commit becf91f18750cf1c60828aa2ee63a36b05c2e4d0
author Heiko Carstens <heiko.carstens@de.ibm.com> Wed Nov 10 10:05:56 2010 +0100
committer Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> Wed Nov 10 10:05:54 2010 +0100
tree 3b97a843ef2aaad89250ec8b8897474ad0169c44
parent ec6743bb06510c7b629603ce35713d6ae9273579

[S390] ftrace: build without frame pointers on s390

s390 doesn't need FRAME_POINTERS in order to have a working function tracer.
We don't need frame pointers in order to get strack traces since we always
have valid backchains by using the -mkernel-backchain gcc option.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

kernel/trace/Kconfig

diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index e04b8bc..ea37e2f 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -126,7 +126,7 @@
 config FUNCTION_TRACER
 	bool "Kernel Function Tracer"
 	depends on HAVE_FUNCTION_TRACER
-	select FRAME_POINTER if (!ARM_UNWIND)
+	select FRAME_POINTER if !ARM_UNWIND && !S390
 	select KALLSYMS
 	select GENERIC_TRACER
 	select CONTEXT_SWITCH_TRACER