diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h
index 764f2732a82182b7738bf2c1cb2829dab7870796..d8a2ca00708231fd2f7c8d762a169d8a642ebb65 100644
--- a/arch/powerpc/include/asm/machdep.h
+++ b/arch/powerpc/include/asm/machdep.h
@@ -32,7 +32,7 @@ struct machdep_calls {
void (*iommu_save)(void);
void (*iommu_restore)(void);
#endif
-#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
+#ifdef CONFIG_MEMORY_HOTPLUG
unsigned long (*memory_block_size)(void);
#endif
#endif /* CONFIG_PPC64 */
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 1777e992b20bdb17d27432205a284bfba07899ca..6052f5d5ded343ae901ae27836ccd8e789096a5d 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -912,7 +912,7 @@ void __init setup_per_cpu_areas(void)
}
#endif
-#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
+#ifdef CONFIG_MEMORY_HOTPLUG
unsigned long memory_block_size_bytes(void)
{
if (ppc_md.memory_block_size)
diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c
index a8db3f153063946fa42e035e39d9bef9bb6e80e5..ad56a54ac9c574e913a078f9c8f2ee6bee8b9688 100644
--- a/arch/powerpc/platforms/powernv/setup.c
+++ b/arch/powerpc/platforms/powernv/setup.c
@@ -440,7 +440,7 @@ static void pnv_kexec_cpu_down(int crash_shutdown, int secondary)
}
#endif /* CONFIG_KEXEC_CORE */
-#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
+#ifdef CONFIG_MEMORY_HOTPLUG
static unsigned long pnv_memory_block_size(void)
{
/*
@@ -553,7 +553,7 @@ define_machine(powernv) {
#ifdef CONFIG_KEXEC_CORE
.kexec_cpu_down = pnv_kexec_cpu_down,
#endif
-#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
+#ifdef CONFIG_MEMORY_HOTPLUG
.memory_block_size = pnv_memory_block_size,
#endif
};
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index f79126f16258a502ccbb0a23ca7ceb4984327817..d29f6f1f7f37f122f17f01f8729fc9d1a0599664 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -1089,7 +1089,7 @@ define_machine(pseries) {
.machine_kexec = pSeries_machine_kexec,
.kexec_cpu_down = pseries_kexec_cpu_down,
#endif
-#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
+#ifdef CONFIG_MEMORY_HOTPLUG
.memory_block_size = pseries_memory_block_size,
#endif
};
diff --git a/drivers/base/Makefile b/drivers/base/Makefile
index ef8e44a7d2881c6b9937662af30c07b8e29bccfa..02f7f1358e865a2b8d8b6003c9f3edd92baf472c 100644
--- a/drivers/base/Makefile
+++ b/drivers/base/Makefile
@@ -13,7 +13,7 @@ obj-y += power/
obj-$(CONFIG_ISA_BUS_API) += isa.o
obj-y += firmware_loader/
obj-$(CONFIG_NUMA) += node.o
-obj-$(CONFIG_MEMORY_HOTPLUG_SPARSE) += memory.o
+obj-$(CONFIG_MEMORY_HOTPLUG) += memory.o
ifeq ($(CONFIG_SYSFS),y)
obj-$(CONFIG_MODULES) += module.o
endif
diff --git a/drivers/base/node.c b/drivers/base/node.c
index c56d34f8158f7c21473535c3decac896878f8f12..b5a4ba18f9f9071d8f24a210af6d5f33450ad758 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -629,7 +629,7 @@ static void node_device_release(struct device *dev)
{
struct node *node = to_node(dev);
-#if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_HUGETLBFS)
+#if defined(CONFIG_MEMORY_HOTPLUG) && defined(CONFIG_HUGETLBFS)
/*
* We schedule the work only when a memory section is
* onlined/offlined on this node. When we come here,
@@ -782,7 +782,7 @@ int unregister_cpu_under_node(unsigned int cpu, unsigned int nid)
return 0;
}
-#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
+#ifdef CONFIG_MEMORY_HOTPLUG
static int __ref get_nid_for_pfn(unsigned long pfn)
{
#ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT
@@ -958,10 +958,9 @@ static int node_memory_callback(struct notifier_block *self,
return NOTIFY_OK;
}
#endif /* CONFIG_HUGETLBFS */
-#endif /* CONFIG_MEMORY_HOTPLUG_SPARSE */
+#endif /* CONFIG_MEMORY_HOTPLUG */
-#if !defined(CONFIG_MEMORY_HOTPLUG_SPARSE) || \
- !defined(CONFIG_HUGETLBFS)
+#if !defined(CONFIG_MEMORY_HOTPLUG) || !defined(CONFIG_HUGETLBFS)
static inline int node_memory_callback(struct notifier_block *self,
unsigned long action, void *arg)
{
diff --git a/drivers/virtio/Kconfig b/drivers/virtio/Kconfig
index ce1b3f6ec325de3ca097a818be4757d3907a3def..3654def9915c596130bd840f46a52ff0159aaffc 100644
--- a/drivers/virtio/Kconfig
+++ b/drivers/virtio/Kconfig
@@ -98,7 +98,7 @@ config VIRTIO_MEM
default m
depends on X86_64
depends on VIRTIO
- depends on MEMORY_HOTPLUG_SPARSE
+ depends on MEMORY_HOTPLUG
depends on MEMORY_HOTREMOVE
depends on CONTIG_ALLOC
help
diff --git a/include/linux/memory.h b/include/linux/memory.h
index 053a530c7bdd35140d834f36e9d450f9277099d0..0328ec039c38f76fc3ffb6ae4399e461f9442ab3 100644
--- a/include/linux/memory.h
+++ b/include/linux/memory.h
@@ -110,7 +110,7 @@ struct mem_section;
#define SLAB_CALLBACK_PRI 1
#define IPC_CALLBACK_PRI 10
-#ifndef CONFIG_MEMORY_HOTPLUG_SPARSE
+#ifndef CONFIG_MEMORY_HOTPLUG
static inline void memory_dev_init(void)
{
return;
@@ -126,7 +126,14 @@ static inline int memory_notify(unsigned long val, void *v)
{
return 0;
}
-#else
+static inline int hotplug_memory_notifier(notifier_fn_t fn, int pri)
+{
+ return 0;
+}
+/* These aren't inline functions due to a GCC bug. */
+#define register_hotmemory_notifier(nb) ({ (void)(nb); 0; })
+#define unregister_hotmemory_notifier(nb) ({ (void)(nb); })
+#else /* CONFIG_MEMORY_HOTPLUG */
extern int register_memory_notifier(struct notifier_block *nb);
extern void unregister_memory_notifier(struct notifier_block *nb);
int create_memory_block_devices(unsigned long start, unsigned long size,
@@ -148,9 +155,6 @@ struct memory_group *memory_group_find_by_id(int mgid);
typedef int (*walk_memory_groups_func_t)(struct memory_group *, void *);
int walk_dynamic_memory_groups(int nid, walk_memory_groups_func_t func,
struct memory_group *excluded, void *arg);
-#endif /* CONFIG_MEMORY_HOTPLUG_SPARSE */
-
-#ifdef CONFIG_MEMORY_HOTPLUG
#define hotplug_memory_notifier(fn, pri) ({ \
static __meminitdata struct notifier_block fn##_mem_nb =\
{ .notifier_call = fn, .priority = pri };\
@@ -158,15 +162,7 @@ int walk_dynamic_memory_groups(int nid, walk_memory_groups_func_t func,
})
#define register_hotmemory_notifier(nb) register_memory_notifier(nb)
#define unregister_hotmemory_notifier(nb) unregister_memory_notifier(nb)
-#else
-static inline int hotplug_memory_notifier(notifier_fn_t fn, int pri)
-{
- return 0;
-}
-/* These aren't inline functions due to a GCC bug. */
-#define register_hotmemory_notifier(nb) ({ (void)(nb); 0; })
-#define unregister_hotmemory_notifier(nb) ({ (void)(nb); })
-#endif
+#endif /* CONFIG_MEMORY_HOTPLUG */
/*
* Kernel text modification mutex, used for code patching. Users of this lock
diff --git a/include/linux/node.h b/include/linux/node.h
index 8e5a29897936c8b37f625561755eb857ca04dac9..bb21fd631b1621110953fd4dffebc43766b5ca00 100644
--- a/include/linux/node.h
+++ b/include/linux/node.h
@@ -85,7 +85,7 @@ struct node {
struct device dev;
struct list_head access_list;
-#if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_HUGETLBFS)
+#if defined(CONFIG_MEMORY_HOTPLUG) && defined(CONFIG_HUGETLBFS)
struct work_struct node_work;
#endif
#ifdef CONFIG_HMEM_REPORTING
@@ -98,7 +98,7 @@ struct memory_block;
extern struct node *node_devices[];
typedef void (*node_registration_func_t)(struct node *);
-#if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_NUMA)
+#if defined(CONFIG_MEMORY_HOTPLUG) && defined(CONFIG_NUMA)
void link_mem_sections(int nid, unsigned long start_pfn,
unsigned long end_pfn,
enum meminit_context context);
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 2a9b6dcdac4ff8909f76724db74b290208488211..669fee1d26b832cc754c48a067ded2e4519b6265 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -877,7 +877,7 @@ config DEBUG_MEMORY_INIT
config MEMORY_NOTIFIER_ERROR_INJECT
tristate "Memory hotplug notifier error injection module"
- depends on MEMORY_HOTPLUG_SPARSE && NOTIFIER_ERROR_INJECTION
+ depends on MEMORY_HOTPLUG && NOTIFIER_ERROR_INJECTION
help
This option provides the ability to inject artificial errors to
memory hotplug notifier chain callbacks. It is controlled through
diff --git a/mm/Kconfig b/mm/Kconfig
index b2bf73c90a3892db0cdb9fe47f4d1f0f24333614..0148a9c4fa2a3a6dbb4c5399d27d944ef2400955 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -128,10 +128,6 @@ config MEMORY_HOTPLUG
depends on 64BIT || BROKEN
select NUMA_KEEP_MEMINFO if NUMA
-config MEMORY_HOTPLUG_SPARSE
- def_bool y
- depends on SPARSEMEM && MEMORY_HOTPLUG
-
config MEMORY_HOTPLUG_DEFAULT_ONLINE
bool "Online the newly added memory blocks by default"
depends on MEMORY_HOTPLUG
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index afaae370b8cd09ee24d206580202e78fd1eaee02..fc07ce7b58428dd93618a48b071f02243211d28d 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -220,7 +220,6 @@ static void release_memory_resource(struct resource *res)
kfree(res);
}
-#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
static int check_pfn_span(unsigned long pfn, unsigned long nr_pages,
const char *reason)
{
@@ -1163,7 +1162,6 @@ int __ref online_pages(unsigned long pfn, unsigned long nr_pages,
mem_hotplug_done();
return ret;
}
-#endif /* CONFIG_MEMORY_HOTPLUG_SPARSE */
static void reset_node_present_pages(pg_data_t *pgdat)
{
diff --git a/tools/testing/selftests/memory-hotplug/config b/tools/testing/selftests/memory-hotplug/config
index a7e8cd5bb265d86cca85e91adc69043e18a3c13a..1eef042a31e1a75cc56c0d70db4f67a89ce4716c 100644
--- a/tools/testing/selftests/memory-hotplug/config
+++ b/tools/testing/selftests/memory-hotplug/config
@@ -1,5 +1,4 @@
CONFIG_MEMORY_HOTPLUG=y
-CONFIG_MEMORY_HOTPLUG_SPARSE=y
CONFIG_NOTIFIER_ERROR_INJECTION=y
CONFIG_MEMORY_NOTIFIER_ERROR_INJECT=m
CONFIG_MEMORY_HOTREMOVE=y