string: factorize skip_spaces and export it to be generally available

[safe/jmp/linux-2.6] / lib / Kconfig.debug

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index d5ca9a5..8cf9938 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -50,6 +50,14 @@ config MAGIC_SYSRQ
          keys are documented in <file:Documentation/sysrq.txt>. Don't say Y
          unless you really know what this hack does.
 
+config STRIP_ASM_SYMS
+       bool "Strip assembler-generated symbols during link"
+       default n
+       help
+         Strip internal assembler-generated symbols during a link (symbols
+         that look like '.Lxxx') so they don't pollute the output of
+         get_wchan() and suchlike.
+
 config UNUSED_SYMBOLS
        bool "Enable unused/obsolete exported symbols"
        default y if X86
@@ -97,7 +105,7 @@ config DEBUG_SECTION_MISMATCH
        bool "Enable full Section mismatch analysis"
        depends on UNDEFINED
        # This option is on purpose disabled for now.
-       # It will be enabled when we are down to a resonable number
+       # It will be enabled when we are down to a reasonable number
        # of section mismatch warnings (< 10 for an allyesconfig build)
        help
          The section mismatch analysis checks if there are illegal
@@ -290,6 +298,14 @@ config DEBUG_OBJECTS_TIMERS
          timer routines to track the life time of timer objects and
          validate the timer operations.
 
+config DEBUG_OBJECTS_WORK
+       bool "Debug work objects"
+       depends on DEBUG_OBJECTS
+       help
+         If you say Y here, additional code will be inserted into the
+         work queue routines to track the life time of work objects and
+         validate the work operations.
+
 config DEBUG_OBJECTS_ENABLE_DEFAULT
        int "debug_objects bootup default value (0-1)"
         range 0 1
@@ -338,8 +354,9 @@ config SLUB_STATS
 
 config DEBUG_KMEMLEAK
        bool "Kernel memory leak detector"
-       depends on DEBUG_KERNEL && EXPERIMENTAL && (X86 || ARM || PPC) && \
-               !MEMORY_HOTPLUG
+       depends on DEBUG_KERNEL && EXPERIMENTAL && !MEMORY_HOTPLUG && \
+               (X86 || ARM || PPC || S390)
+
        select DEBUG_FS if SYSFS
        select STACKTRACE if STACKTRACE_SUPPORT
        select KALLSYMS
@@ -362,7 +379,7 @@ config DEBUG_KMEMLEAK
 config DEBUG_KMEMLEAK_EARLY_LOG_SIZE
        int "Maximum kmemleak early log entries"
        depends on DEBUG_KMEMLEAK
-       range 200 2000
+       range 200 40000
        default 400
        help
          Kmemleak must track all the memory allocations to avoid
@@ -383,7 +400,7 @@ config DEBUG_KMEMLEAK_TEST
 
 config DEBUG_PREEMPT
        bool "Debug preemptible kernel"
-       depends on DEBUG_KERNEL && PREEMPT && (TRACE_IRQFLAGS_SUPPORT || PPC64)
+       depends on DEBUG_KERNEL && PREEMPT && TRACE_IRQFLAGS_SUPPORT
        default y
        help
          If you say Y here then the kernel will use a debug variant of the
@@ -558,7 +575,7 @@ config DEBUG_BUGVERBOSE
        depends on BUG
        depends on ARM || AVR32 || M32R || M68K || SPARC32 || SPARC64 || \
                   FRV || SUPERH || GENERIC_BUG || BLACKFIN || MN10300
-       default !EMBEDDED
+       default y
        help
          Say Y here to make BUG() panics output the file name and line number
          of the BUG call as well as the EIP and oops trace.  This aids
@@ -653,6 +670,21 @@ config DEBUG_NOTIFIERS
          This is a relatively cheap check but if you care about maximum
          performance, say N.
 
+config DEBUG_CREDENTIALS
+       bool "Debug credential management"
+       depends on DEBUG_KERNEL
+       help
+         Enable this to turn on some debug checking for credential
+         management.  The additional code keeps track of the number of
+         pointers from task_structs to any given cred struct, and checks to
+         see that this number never exceeds the usage count of the cred
+         struct.
+
+         Furthermore, if SELinux is enabled, this also checks that the
+         security pointer in the cred struct is never seen to be invalid.
+
+         If unsure, say N.
+
 #
 # Select this config option from the architecture Kconfig, if it
 # it is preferred to always offer frame pointers as a config
@@ -725,8 +757,8 @@ config RCU_TORTURE_TEST_RUNNABLE
 
 config RCU_CPU_STALL_DETECTOR
        bool "Check for stalled CPUs delaying RCU grace periods"
-       depends on CLASSIC_RCU || TREE_RCU
-       default n
+       depends on TREE_RCU || TREE_PREEMPT_RCU
+       default y
        help
          This option causes RCU to printk information on which
          CPUs are delaying the current grace period, but only when
@@ -790,6 +822,21 @@ config DEBUG_BLOCK_EXT_DEVT
 
          Say N if you are unsure.
 
+config DEBUG_FORCE_WEAK_PER_CPU
+       bool "Force weak per-cpu definitions"
+       depends on DEBUG_KERNEL
+       help
+         s390 and alpha require percpu variables in modules to be
+         defined weak to work around addressing range issue which
+         puts the following two restrictions on percpu variable
+         definitions.
+
+         1. percpu symbols must be unique whether static or not
+         2. percpu variables can't be defined inside a function
+
+         To ensure that generic code follows the above rules, this
+         option forces all percpu variables to be defined as weak.
+
 config LKDTM
        tristate "Linux Kernel Dump Test Tool Module"
        depends on DEBUG_KERNEL
@@ -873,7 +920,7 @@ config LATENCYTOP
 
 config SYSCTL_SYSCALL_CHECK
        bool "Sysctl checks"
-       depends on SYSCTL_SYSCALL
+       depends on SYSCTL
        ---help---
          sys_sysctl uses binary paths that have been found challenging
          to properly maintain and use. This enables checks that help