linux-kernel - [RFC v8 PATCH 14/20] memory-hotplug: move register_page_bootmem_info_node and put_page

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Date:	Tue, 28 Aug 2012 18:00:21 +0800
From:	wency@...fujitsu.com
To:	x86@...nel.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org, linux-acpi@...r.kernel.org,
	linux-s390@...r.kernel.org, linux-sh@...r.kernel.org,
	linux-ia64@...r.kernel.org, cmetcalf@...era.com,
	sparclinux@...r.kernel.org
Cc:	rientjes@...gle.com, liuj97@...il.com, len.brown@...el.com,
	benh@...nel.crashing.org, paulus@...ba.org, cl@...ux.com,
	minchan.kim@...il.com, akpm@...ux-foundation.org,
	kosaki.motohiro@...fujitsu.com, isimatu.yasuaki@...fujitsu.com,
	Wen Congyang <wency@...fujitsu.com>
Subject: [RFC v8 PATCH 14/20] memory-hotplug: move register_page_bootmem_info_node and put_page_bootmem for sparse-vmemmap

From: Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>

For implementing register_page_bootmem_info_node of sparse-vmemmap,
register_page_bootmem_info_node and put_page_bootmem are moved to
memory_hotplug.c

CC: David Rientjes <rientjes@...gle.com>
CC: Jiang Liu <liuj97@...il.com>
CC: Len Brown <len.brown@...el.com>
CC: Benjamin Herrenschmidt <benh@...nel.crashing.org>
CC: Paul Mackerras <paulus@...ba.org>
CC: Christoph Lameter <cl@...ux.com>
Cc: Minchan Kim <minchan.kim@...il.com>
CC: Andrew Morton <akpm@...ux-foundation.org>
CC: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
CC: Wen Congyang <wency@...fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
---
 include/linux/memory_hotplug.h |    9 ---------
 mm/memory_hotplug.c            |    8 ++++++--
 2 files changed, 6 insertions(+), 11 deletions(-)

diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index cdbbd79..1133e63 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -162,17 +162,8 @@ static inline void arch_refresh_nodedata(int nid, pg_data_t *pgdat)
 #endif /* CONFIG_NUMA */
 #endif /* CONFIG_HAVE_ARCH_NODEDATA_EXTENSION */
 
-#ifdef CONFIG_SPARSEMEM_VMEMMAP
-static inline void register_page_bootmem_info_node(struct pglist_data *pgdat)
-{
-}
-static inline void put_page_bootmem(struct page *page)
-{
-}
-#else
 extern void register_page_bootmem_info_node(struct pglist_data *pgdat);
 extern void put_page_bootmem(struct page *page);
-#endif
 
 /*
  * Lock for memory hotplug guarantees 1) all callbacks for memory hotplug
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index d85af6d..3ca66bc 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -91,7 +91,6 @@ static void release_memory_resource(struct resource *res)
 }
 
 #ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
-#ifndef CONFIG_SPARSEMEM_VMEMMAP
 static void get_page_bootmem(unsigned long info,  struct page *page,
 			     unsigned long type)
 {
@@ -127,6 +126,7 @@ void __ref put_page_bootmem(struct page *page)
 
 }
 
+#ifndef CONFIG_SPARSEMEM_VMEMMAP
 static void register_page_bootmem_info_section(unsigned long start_pfn)
 {
 	unsigned long *usemap, mapsize, section_nr, i;
@@ -163,6 +163,11 @@ static void register_page_bootmem_info_section(unsigned long start_pfn)
 		get_page_bootmem(section_nr, page, MIX_SECTION_INFO);
 
 }
+#else
+static inline void register_page_bootmem_info_section(unsigned long start_pfn)
+{
+}
+#endif
 
 void register_page_bootmem_info_node(struct pglist_data *pgdat)
 {
@@ -198,7 +203,6 @@ void register_page_bootmem_info_node(struct pglist_data *pgdat)
 		register_page_bootmem_info_section(pfn);
 
 }
-#endif /* !CONFIG_SPARSEMEM_VMEMMAP */
 
 static void grow_zone_span(struct zone *zone, unsigned long start_pfn,
 			   unsigned long end_pfn)
-- 
1.7.1

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