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Diffstat (limited to 'drivers/base/memory.c')
-rw-r--r--drivers/base/memory.c44
1 files changed, 23 insertions, 21 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index a51007b79032..65d9799cbb61 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -93,16 +93,6 @@ int register_memory(struct memory_block *memory)
return error;
}
-static void
-unregister_memory(struct memory_block *memory)
-{
- BUG_ON(memory->dev.bus != &memory_subsys);
-
- /* drop the ref. we got in remove_memory_block() */
- kobject_put(&memory->dev.kobj);
- device_unregister(&memory->dev);
-}
-
unsigned long __weak memory_block_size_bytes(void)
{
return MIN_MEMORY_BLOCK_SIZE;
@@ -637,8 +627,28 @@ static int add_memory_section(int nid, struct mem_section *section,
return ret;
}
-int remove_memory_block(unsigned long node_id, struct mem_section *section,
- int phys_device)
+/*
+ * need an interface for the VM to add new memory regions,
+ * but without onlining it.
+ */
+int register_new_memory(int nid, struct mem_section *section)
+{
+ return add_memory_section(nid, section, NULL, MEM_OFFLINE, HOTPLUG);
+}
+
+#ifdef CONFIG_MEMORY_HOTREMOVE
+static void
+unregister_memory(struct memory_block *memory)
+{
+ BUG_ON(memory->dev.bus != &memory_subsys);
+
+ /* drop the ref. we got in remove_memory_block() */
+ kobject_put(&memory->dev.kobj);
+ device_unregister(&memory->dev);
+}
+
+static int remove_memory_block(unsigned long node_id,
+ struct mem_section *section, int phys_device)
{
struct memory_block *mem;
@@ -661,15 +671,6 @@ int remove_memory_block(unsigned long node_id, struct mem_section *section,
return 0;
}
-/*
- * need an interface for the VM to add new memory regions,
- * but without onlining it.
- */
-int register_new_memory(int nid, struct mem_section *section)
-{
- return add_memory_section(nid, section, NULL, MEM_OFFLINE, HOTPLUG);
-}
-
int unregister_memory_section(struct mem_section *section)
{
if (!present_section(section))
@@ -677,6 +678,7 @@ int unregister_memory_section(struct mem_section *section)
return remove_memory_block(0, section, 0);
}
+#endif /* CONFIG_MEMORY_HOTREMOVE */
/*
* offline one memory block. If the memory block has been offlined, do nothing.