xfs: switch to NOFS allocation under i_lock in xfs_getbmap

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

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 9638d99..116a350 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -186,6 +186,44 @@ config BOOTPARAM_SOFTLOCKUP_PANIC_VALUE
        default 0 if !BOOTPARAM_SOFTLOCKUP_PANIC
        default 1 if BOOTPARAM_SOFTLOCKUP_PANIC
 
+config DETECT_HUNG_TASK
+       bool "Detect Hung Tasks"
+       depends on DEBUG_KERNEL
+       default DETECT_SOFTLOCKUP
+       help
+         Say Y here to enable the kernel to detect "hung tasks",
+         which are bugs that cause the task to be stuck in
+         uninterruptible "D" state indefinitiley.
+
+         When a hung task is detected, the kernel will print the
+         current stack trace (which you should report), but the
+         task will stay in uninterruptible state. If lockdep is
+         enabled then all held locks will also be reported. This
+         feature has negligible overhead.
+
+config BOOTPARAM_HUNG_TASK_PANIC
+       bool "Panic (Reboot) On Hung Tasks"
+       depends on DETECT_HUNG_TASK
+       help
+         Say Y here to enable the kernel to panic on "hung tasks",
+         which are bugs that cause the kernel to leave a task stuck
+         in uninterruptible "D" state.
+
+         The panic can be used in combination with panic_timeout,
+         to cause the system to reboot automatically after a
+         hung task has been detected. This feature is useful for
+         high-availability systems that have uptime guarantees and
+         where a hung tasks must be resolved ASAP.
+
+         Say N if unsure.
+
+config BOOTPARAM_HUNG_TASK_PANIC_VALUE
+       int
+       depends on DETECT_HUNG_TASK
+       range 0 1
+       default 0 if !BOOTPARAM_HUNG_TASK_PANIC
+       default 1 if BOOTPARAM_HUNG_TASK_PANIC
+
 config SCHED_DEBUG
        bool "Collect scheduler debugging info"
        depends on DEBUG_KERNEL && PROC_FS
@@ -298,6 +336,38 @@ config SLUB_STATS
          out which slabs are relevant to a particular load.
          Try running: slabinfo -DA
 
+config DEBUG_KMEMLEAK
+       bool "Kernel memory leak detector"
+       depends on DEBUG_KERNEL && EXPERIMENTAL && (X86 || ARM) && \
+               !MEMORY_HOTPLUG
+       select DEBUG_SLAB if SLAB
+       select SLUB_DEBUG if SLUB
+       select DEBUG_FS if SYSFS
+       select STACKTRACE if STACKTRACE_SUPPORT
+       select KALLSYMS
+       help
+         Say Y here if you want to enable the memory leak
+         detector. The memory allocation/freeing is traced in a way
+         similar to the Boehm's conservative garbage collector, the
+         difference being that the orphan objects are not freed but
+         only shown in /sys/kernel/debug/kmemleak. Enabling this
+         feature will introduce an overhead to memory
+         allocations. See Documentation/kmemleak.txt for more
+         details.
+
+         In order to access the kmemleak file, debugfs needs to be
+         mounted (usually at /sys/kernel/debug).
+
+config DEBUG_KMEMLEAK_TEST
+       tristate "Simple test for the kernel memory leak detector"
+       depends on DEBUG_KMEMLEAK
+       help
+         Say Y or M here to build a test for the kernel memory leak
+         detector. This option enables a module that explicitly leaks
+         memory.
+
+         If unsure, say N.
+
 config DEBUG_PREEMPT
        bool "Debug preemptible kernel"
        depends on DEBUG_KERNEL && PREEMPT && (TRACE_IRQFLAGS_SUPPORT || PPC64)
@@ -402,7 +472,7 @@ 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
 
@@ -582,7 +652,7 @@ 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
@@ -771,13 +841,13 @@ 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
@@ -853,7 +923,6 @@ config DYNAMIC_DEBUG
        default n
        depends on PRINTK
        depends on DEBUG_FS
-       select PRINTK_DEBUG
        help
 
          Compiles debug level messages into the kernel, which would not