driver core: add devname module aliases to allow module on-demand auto-loading

[safe/jmp/linux-2.6] / arch / x86 / Kconfig.debug

diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index fdb45df..7508508 100644 (file)
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -45,7 +45,6 @@ config EARLY_PRINTK
 
 config EARLY_PRINTK_DBGP
        bool "Early printk via EHCI debug port"
-       default n
        depends on EARLY_PRINTK && PCI
        ---help---
          Write kernel log output directly into the EHCI debug port.
@@ -72,19 +71,10 @@ config DEBUG_STACK_USAGE
 
          This option will slow down process creation somewhat.
 
-config DEBUG_PAGEALLOC
-       bool "Debug page memory allocations"
-       depends on DEBUG_KERNEL
-       ---help---
-         Unmap pages from the kernel linear mapping after free_pages().
-         This results in a large slowdown, but helps to find certain types
-         of memory corruptions.
-
 config DEBUG_PER_CPU_MAPS
        bool "Debug access to per_cpu maps"
        depends on DEBUG_KERNEL
        depends on SMP
-       default n
        ---help---
          Say Y to verify that the per_cpu map being accessed has
          been setup.  Adds a fair amount of code to kernel memory
@@ -167,10 +157,17 @@ config IOMMU_DEBUG
          options. See Documentation/x86_64/boot-options.txt for more
          details.
 
+config IOMMU_STRESS
+       bool "Enable IOMMU stress-test mode"
+       ---help---
+         This option disables various optimizations in IOMMU related
+         code to do real stress testing of the IOMMU code. This option
+         will cause a performance drop and should only be enabled for
+         testing.
+
 config IOMMU_LEAK
        bool "IOMMU leak tracing"
-       depends on DEBUG_KERNEL
-       depends on IOMMU_DEBUG
+       depends on IOMMU_DEBUG && DMA_API_DEBUG
        ---help---
          Add a simple leak tracer to the IOMMU code. This is useful when you
          are debugging a buggy device driver that leaks IOMMU mappings.
@@ -178,6 +175,15 @@ config IOMMU_LEAK
 config HAVE_MMIOTRACE_SUPPORT
        def_bool y
 
+config X86_DECODER_SELFTEST
+       bool "x86 instruction decoder selftest"
+       depends on DEBUG_KERNEL && KPROBES
+       ---help---
+        Perform x86 instruction decoder selftests at build time.
+        This option is useful for checking the sanity of x86 instruction
+        decoder code.
+        If unsure, say "N".
+
 #
 # IO delay types:
 #
@@ -279,4 +285,18 @@ config OPTIMIZE_INLINING
 
          If unsure, say N.
 
+config DEBUG_STRICT_USER_COPY_CHECKS
+       bool "Strict copy size checks"
+       depends on DEBUG_KERNEL && !TRACE_BRANCH_PROFILING
+       ---help---
+         Enabling this option turns a certain set of sanity checks for user
+         copy operations into compile time failures.
+
+         The copy_from_user() etc checks are there to help test if there
+         are sufficient security checks on the length argument of
+         the copy operation, by having gcc prove that the argument is
+         within bounds.
+
+         If unsure, or if you run an older (pre 4.4) gcc, say N.
+
 endmenu