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Subject[tip:x86/memblock] memblock, x86: Make ARCH_DISCARD_MEMBLOCK a config option
Commit-ID:  c378ddd53f9b8832a46fd4fec050a97fc2269858
Gitweb: http://git.kernel.org/tip/c378ddd53f9b8832a46fd4fec050a97fc2269858
Author: Tejun Heo <tj@kernel.org>
AuthorDate: Thu, 14 Jul 2011 11:46:03 +0200
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Thu, 14 Jul 2011 11:47:52 -0700

memblock, x86: Make ARCH_DISCARD_MEMBLOCK a config option

From 6839454ae63f1eb21e515c10229ca95c22955fec Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Thu, 14 Jul 2011 11:22:17 +0200

Make ARCH_DISCARD_MEMBLOCK a config option so that it can be handled
together with other MEMBLOCK options.

Signed-off-by: Tejun Heo <tj@kernel.org>
Link: http://lkml.kernel.org/r/20110714094603.GH3455@htj.dyndns.org
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
arch/x86/Kconfig | 1 +
arch/x86/include/asm/memblock.h | 2 --
include/linux/memblock.h | 2 +-
mm/Kconfig | 3 +++
mm/memblock.c | 2 +-
5 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 97f0894..28116d4 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -26,6 +26,7 @@ config X86
select HAVE_KPROBES
select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
+ select ARCH_DISCARD_MEMBLOCK
select ARCH_WANT_OPTIONAL_GPIOLIB
select ARCH_WANT_FRAME_POINTERS
select HAVE_DMA_ATTRS
diff --git a/arch/x86/include/asm/memblock.h b/arch/x86/include/asm/memblock.h
index 17a882e..bc56670 100644
--- a/arch/x86/include/asm/memblock.h
+++ b/arch/x86/include/asm/memblock.h
@@ -1,8 +1,6 @@
#ifndef _X86_MEMBLOCK_H
#define _X86_MEMBLOCK_H

-#define ARCH_DISCARD_MEMBLOCK
-
void memblock_x86_reserve_range(u64 start, u64 end, char *name);
void memblock_x86_free_range(u64 start, u64 end);

diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 31def58..2491355 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -197,7 +197,7 @@ static inline unsigned long memblock_region_reserved_end_pfn(const struct memblo
region++)


-#ifdef ARCH_DISCARD_MEMBLOCK
+#ifdef CONFIG_ARCH_DISCARD_MEMBLOCK
#define __init_memblock __meminit
#define __initdata_memblock __meminitdata
#else
diff --git a/mm/Kconfig b/mm/Kconfig
index 30a5d47..7c56971 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -134,6 +134,9 @@ config HAVE_MEMBLOCK
config HAVE_MEMBLOCK_NODE_MAP
boolean

+config ARCH_DISCARD_MEMBLOCK
+ boolean
+
# eventually, we can have this option just 'select SPARSEMEM'
config MEMORY_HOTPLUG
bool "Allow for memory hot-add"
diff --git a/mm/memblock.c b/mm/memblock.c
index c4a8750..ebc6119 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -959,7 +959,7 @@ static int __init early_memblock(char *p)
}
early_param("memblock", early_memblock);

-#if defined(CONFIG_DEBUG_FS) && !defined(ARCH_DISCARD_MEMBLOCK)
+#if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_ARCH_DISCARD_MEMBLOCK)

static int memblock_debug_show(struct seq_file *m, void *private)
{

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