From 3cc2b013d8f105ff299af3e9dc8830c7da82522c Mon Sep 17 00:00:00 2001
From: Christian Neukirchen <chneukirchen@gmail.com>
Date: Thu, 28 Aug 2014 14:40:27 +0200
Subject: [PATCH] sysprof: patch for ARM to implement rmb

---
 srcpkgs/sysprof/patches/arm.patch | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 srcpkgs/sysprof/patches/arm.patch

diff --git a/srcpkgs/sysprof/patches/arm.patch b/srcpkgs/sysprof/patches/arm.patch
new file mode 100644
index 00000000000..58274c60913
--- /dev/null
+++ b/srcpkgs/sysprof/patches/arm.patch
@@ -0,0 +1,16 @@
+--- util.h 2010-12-07 22:41:57.156243001 -0600
++++ util.h 2010-12-07 22:43:47.616243002 -0600
+@@ -37,4 +37,13 @@
+ #define cpu_relax()     asm volatile("" ::: "memory");
+ #endif
+ 
++#ifdef __arm__
++/*
++ * Use the __kuser_memory_barrier helper in the CPU helper page. See
++ * arch/arm/kernel/entry-armv.S in the kernel source for details.
++ */
++#define rmb()           ((void(*)(void))0xffff0fa0)()
++#define cpu_relax()     asm volatile("":::"memory")
++#endif
++
+ #endif