X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fx86_64%2FKconfig.debug;h=ea31b4c62105cfc808ce0278bee31228dd0bab23;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=9cf1410d2f5ab0fbcab1a965637f556571c2a6df;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git

diff --git a/arch/x86_64/Kconfig.debug b/arch/x86_64/Kconfig.debug
index 9cf1410d2..ea31b4c62 100644
--- a/arch/x86_64/Kconfig.debug
+++ b/arch/x86_64/Kconfig.debug
@@ -2,21 +2,15 @@ menu "Kernel hacking"
 
 source "lib/Kconfig.debug"
 
-# !SMP for now because the context switch early causes GPF in segment reloading
-# and the GS base checking does the wrong thing then, causing a hang.
-config CHECKING
-	bool "Additional run-time checks"
-	depends on DEBUG_KERNEL && !SMP
-	help
-	  Enables some internal consistency checks for kernel debugging.
-	  You should normally say N.
-
-config INIT_DEBUG
-	bool "Debug __init statements"
-	depends on DEBUG_KERNEL
-	help
-	  Fill __init and __initdata at the end of boot. This helps debugging
-	  illegal uses of __init and __initdata after initialization.
+config DEBUG_RODATA
+       bool "Write protect kernel read-only data structures"
+       depends on DEBUG_KERNEL
+       help
+	 Mark the kernel read-only data as write-protected in the pagetables,
+	 in order to catch accidental (and incorrect) writes to such const data.
+	 This option may have a slight performance impact because a portion
+	 of the kernel code won't be covered by a 2MB TLB anymore.
+	 If in doubt, say "N".
 
 config IOMMU_DEBUG
        depends on GART_IOMMU && DEBUG_KERNEL
@@ -33,16 +27,6 @@ config IOMMU_DEBUG
 	 options. See Documentation/x86_64/boot-options.txt for more
 	 details.
 
-config KPROBES
-	bool "Kprobes"
-	depends on DEBUG_KERNEL
-	help
-	  Kprobes allows you to trap at almost any kernel address and
-	  execute a callback function.  register_kprobe() establishes
-	  a probepoint and specifies the callback.  Kprobes is useful
-	  for kernel debugging, non-intrusive instrumentation and testing.
-	  If in doubt, say "N".
-
 config IOMMU_LEAK
        bool "IOMMU leak tracing"
        depends on DEBUG_KERNEL