+config PRINTK_TIME
+ bool "Show timing information on printks"
+ help
+ Selecting this option causes timing information to be
+ included in printk output. This allows you to measure
+ the interval between kernel operations, including bootup
+ operations. This is useful for identifying long delays
+ in kernel startup.
+
+
config DEBUG_KERNEL
bool "Kernel debugging"
- depends on (ALPHA || ARM || CRIS || H8300 || X86 || IA64 || M32R || M68K || M68KNOMMU || MIPS || PARISC || PPC32 || PPC64 || ARCH_S390 || SUPERH || SUPERH64 || SPARC32 || SPARC64 || USERMODE || V850 || X86_64)
help
Say Y here if you are developing drivers or trying to debug and
identify kernel problems.
config MAGIC_SYSRQ
bool "Magic SysRq key"
- depends on DEBUG_KERNEL && (ALPHA || ARM || X86 || IA64 || M32R || M68K || MIPS || PARISC || PPC32 || PPC64 || ARCH_S390 || SUPERH || SUPERH64 || SPARC32 || SPARC64 || X86_64 || USERMODE)
+ depends on DEBUG_KERNEL && !UML
help
If you say Y here, you will have some control over the system even
if the system crashes for example during kernel debugging (e.g., you
keys are documented in <file:Documentation/sysrq.txt>. Don't say Y
unless you really know what this hack does.
-config MAGIC_SYSRQ
- bool "Magic SysRq key"
- depends on DEBUG_KERNEL && (H8300 || M68KNOMMU || V850)
- help
- Enables console device to interpret special characters as
- commands to dump state information.
+config LOG_BUF_SHIFT
+ int "Kernel log buffer size (16 => 64KB, 17 => 128KB)" if DEBUG_KERNEL
+ range 12 21
+ default 17 if ARCH_S390
+ default 16 if X86_NUMAQ || IA64
+ default 15 if SMP
+ default 14
+ help
+ Select kernel log buffer size as a power of 2.
+ Defaults and Examples:
+ 17 => 128 KB for S/390
+ 16 => 64 KB for x86 NUMAQ or IA-64
+ 15 => 32 KB for SMP
+ 14 => 16 KB for uniprocessor
+ 13 => 8 KB
+ 12 => 4 KB
config SCHEDSTATS
bool "Collect scheduler statistics"
config DEBUG_SLAB
bool "Debug memory allocations"
- depends on DEBUG_KERNEL && (ALPHA || ARM || X86 || IA64 || M32R || M68K || MIPS || PARISC || PPC32 || PPC64 || ARCH_S390 || SPARC32 || SPARC64 || USERMODE || X86_64)
+ depends on DEBUG_KERNEL
help
Say Y here to have the kernel do limited verification on memory
allocation as well as poisoning memory on free to catch use of freed
config DEBUG_PREEMPT
bool "Debug preemptible kernel"
- depends on PREEMPT
+ depends on DEBUG_KERNEL && PREEMPT
default y
help
If you say Y here then the kernel will use a debug variant of the
config DEBUG_SPINLOCK
bool "Spinlock debugging"
- depends on DEBUG_KERNEL && (ALPHA || ARM || X86 || IA64 || M32R || MIPS || PARISC || PPC32 || (SUPERH && !SUPERH64) || SPARC32 || SPARC64 || USERMODE || X86_64)
+ depends on DEBUG_KERNEL
help
Say Y here and build SMP to catch missing spinlock initialization
and certain other kinds of spinlock errors commonly made. This is
config DEBUG_SPINLOCK_SLEEP
bool "Sleep-inside-spinlock checking"
- depends on DEBUG_KERNEL && (X86 || IA64 || M32R || MIPS || PPC32 || PPC64 || ARCH_S390 || SPARC32 || SPARC64 || USERMODE)
+ depends on DEBUG_KERNEL
help
If you say Y here, various routines which may sleep will become very
noisy if they are called with a spinlock held.
config DEBUG_HIGHMEM
bool "Highmem debugging"
- depends on DEBUG_KERNEL && HIGHMEM && (X86 || PPC32 || MIPS || SPARC32)
+ depends on DEBUG_KERNEL && HIGHMEM
help
This options enables addition error checking for high memory systems.
Disable for production systems.
config DEBUG_BUGVERBOSE
bool "Verbose BUG() reporting (adds 70K)" if DEBUG_KERNEL && EMBEDDED
- depends on ARM || ARM26 || M32R || M68K || SPARC32 || SPARC64 || (X86 && !X86_64)
+ depends on BUG
+ depends on ARM || ARM26 || M32R || M68K || SPARC32 || SPARC64 || (X86 && !X86_64) || FRV
default !EMBEDDED
help
Say Y here to make BUG() panics output the file name and line number
config DEBUG_INFO
bool "Compile the kernel with debug info"
- depends on DEBUG_KERNEL && (ALPHA || CRIS || X86 || IA64 || M32R || M68K || MIPS || PARISC || PPC32 || PPC64 || ARCH_S390 || (SUPERH && !SUPERH64) || SPARC64 || V850 || X86_64)
+ depends on DEBUG_KERNEL
help
If you say Y here the resulting kernel image will include
debugging info resulting in a larger kernel image.
- Say Y here only if you plan to use gdb to debug the kernel.
- If you don't debug the kernel, you can say N.
+ Say Y here only if you plan to debug the kernel.
-config DEBUG_INFO
- bool "Enable kernel debugging symbols"
- depends on DEBUG_KERNEL && USERMODE
- help
- When this is enabled, the User-Mode Linux binary will include
- debugging symbols. This enlarges the binary by a few megabytes,
- but aids in tracking down kernel problems in UML. It is required
- if you intend to do any kernel development.
-
- If you're truly short on disk space or don't expect to report any
- bugs back to the UML developers, say N, otherwise say Y.
+ If unsure, say N.
config DEBUG_IOREMAP
bool "Enable ioremap() debugging"
If unsure, say N.
-if !X86_64
config FRAME_POINTER
bool "Compile the kernel with frame pointers"
- depends on X86 || CRIS || M68KNOMMU
+ depends on DEBUG_KERNEL && ((X86 && !X86_64) || CRIS || M68K || M68KNOMMU || FRV || UML)
+ default y if DEBUG_INFO && UML
help
If you say Y here the resulting kernel image will be slightly larger
and slower, but it will give very useful debugging information.
If you don't debug the kernel, you can say N, but we may not be able
to solve problems without frame pointers.
-endif
+
git://git.onelab.eu / linux-2.6.git / blobdiff