linux-kernel - [RFC PATCH 3/3] Change DEBUG_PAGEALLOC dependency on ARCH_SUPPORTS_DEBUG

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Message-ID: <20100608162609.21870.13212.stgit@e102109-lin.cambridge.arm.com>
Date:	Tue, 08 Jun 2010 17:26:09 +0100
From:	Catalin Marinas <catalin.marinas@....com>
To:	linux-kernel@...r.kernel.org
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Akinobu Mita <akinobu.mita@...il.com>
Subject: [RFC PATCH 3/3] Change DEBUG_PAGEALLOC dependency on
 ARCH_SUPPORTS_DEBUG_PAGEALLOC

DEBUG_PAGEALLOC currently depends on ARCH_SUPPORTS_DEBUG_PAGEALLOC.
However, it is selected by PAGE_POISONING which depends on
!ARCH_SUPPORTS_DEBUG_PAGEALLOC.

This patch changes the DEBUG_PAGEALLOC entry so that the dependency is
moved to the definition line rather than having an explicit "depends on"
line.

Signed-off-by: Catalin Marinas <catalin.marinas@....com>
Cc: Akinobu Mita <akinobu.mita@...il.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
---
 mm/Kconfig.debug |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug
index af7cfb4..983375d 100644
--- a/mm/Kconfig.debug
+++ b/mm/Kconfig.debug
@@ -1,6 +1,6 @@
 config DEBUG_PAGEALLOC
-	bool "Debug page memory allocations"
-	depends on DEBUG_KERNEL && ARCH_SUPPORTS_DEBUG_PAGEALLOC
+	bool "Debug page memory allocations" if ARCH_SUPPORTS_DEBUG_PAGEALLOC
+	depends on DEBUG_KERNEL
 	depends on !HIBERNATION || !PPC && !SPARC
 	depends on !KMEMCHECK
 	---help---

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