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[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>
This commit is contained in:
Heiko Carstens 2010-11-10 10:05:56 +01:00 committed by Martin Schwidefsky
parent ec6743bb06
commit becf91f187
1 changed files with 1 additions and 1 deletions
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2
kernel/trace/Kconfig
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@ -126,7 +126,7 @@ if FTRACE
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