[S390] DEBUG_PAGEALLOC support for s390.

[sfrench/cifs-2.6.git] / arch / s390 / Kconfig.debug

diff --git a/arch/s390/Kconfig.debug b/arch/s390/Kconfig.debug
index 2283933a9a93eef48b2de37aefe944540af03ff4..4599fa06bd82a759d322dcd25a85bbfb6edfb369 100644 (file)
--- a/arch/s390/Kconfig.debug
+++ b/arch/s390/Kconfig.debug
@@ -6,4 +6,12 @@ config TRACE_IRQFLAGS_SUPPORT
 
 source "lib/Kconfig.debug"
 
+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 slowdown, but helps to find certain types of
+         memory corruptions.
+
 endmenu