mm: vmap fix overflow

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

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 2e75478..1bcf9cd 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -512,6 +512,13 @@ config DEBUG_VIRTUAL
 
          If unsure, say N.
 
+config DEBUG_NOMMU_REGIONS
+       bool "Debug the global anon/private NOMMU mapping region tree"
+       depends on DEBUG_KERNEL && !MMU
+       help
+         This option causes the global tree of anonymous and private mapping
+         regions to be regularly checked for invalid topology.
+
 config DEBUG_WRITECOUNT
        bool "Debug filesystem writers count"
        depends on DEBUG_KERNEL
@@ -563,17 +570,26 @@ config DEBUG_NOTIFIERS
          This is a relatively cheap check but if you care about maximum
          performance, say N.
 
+#
+# Select this config option from the architecture Kconfig, if it
+# it is preferred to always offer frame pointers as a config
+# option on the architecture (regardless of KERNEL_DEBUG):
+#
+config ARCH_WANT_FRAME_POINTERS
+       bool
+       help
+
 config FRAME_POINTER
        bool "Compile the kernel with frame pointers"
        depends on DEBUG_KERNEL && \
-               (X86 || CRIS || M68K || M68KNOMMU || FRV || UML || S390 || \
-                AVR32 || SUPERH || BLACKFIN || MN10300)
-       default y if DEBUG_INFO && UML
+               (CRIS || M68K || M68KNOMMU || FRV || UML || S390 || \
+                AVR32 || SUPERH || BLACKFIN || MN10300) || \
+               ARCH_WANT_FRAME_POINTERS
+       default y if (DEBUG_INFO && UML) || ARCH_WANT_FRAME_POINTERS
        help
-         If you say Y here the resulting kernel image will be slightly larger
-         and slower, but it might give very useful debugging information on
-         some architectures or if you use external debuggers.
-         If you don't debug the kernel, you can say N.
+         If you say Y here the resulting kernel image will be slightly
+         larger and slower, but it gives very useful debugging information
+         in case of kernel bugs. (precise oopses/stacktraces/warnings)
 
 config BOOT_PRINTK_DELAY
        bool "Delay each boot printk message by N milliseconds"
@@ -626,19 +642,6 @@ config RCU_TORTURE_TEST_RUNNABLE
 
 config RCU_CPU_STALL_DETECTOR
        bool "Check for stalled CPUs delaying RCU grace periods"
-       depends on CLASSIC_RCU
-       default n
-       help
-         This option causes RCU to printk information on which
-         CPUs are delaying the current grace period, but only when
-         the grace period extends for excessive time periods.
-
-         Say Y if you want RCU to perform such checks.
-
-         Say N if you are unsure.
-
-config RCU_CPU_STALL_DETECTOR
-       bool "Check for stalled CPUs delaying RCU grace periods"
        depends on CLASSIC_RCU || TREE_RCU
        default n
        help
@@ -835,7 +838,7 @@ config FIREWIRE_OHCI_REMOTE_DMA
 
          If unsure, say N.
 
-menuconfig BUILD_DOCSRC
+config BUILD_DOCSRC
        bool "Build targets in Documentation/ tree"
        depends on HEADERS_CHECK
        help