[PATCH] hot-add-mem x86_64: use CONFIG_MEMORY_HOTPLUG_SPARSE

Migate CONFIG_MEMORY_HOTPLUG to CONFIG_MEMORY_HOTPLUG_SPARSE where needed.

Signed-off-by: Keith Mannthey <kmannth@us.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

3 files changed, 5 insertions, 3 deletions

diff --git a/drivers/base/Makefile b/drivers/base/Makefile
index b539e5e75b56..7bbb9eeda235 100644
--- a/drivers/base/Makefile
+++ b/drivers/base/Makefile
@@ -8,7 +8,7 @@ obj-y			+= power/
 obj-$(CONFIG_ISA)       += isa.o
 obj-$(CONFIG_FW_LOADER) += firmware_class.o
 obj-$(CONFIG_NUMA)      += node.o
-obj-$(CONFIG_MEMORY_HOTPLUG) += memory.o
+obj-$(CONFIG_MEMORY_HOTPLUG_SPARSE) += memory.o
 obj-$(CONFIG_SMP)       += topology.o
 obj-$(CONFIG_SYS_HYPERVISOR) += hypervisor.o
 
diff --git a/include/linux/memory.h b/include/linux/memory.h
index 8f04143ca363..654ef5544878 100644
--- a/include/linux/memory.h
+++ b/include/linux/memory.h
@@ -57,7 +57,7 @@ struct memory_block {
 struct notifier_block;
 struct mem_section;
 
-#ifndef CONFIG_MEMORY_HOTPLUG
+#ifndef CONFIG_MEMORY_HOTPLUG_SPARSE
 static inline int memory_dev_init(void)
 {
         return 0;
@@ -78,7 +78,7 @@ extern int remove_memory_block(unsigned long, struct mem_section *, int);
 #define CONFIG_MEM_BLOCK_SIZE   (PAGES_PER_SECTION<<PAGE_SHIFT)
 
 
-#endif /* CONFIG_MEMORY_HOTPLUG */
+#endif /* CONFIG_MEMORY_HOTPLUG_SPARSE */
 
 #define hotplug_memory_notifier(fn, pri) {                      \
         static struct notifier_block fn##_mem_nb =              \
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 63b14d4f68fb..7666dbd328df 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -26,6 +26,7 @@
 
 #include <asm/tlbflush.h>
 
+#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
 static int __add_zone(struct zone *zone, unsigned long phys_start_pfn)
 {
         struct pglist_data *pgdat = zone->zone_pgdat;
@@ -192,6 +193,7 @@ int online_pages(unsigned long pfn, unsigned long nr_pages)
         writeback_set_ratelimit();
         return 0;
 }
+#endif /* CONFIG_MEMORY_HOTPLUG_SPARSE */
 
 static pg_data_t *hotadd_new_pgdat(int nid, u64 start)
 {