From: H. Peter Anvin <hpa@linux.intel.com>
Date: Wed, 21 Nov 2012 06:21:02 +0000 (-0800)
Subject: x86-32: Export kernel_stack_pointer() for modules
X-Git-Tag: v3.6.9~50
X-Git-Url: https://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Fstable%2Flinux-stable.git;a=commitdiff_plain;h=051d62f6f239a9427fcab244a310610ed8bedb43

x86-32: Export kernel_stack_pointer() for modules

commit cb57a2b4cff7edf2a4e32c0163200e9434807e0a upstream.

Modules, in particular oprofile (and possibly other similar tools)
need kernel_stack_pointer(), so export it using EXPORT_SYMBOL_GPL().

Link: http://lkml.kernel.org/r/20120912135059.GZ8285@erda.amd.com
Cc: Yang Wei <wei.yang@windriver.com>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Jun Zhang <jun.zhang@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 947cf90..9ee1787 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -21,6 +21,7 @@
 #include <linux/signal.h>
 #include <linux/perf_event.h>
 #include <linux/hw_breakpoint.h>
+#include <linux/module.h>
 
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
@@ -192,6 +193,7 @@ unsigned long kernel_stack_pointer(struct pt_regs *regs)
 
 	return (unsigned long)regs;
 }
+EXPORT_SYMBOL_GPL(kernel_stack_pointer);
 
 static unsigned long *pt_regs_access(struct pt_regs *regs, unsigned long regno)
 {