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authorHeiko Carstens <heiko.carstens@de.ibm.com>2009-04-23 13:58:10 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2009-04-23 13:58:18 +0200
commit75ee034addc9ac3f6a38a9e6b30e9b54be15d4e5 (patch)
treefd7abe59eb592267284919a26d0778c4e951d772
parent4d7a3cdfb4c9aa1e2ce61f3b16b24eb6acf6726d (diff)
downloadop-kernel-dev-75ee034addc9ac3f6a38a9e6b30e9b54be15d4e5.zip
op-kernel-dev-75ee034addc9ac3f6a38a9e6b30e9b54be15d4e5.tar.gz
[S390] omit frame pointers on s390 when possible
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>
-rw-r--r--lib/Kconfig.debug8
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index c6e854f..812c282 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -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
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