linux-kernel - [PATCH 7/8] early_res: prepare for other platform to use it

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Message-Id: <1269426861-20903-8-git-send-email-yinghai@kernel.org>
Date:	Wed, 24 Mar 2010 03:34:20 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Miller <davem@...emloft.net>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	Yinghai Lu <yinghai@...nel.org>
Subject: [PATCH 7/8] early_res: prepare for other platform to use it

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

add weak reserver_bootmem_generic()

also clean up x86 64 bit one.

add include for linux/early_res.h

Signed-off-by: Yinghai Lu <yinghai@...nel.org>
---
 arch/x86/mm/init_32.c |    5 -----
 arch/x86/mm/init_64.c |   18 ------------------
 mm/bootmem.c          |    7 +++++++
 mm/page_alloc.c       |    1 +
 4 files changed, 8 insertions(+), 23 deletions(-)

diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index a7625d5..16001e1 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -1070,8 +1070,3 @@ void mark_rodata_ro(void)
 }
 #endif
 
-int __init reserve_bootmem_generic(unsigned long phys, unsigned long len,
-				   int flags)
-{
-	return reserve_bootmem(phys, len, flags);
-}
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index dd88ef9..cc3627b 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -801,10 +801,6 @@ void mark_rodata_ro(void)
 int __init reserve_bootmem_generic(unsigned long phys, unsigned long len,
 				   int flags)
 {
-#ifdef CONFIG_NUMA
-	int nid, next_nid;
-	int ret;
-#endif
 	unsigned long pfn = phys >> PAGE_SHIFT;
 
 	if (pfn >= max_pfn) {
@@ -820,21 +816,7 @@ int __init reserve_bootmem_generic(unsigned long phys, unsigned long len,
 		return -EFAULT;
 	}
 
-	/* Should check here against the e820 map to avoid double free */
-#ifdef CONFIG_NUMA
-	nid = phys_to_nid(phys);
-	next_nid = phys_to_nid(phys + len - 1);
-	if (nid == next_nid)
-		ret = reserve_bootmem_node(NODE_DATA(nid), phys, len, flags);
-	else
-		ret = reserve_bootmem(phys, len, flags);
-
-	if (ret != 0)
-		return ret;
-
-#else
 	reserve_bootmem(phys, len, flags);
-#endif
 
 	if (phys+len <= MAX_DMA_PFN*PAGE_SIZE) {
 		dma_reserve += len / PAGE_SIZE;
diff --git a/mm/bootmem.c b/mm/bootmem.c
index d7c791e..760c279 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -14,6 +14,7 @@
 #include <linux/module.h>
 #include <linux/kmemleak.h>
 #include <linux/range.h>
+#include <linux/early_res.h>
 
 #include <asm/bug.h>
 #include <asm/io.h>
@@ -525,6 +526,12 @@ int __init reserve_bootmem(unsigned long addr, unsigned long size,
 }
 
 #ifndef CONFIG_NO_BOOTMEM
+int __weak __init reserve_bootmem_generic(unsigned long phys, unsigned long len,
+				   int flags)
+{
+	return reserve_bootmem(phys, len, flags);
+}
+
 static unsigned long __init align_idx(struct bootmem_data *bdata,
 				      unsigned long idx, unsigned long step)
 {
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 04c241a..e7b1d72 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -21,6 +21,7 @@
 #include <linux/pagemap.h>
 #include <linux/jiffies.h>
 #include <linux/bootmem.h>
+#include <linux/early_res.h>
 #include <linux/compiler.h>
 #include <linux/kernel.h>
 #include <linux/kmemcheck.h>
-- 
1.6.4.2

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