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-rw-r--r--arch/ia64/mm/init.c17
-rw-r--r--arch/powerpc/mm/mem.c17
-rw-r--r--arch/s390/mm/init.c11
-rw-r--r--mm/memory_hotplug.c12
4 files changed, 11 insertions, 46 deletions
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index f482a9098e32..054bcd9439aa 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -700,23 +700,6 @@ 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;
- unsigned long timeout = 120 * HZ;
- int ret;
- start_pfn = start >> PAGE_SHIFT;
- end_pfn = start_pfn + (size >> PAGE_SHIFT);
- ret = offline_pages(start_pfn, end_pfn, timeout);
- if (ret)
- goto out;
- /* we can free mem_map at this point */
-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 98d7bf99533a..b9e1a1da6e52 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -134,23 +134,6 @@ int arch_add_memory(int nid, u64 start, u64 size)
return __add_pages(zone, start_pfn, nr_pages);
}
-
-#ifdef CONFIG_MEMORY_HOTREMOVE
-int remove_memory(u64 start, u64 size)
-{
- unsigned long start_pfn, end_pfn;
- int ret;
-
- start_pfn = start >> PAGE_SHIFT;
- end_pfn = start_pfn + (size >> PAGE_SHIFT);
- ret = offline_pages(start_pfn, end_pfn, 120 * HZ);
- if (ret)
- goto out;
- /* Arch-specific calls go here - next patch */
-out:
- return ret;
-}
-#endif /* CONFIG_MEMORY_HOTREMOVE */
#endif /* CONFIG_MEMORY_HOTPLUG */
/*
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index 1169130a97ef..158b0d6d7046 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -189,14 +189,3 @@ int arch_add_memory(int nid, u64 start, u64 size)
return rc;
}
#endif /* CONFIG_MEMORY_HOTPLUG */
-
-#ifdef CONFIG_MEMORY_HOTREMOVE
-int remove_memory(u64 start, u64 size)
-{
- unsigned long start_pfn, end_pfn;
-
- start_pfn = PFN_DOWN(start);
- end_pfn = start_pfn + PFN_DOWN(size);
- return offline_pages(start_pfn, end_pfn, 120 * HZ);
-}
-#endif /* CONFIG_MEMORY_HOTREMOVE */
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 89fee2dcb039..c299d083d8e2 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -26,6 +26,7 @@
#include <linux/delay.h>
#include <linux/migrate.h>
#include <linux/page-isolation.h>
+#include <linux/pfn.h>
#include <asm/tlbflush.h>
@@ -849,10 +850,19 @@ failed_removal:
return ret;
}
+
+int remove_memory(u64 start, u64 size)
+{
+ unsigned long start_pfn, end_pfn;
+
+ start_pfn = PFN_DOWN(start);
+ end_pfn = start_pfn + PFN_DOWN(size);
+ return offline_pages(start_pfn, end_pfn, 120 * HZ);
+}
#else
int remove_memory(u64 start, u64 size)
{
return -EINVAL;
}
-EXPORT_SYMBOL_GPL(remove_memory);
#endif /* CONFIG_MEMORY_HOTREMOVE */
+EXPORT_SYMBOL_GPL(remove_memory);