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-rw-r--r--arch/ia64/mm/init.c3
-rw-r--r--arch/powerpc/mm/mem.c45
-rw-r--r--arch/sh/mm/init.c6
-rw-r--r--arch/sparc64/mm/init.c5
-rw-r--r--arch/x86/mm/init_32.c5
-rw-r--r--arch/x86/mm/init_64.c6
-rw-r--r--include/linux/memory_hotplug.h12
-rw-r--r--mm/memory_hotplug.c6
8 files changed, 10 insertions, 78 deletions
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 947ec0c7323..3e10152abbf 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -718,7 +718,7 @@ int arch_add_memory(int nid, u64 start, u64 size)
return ret;
}
-
+#ifdef CONFIG_MEMORY_HOTREMOVE
int remove_memory(u64 start, u64 size)
{
unsigned long start_pfn, end_pfn;
@@ -734,4 +734,5 @@ out:
return ret;
}
EXPORT_SYMBOL_GPL(remove_memory);
+#endif /* CONFIG_MEMORY_HOTREMOVE */
#endif
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 32dcfc9b008..81eb96ec13b 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -129,51 +129,6 @@ int __devinit arch_add_memory(int nid, u64 start, u64 size)
return __add_pages(zone, start_pfn, nr_pages);
}
-/*
- * First pass at this code will check to determine if the remove
- * request is within the RMO. Do not allow removal within the RMO.
- */
-int __devinit remove_memory(u64 start, u64 size)
-{
- struct zone *zone;
- unsigned long start_pfn, end_pfn, nr_pages;
-
- start_pfn = start >> PAGE_SHIFT;
- nr_pages = size >> PAGE_SHIFT;
- end_pfn = start_pfn + nr_pages;
-
- printk("%s(): Attempting to remove memoy in range "
- "%lx to %lx\n", __func__, start, start+size);
- /*
- * check for range within RMO
- */
- zone = page_zone(pfn_to_page(start_pfn));
-
- printk("%s(): memory will be removed from "
- "the %s zone\n", __func__, zone->name);
-
- /*
- * not handling removing memory ranges that
- * overlap multiple zones yet
- */
- if (end_pfn > (zone->zone_start_pfn + zone->spanned_pages))
- goto overlap;
-
- /* make sure it is NOT in RMO */
- if ((start < lmb.rmo_size) || ((start+size) < lmb.rmo_size)) {
- printk("%s(): range to be removed must NOT be in RMO!\n",
- __func__);
- goto in_rmo;
- }
-
- return __remove_pages(zone, start_pfn, nr_pages);
-
-overlap:
- printk("%s(): memory range to be removed overlaps "
- "multiple zones!!!\n", __func__);
-in_rmo:
- return -1;
-}
#endif /* CONFIG_MEMORY_HOTPLUG */
void show_mem(void)
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 82b68c789a5..d5e160da64b 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -294,12 +294,6 @@ int arch_add_memory(int nid, u64 start, u64 size)
}
EXPORT_SYMBOL_GPL(arch_add_memory);
-int remove_memory(u64 start, u64 size)
-{
- return -EINVAL;
-}
-EXPORT_SYMBOL_GPL(remove_memory);
-
#ifdef CONFIG_NUMA
int memory_add_physaddr_to_nid(u64 addr)
{
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 69538d1aa0a..100c4456ed1 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -1961,9 +1961,4 @@ void online_page(struct page *page)
num_physpages++;
}
-int remove_memory(u64 start, u64 size)
-{
- return -EINVAL;
-}
-
#endif /* CONFIG_MEMORY_HOTPLUG */
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 730a5b177b1..dda4e83649a 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -735,11 +735,6 @@ int arch_add_memory(int nid, u64 start, u64 size)
return __add_pages(zone, start_pfn, nr_pages);
}
-int remove_memory(u64 start, u64 size)
-{
- return -EINVAL;
-}
-EXPORT_SYMBOL_GPL(remove_memory);
#endif
struct kmem_cache *pmd_cache;
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 7d4fc633a9c..1e3862e4106 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -474,12 +474,6 @@ error:
}
EXPORT_SYMBOL_GPL(arch_add_memory);
-int remove_memory(u64 start, u64 size)
-{
- return -EINVAL;
-}
-EXPORT_SYMBOL_GPL(remove_memory);
-
#if !defined(CONFIG_ACPI_NUMA) && defined(CONFIG_NUMA)
int memory_add_physaddr_to_nid(u64 start)
{
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index 665951ef039..8fee7a45736 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -58,10 +58,9 @@ extern int add_one_highpage(struct page *page, int pfn, int bad_ppro);
extern void online_page(struct page *page);
/* VM interface that may be used by firmware interface */
extern int online_pages(unsigned long, unsigned long);
-#ifdef CONFIG_MEMORY_HOTREMOVE
-extern int offline_pages(unsigned long, unsigned long, unsigned long);
extern void __offline_isolated_pages(unsigned long, unsigned long);
-#endif
+extern int offline_pages(unsigned long, unsigned long, unsigned long);
+
/* reasonably generic interface to expand the physical pages in a zone */
extern int __add_pages(struct zone *zone, unsigned long start_pfn,
unsigned long nr_pages);
@@ -171,13 +170,6 @@ static inline int mhp_notimplemented(const char *func)
}
#endif /* ! CONFIG_MEMORY_HOTPLUG */
-static inline int __remove_pages(struct zone *zone, unsigned long start_pfn,
- unsigned long nr_pages)
-{
- printk(KERN_WARNING "%s() called, not yet supported\n", __FUNCTION__);
- dump_stack();
- return -ENOSYS;
-}
extern int add_memory(int nid, u64 start, u64 size);
extern int arch_add_memory(int nid, u64 start, u64 size);
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index c4e1b958efd..091b9c6c252 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -555,4 +555,10 @@ failed_removal:
undo_isolate_page_range(start_pfn, end_pfn);
return ret;
}
+#else
+int remove_memory(u64 start, u64 size)
+{
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(remove_memory);
#endif /* CONFIG_MEMORY_HOTREMOVE */