powerpc: Make STRICT_MM_TYPECHECKS a config option

The STRICT_MM_TYPECHECKS code has bit-rotted over the years. To make it
possible to easily build test it, make it a CONFIG option.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index 0efa8f9..3a510f4 100644 (file)
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -19,6 +19,14 @@ config PPC_WERROR
        depends on !PPC_DISABLE_WERROR
        default y
 
+config STRICT_MM_TYPECHECKS
+       bool "Do extra type checking on mm types"
+       default n
+       help
+         This option turns on extra type checking for some mm related types.
+
+         If you don't know what this means, say N.
+
 config PRINT_STACK_DEPTH
        int "Stack depth to print" if DEBUG_KERNEL
        default 64

diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h
index 69c0598..71294a6 100644 (file)
--- a/arch/powerpc/include/asm/page.h
+++ b/arch/powerpc/include/asm/page.h
@@ -278,9 +278,7 @@ extern long long virt_phys_offset;
 
 #ifndef __ASSEMBLY__
 
-#undef STRICT_MM_TYPECHECKS
-
-#ifdef STRICT_MM_TYPECHECKS
+#ifdef CONFIG_STRICT_MM_TYPECHECKS
 /* These are used to make use of C type-checking. */
 
 /* PTE level */

diff --git a/arch/powerpc/include/asm/pgtable-ppc64.h b/arch/powerpc/include/asm/pgtable-ppc64.h
index 43e6ad4..f951d9c 100644 (file)
--- a/arch/powerpc/include/asm/pgtable-ppc64.h
+++ b/arch/powerpc/include/asm/pgtable-ppc64.h
@@ -118,7 +118,7 @@
  */
 #ifndef __real_pte
 
-#ifdef STRICT_MM_TYPECHECKS
+#ifdef CONFIG_STRICT_MM_TYPECHECKS
 #define __real_pte(e,p)                ((real_pte_t){(e)})
 #define __rpte_to_pte(r)       ((r).pte)
 #else