_resize(global_trace.buffer, size, cpu);
 	if (ret < 0)
 		return ret;