[RFC PATCH v2 9/13] memory-hotplug : move register_page_bootmem_info_node and put_page_bootmem for sparse-vmemmap

Yasuaki Ishimatsu
2012-07-03T06:02:42Z

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@google.com>
CC: Jiang Liu <liuj97@gmail.com>
CC: Len Brown <len.brown@intel.com>
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: Paul Mackerras <paulus@samba.org>
CC: Christoph Lameter <cl@linux.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>

---
include/linux/memory_hotplug.h | 9 ---------
mm/memory_hotplug.c | 8 ++++++--
2 files changed, 6 insertions(+), 11 deletions(-)

Index: linux-3.5-rc4/include/linux/memory_hotplug.h
===================================================================
--- linux-3.5-rc4.orig/include/linux/memory_hotplug.h 2012-07-03 14:22:10.170116406 +0900
+++ linux-3.5-rc4/include/linux/memory_hotplug.h 2012-07-03 14:22:14.409063086 +0900
@@ -160,17 +160,8 @@ static inline void arch_refresh_nodedata
#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
Index: linux-3.5-rc4/mm/memory_hotplug.c
===================================================================
--- linux-3.5-rc4.orig/mm/memory_hotplug.c 2012-07-03 14:22:12.299089413 +0900
+++ linux-3.5-rc4/mm/memory_hotplug.c 2012-07-03 14:22:14.419062959 +0900
@@ -91,7 +91,6 @@ static void release_memory_resource(stru
}

#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

}

+#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_s
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(str
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)