From: Dmitriy Vyukov <dvyukov@google.com>
Date: Fri, 19 Jul 2013 13:47:40 +0000 (+0400)
Subject: runtime: hide mheap from GC
X-Git-Tag: go1.2rc2~996
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=2a6520c2d367020951648379d9df7228f8d7151c;p=gostls13.git

runtime: hide mheap from GC
It contains pointers to first blocks of lots of spans.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/11416046
---

diff --git a/src/pkg/runtime/malloc.goc b/src/pkg/runtime/malloc.goc
index 24ead24c41..352f93f69d 100644
--- a/src/pkg/runtime/malloc.goc
+++ b/src/pkg/runtime/malloc.goc
@@ -15,6 +15,8 @@ package runtime
 #include "race.h"
 #include "stack.h"
 
+// Mark mheap as 'no pointers', it does not contain interesting pointers but occupies ~45K.
+#pragma dataflag 16
 MHeap runtime·mheap;
 
 int32	runtime·checking;