[POWERPC] arch_add_memory() cannot be __devinit

[linux-2.6-omap-h63xx.git] / arch / powerpc / mm / mem.c

diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 93a5c53e3423fe7c5663b411cfe53cd82da73ad9..1b119b92a82697b3aef48ae3705137f1dbd3790e 100644 (file)
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -31,6 +31,7 @@
 #include <linux/initrd.h>
 #include <linux/pagemap.h>
 #include <linux/suspend.h>
+#include <linux/lmb.h>
 
 #include <asm/pgalloc.h>
 #include <asm/prom.h>
@@ -42,7 +43,6 @@
 #include <asm/machdep.h>
 #include <asm/btext.h>
 #include <asm/tlb.h>
-#include <asm/lmb.h>
 #include <asm/sections.h>
 #include <asm/vdso.h>
 
@@ -111,7 +111,7 @@ int memory_add_physaddr_to_nid(u64 start)
 }
 #endif
 
-int __devinit arch_add_memory(int nid, u64 start, u64 size)
+int arch_add_memory(int nid, u64 start, u64 size)
 {
        struct pglist_data *pgdata;
        struct zone *zone;
@@ -129,6 +129,39 @@ int __devinit 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 */
+
+/*
+ * walk_memory_resource() needs to make sure there is no holes in a given
+ * memory range. On PPC64, since this range comes from /sysfs, the range
+ * is guaranteed to be valid, non-overlapping and can not contain any
+ * holes. By the time we get here (memory add or remove), /proc/device-tree
+ * is updated and correct. Only reason we need to check against device-tree
+ * would be if we allow user-land to specify a memory range through a
+ * system call/ioctl etc. instead of doing offline/online through /sysfs.
+ */
+int
+walk_memory_resource(unsigned long start_pfn, unsigned long nr_pages, void *arg,
+                       int (*func)(unsigned long, unsigned long, void *))
+{
+       return  (*func)(start_pfn, nr_pages, arg);
+}
+
 #endif /* CONFIG_MEMORY_HOTPLUG */
 
 void show_mem(void)