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[S390] omit frame pointers on s390 when possible

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Always omit frame pointers on s390. They aren't too useful for the
kernel since we have already the kernel stack backchain which allows
us to walk the kernel stack.
So eleminate the extra code for frame pointers. Only allow the extra
code for the function tracer since the gcc compile options -pg and
-fomit-frame-pointer are incompatible.

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 2009-04-23 13:58:10 +02:00 committed by Martin Schwidefsky
parent 4d7a3cdfb4
commit 75ee034add
1 changed files with 4 additions and 4 deletions
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8
lib/Kconfig.debug
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@ -440,7 +440,7 @@ config LOCKDEP
bool
depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
select STACKTRACE
select FRAME_POINTER if !X86 && !MIPS && !PPC && !ARM_UNWIND
select FRAME_POINTER if !X86 && !MIPS && !PPC && !ARM_UNWIND && !S390
select KALLSYMS
select KALLSYMS_ALL
@ -620,7 +620,7 @@ config ARCH_WANT_FRAME_POINTERS
config FRAME_POINTER
bool "Compile the kernel with frame pointers"
depends on DEBUG_KERNEL && \
(CRIS || M68K || M68KNOMMU || FRV || UML || S390 || \
(CRIS || M68K || M68KNOMMU || FRV || UML || \
AVR32 || SUPERH || BLACKFIN || MN10300) || \
ARCH_WANT_FRAME_POINTERS
default y if (DEBUG_INFO && UML) || ARCH_WANT_FRAME_POINTERS
@ -809,13 +809,13 @@ config FAULT_INJECTION_STACKTRACE_FILTER
depends on FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT
depends on !X86_64
select STACKTRACE
select FRAME_POINTER if !PPC
select FRAME_POINTER if !PPC && !S390
help
Provide stacktrace filter for fault-injection capabilities
config LATENCYTOP
bool "Latency measuring infrastructure"
select FRAME_POINTER if !MIPS && !PPC
select FRAME_POINTER if !MIPS && !PPC && !S390
select KALLSYMS
select KALLSYMS_ALL
select STACKTRACE