1 files changed, 19 insertions, 0 deletions

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 91344af75f39..2fd0b99afc4b 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -2,6 +2,20 @@ menu "Kernel hacking"
 
 source "lib/Kconfig.debug"
 
+config STRICT_DEVMEM
+        bool "Filter access to /dev/mem"
+        depends on MMU
+        ---help---
+          If this option is disabled, you allow userspace (root) 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 memory mapped peripherals.
+
+          If in doubt, say Y.
+
 # RMK wants arm kernels compiled with frame pointers or stack unwinding.
 # If you know what you are doing and are willing to live without stack
 # traces, you can get a slightly smaller kernel by setting this option to
@@ -27,6 +41,11 @@ config ARM_UNWIND
           the performance is not affected. Currently, this feature
           only works with EABI compilers. If unsure say Y.
 
+config OLD_MCOUNT
+        bool
+        depends on FUNCTION_TRACER && FRAME_POINTER
+        default y
+
 config DEBUG_USER
         bool "Verbose user fault messages"
         help