[SPARC64]: Add CONFIG_DEBUG_PAGEALLOC support.

[deliverable/linux.git] / arch / sparc64 / Kconfig.debug

diff --git a/arch/sparc64/Kconfig.debug b/arch/sparc64/Kconfig.debug
index af0e9411b83e62fbbb6539eadc0bd2cdcdc34f13..fa06ea04837b9525da90580e0c4db0a3d9f3a952 100644 (file)
--- a/arch/sparc64/Kconfig.debug
+++ b/arch/sparc64/Kconfig.debug
@@ -33,6 +33,14 @@ config DEBUG_BOOTMEM
        depends on DEBUG_KERNEL
        bool "Debug BOOTMEM initialization"
 
+config DEBUG_PAGEALLOC
+       bool "Page alloc debugging"
+       depends on DEBUG_KERNEL && !SOFTWARE_SUSPEND
+       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 MCOUNT
        bool
        depends on STACK_DEBUG