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authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>2006-06-27 02:53:36 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-27 17:32:36 -0700
commit2842f11419704f8707fffc82e10d2263427fc130 (patch)
tree9bc86163ba7b2fa842b3aff2f087be6419f246bb /include/linux/ioport.h
parent0a54703904a4a206686b4e8c3f5a6927b60747aa (diff)
downloadop-kernel-dev-2842f11419704f8707fffc82e10d2263427fc130.zip
op-kernel-dev-2842f11419704f8707fffc82e10d2263427fc130.tar.gz
[PATCH] catch valid mem range at onlining memory
This patch allows hot-add memory which is not aligned to section. Now, hot-added memory has to be aligned to section size. Considering big section sized archs, this is not useful. When hot-added memory is registerd as iomem resoruce by iomem resource patch, we can make use of that information to detect valid memory range. Note: With this, not-aligned memory can be registerd. To allow hot-add memory with holes, we have to do more work around add_memory(). (It doesn't allows add memory to already existing mem section.) Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/ioport.h')
-rw-r--r--include/linux/ioport.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index cd6bd00..edfc733 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h
@@ -105,6 +105,9 @@ extern int allocate_resource(struct resource *root, struct resource *new,
int adjust_resource(struct resource *res, unsigned long start,
unsigned long size);
+/* get registered SYSTEM_RAM resources in specified area */
+extern int find_next_system_ram(struct resource *res);
+
/* Convenience shorthand with allocation */
#define request_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name))
#define request_mem_region(start,n,name) __request_region(&iomem_resource, (start), (n), (name))
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