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-rw-r--r--drivers/base/memory.c49
1 files changed, 25 insertions, 24 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index a51007b79032..14f8a6954da0 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;
@@ -217,8 +207,7 @@ int memory_isolate_notify(unsigned long val, void *v)
* The probe routines leave the pages reserved, just as the bootmem code does.
* Make sure they're still that way.
*/
-static bool pages_correctly_reserved(unsigned long start_pfn,
- unsigned long nr_pages)
+static bool pages_correctly_reserved(unsigned long start_pfn)
{
int i, j;
struct page *page;
@@ -266,7 +255,7 @@ memory_block_action(unsigned long phys_index, unsigned long action, int online_t
switch (action) {
case MEM_ONLINE:
- if (!pages_correctly_reserved(start_pfn, nr_pages))
+ if (!pages_correctly_reserved(start_pfn))
return -EBUSY;
ret = online_pages(start_pfn, nr_pages, online_type);
@@ -637,8 +626,28 @@ 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 +670,6 @@ 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 +677,7 @@ 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.