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-rw-r--r--arch/sh/mm/init.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index b75a7acd62fb..d4681a55c852 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -292,4 +292,21 @@ int memory_add_physaddr_to_nid(u64 addr)
}
EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
#endif
+
+#ifdef CONFIG_MEMORY_HOTREMOVE
+int remove_memory(u64 start, u64 size)
+{
+ unsigned long start_pfn = start >> PAGE_SHIFT;
+ unsigned long end_pfn = start_pfn + (size >> PAGE_SHIFT);
+ int ret;
+
+ ret = offline_pages(start_pfn, end_pfn, 120 * HZ);
+ if (unlikely(ret))
+ printk("%s: Failed, offline_pages() == %d\n", __func__, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(remove_memory);
#endif
+
+#endif /* CONFIG_MEMORY_HOTPLUG */
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