From: Ingo Molnar <mingo@elte.hu>
Date: Mon, 5 Dec 2011 11:25:44 +0000 (+0100)
Subject: x86: Fix the 32-bit stackoverflow-debug build
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=53b5650273fea486ac8ac6c1d1e9a6cd17aa31ca;p=linux-beck.git

x86: Fix the 32-bit stackoverflow-debug build

The panic_on_stackoverflow variable needs to be avilable
on the 32-bit side as well ...

Cc: Mitsuo Hayasaka <mitsuo.hayasaka.hu@hitachi.com>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Link: http://lkml.kernel.org/r/20111129060836.11076.12323.stgit@ltc219.sdl.hitachi.co.jp
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/arch/x86/kernel/irq_32.c b/arch/x86/kernel/irq_32.c
index e16e99ebd7ad..40fc86161d92 100644
--- a/arch/x86/kernel/irq_32.c
+++ b/arch/x86/kernel/irq_32.c
@@ -28,6 +28,9 @@ DEFINE_PER_CPU(struct pt_regs *, irq_regs);
 EXPORT_PER_CPU_SYMBOL(irq_regs);
 
 #ifdef CONFIG_DEBUG_STACKOVERFLOW
+
+int sysctl_panic_on_stackoverflow __read_mostly;
+
 /* Debugging check for stack overflow: is there less than 1KB free? */
 static int check_stack_overflow(void)
 {