From 1e957b6245d1c204e333738383a6f4aca0b9d86b Mon Sep 17 00:00:00 2001
From: Dmitriy Vyukov <dvyukov@google.com>
Date: Sat, 23 Feb 2013 10:07:41 +0400
Subject: [PATCH] runtime: fix windows cpu profiling

R=golang-dev, alex.brainman
CC=golang-dev
https://golang.org/cl/7407044
---
 src/pkg/runtime/proc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/pkg/runtime/proc.c b/src/pkg/runtime/proc.c
index 4f02d00faa..3a5652c915 100644
--- a/src/pkg/runtime/proc.c
+++ b/src/pkg/runtime/proc.c
@@ -1715,7 +1715,8 @@ runtime·sigprof(uint8 *pc, uint8 *sp, uint8 *lr, G *gp)
 {
 	int32 n;
 
-	if(m == nil || m->mcache == nil)
+	// Windows does profiling in a dedicated thread w/o m.
+	if(!Windows && (m == nil || m->mcache == nil))
 		return;
 	if(prof.fn == nil || prof.hz == 0)
 		return;
-- 
2.48.1