consolidate per-arch stack overflow debugging options

Original posting:

	http://lkml.kernel.org/r/20121214184202.F54094D9@kernel.stglabs.ibm.com

Several architectures have similar stack debugging config options.
They all pretty much do the same thing, some with slightly
differing help text.

This patch changes the architectures to instead enable a Kconfig
boolean, and then use that boolean in the generic Kconfig.debug
to present the actual menu option.  This removes a bunch of
duplication and adds consistency across arches.

Signed-off-by: Dave Hansen <dave@linux.vnet.ibm.com>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Acked-by: Chris Metcalf <cmetcalf@tilera.com> [for tile]
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 1 insertions, 11 deletions

diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 6507dabdd5dd..ffcd557f8cfd 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -27,6 +27,7 @@ config PARISC
         select MODULES_USE_ELF_RELA
         select CLONE_BACKWARDS
         select TTY # Needed for pdc_cons.c
+        select HAVE_DEBUG_STACKOVERFLOW
 
         help
           The PA-RISC microprocessor is designed by Hewlett-Packard and used
diff --git a/arch/parisc/Kconfig.debug b/arch/parisc/Kconfig.debug
index 08a332f6ee87..bc989e522a04 100644
--- a/arch/parisc/Kconfig.debug
+++ b/arch/parisc/Kconfig.debug
@@ -13,14 +13,3 @@ config DEBUG_RODATA
          If in doubt, say "N".
 
 endmenu
-
-config DEBUG_STACKOVERFLOW
-        bool "Check for stack overflows"
-        default y
-        depends on DEBUG_KERNEL
-        ---help---
-          Say Y here if you want to check the overflows of kernel, IRQ
-          and exception stacks. This option will cause messages of the
-          stacks in detail when free stack space drops below a certain
-          limit.
-          If in doubt, say "N".