linux-kernel - [PATCH 37/43] memblock: Expose some memblock bits for use by x86

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Date:	Fri,  6 Aug 2010 15:15:18 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	linux-kernel@...r.kernel.org
Cc:	linux-mm@...ck.org, torvalds@...ux-foundation.org,
	Yinghai Lu <yinghai@...nel.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: [PATCH 37/43] memblock: Expose some memblock bits for use by x86

From: Yinghai Lu <yinghai@...nel.org>

This exposes memblock_debug and associated memblock_dbg() macro,
along with memblock_can_resize so that x86 can use these when
ported to use memblock

Signed-off-by: Yinghai Lu <yinghai@...nel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@...nel.crashing.org>
---
 include/linux/memblock.h |    5 +++++
 mm/memblock.c            |    3 ++-
 2 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index c8da03e..eed0f9b 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -39,6 +39,11 @@ struct memblock {
 };
 
 extern struct memblock memblock;
+extern int memblock_debug;
+extern int memblock_can_resize;
+
+#define memblock_dbg(fmt, ...) \
+	if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
 
 extern void __init memblock_init(void);
 extern void __init memblock_analyze(void);
diff --git a/mm/memblock.c b/mm/memblock.c
index cc15be2..5499ab1 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -22,7 +22,8 @@
 
 struct memblock memblock;
 
-static int memblock_debug, memblock_can_resize;
+int memblock_debug;
+int memblock_can_resize;
 static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS + 1];
 static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS + 1];
 
-- 
1.7.0.4

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