Merge branch 'linus' into tracing/ftrace

[linux-2.6-omap-h63xx.git] / arch / x86 / Kconfig.debug

diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index 239fd9fba0a5fd8737aff15585494ae1d0176611..f395fd537c5c60364cd9e6f31195a9a9e16ed0f7 100644 (file)
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -6,15 +6,19 @@ config TRACE_IRQFLAGS_SUPPORT
 source "lib/Kconfig.debug"
 
 config NONPROMISC_DEVMEM
-       bool "Disable promiscuous /dev/mem"
+       bool "Filter access to /dev/mem"
        help
-         The /dev/mem file by default only allows userspace access to PCI
-         space and the BIOS code and data regions. This is sufficient for
-         dosemu and X and all common users of /dev/mem. With this config
-         option, you allow userspace access to all of memory, including
-         kernel and userspace memory. Accidental access to this is
-         obviously disasterous, but specific access can be used by people
-         debugging the kernel.
+         If this option is left off, you allow userspace access to all
+         of memory, including kernel and userspace memory. Accidental
+         access to this is obviously disastrous, but specific access can
+         be used by people debugging the kernel.
+
+         If this option is switched on, the /dev/mem file only allows
+         userspace access to PCI space and the BIOS code and data regions.
+         This is sufficient for dosemu and X and all common users of
+         /dev/mem.
+
+         If in doubt, say Y.
 
 config EARLY_PRINTK
        bool "Early printk" if EMBEDDED
@@ -118,7 +122,6 @@ config DEBUG_NX_TEST
 config 4KSTACKS
        bool "Use 4Kb for kernel stacks instead of 8Kb"
        depends on X86_32
-       default y
        help
          If you say Y here the kernel will use a 4Kb stacksize for the
          kernel stack attached to each process/thread. This facilitates
@@ -169,6 +172,14 @@ config IOMMU_LEAK
          Add a simple leak tracer to the IOMMU code. This is useful when you
          are debugging a buggy device driver that leaks IOMMU mappings.
 
+config PAGE_FAULT_HANDLERS
+       bool "Custom page fault handlers"
+       depends on DEBUG_KERNEL
+       help
+         Allow the use of custom page fault handlers. A kernel module may
+         register a function that is called on every page fault. Custom
+         handlers are used by some debugging and reverse engineering tools.
+
 #
 # IO delay types:
 #
@@ -256,4 +267,18 @@ config CPA_DEBUG
        help
          Do change_page_attr() self-tests every 30 seconds.
 
+config OPTIMIZE_INLINING
+       bool "Allow gcc to uninline functions marked 'inline'"
+       depends on BROKEN
+       help
+         This option determines if the kernel forces gcc to inline the functions
+         developers have marked 'inline'. Doing so takes away freedom from gcc to
+         do what it thinks is best, which is desirable for the gcc 3.x series of
+         compilers. The gcc 4.x series have a rewritten inlining algorithm and
+         disabling this option will generate a smaller kernel there. Hopefully
+         this algorithm is so good that allowing gcc4 to make the decision can
+         become the default in the future, until then this option is there to
+         test gcc for this.
+
 endmenu
+