From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Fri, 12 Jun 2009 08:04:01 +0000 (+0200)
Subject: lockdep: Select frame pointers on x86
X-Git-Tag: v2.6.29.6~17
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=40df2000dc79061fea477c4be54ef93ecc25f04a;p=thirdparty%2Fkernel%2Fstable.git

lockdep: Select frame pointers on x86

commit 00540e5d54be972a94a3b2ce6da8621bebe731a2 upstream.

x86 stack traces are a piece of crap without frame pointers, and its not
like the 'performance gain' of not having stack pointers matters when you
selected lockdep.

Reported-by: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <new-submission>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 1bcf9cd4baa08..a0879b2e8b6bf 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -402,7 +402,7 @@ config LOCKDEP
 	bool
 	depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
 	select STACKTRACE
-	select FRAME_POINTER if !X86 && !MIPS && !PPC
+	select FRAME_POINTER if !MIPS && !PPC
 	select KALLSYMS
 	select KALLSYMS_ALL