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| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2006-06-27 13:53:36 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-28 04:32:36 +0400 |
| commit | 2842f11419704f8707fffc82e10d2263427fc130 (patch) | |
| tree | 9bc86163ba7b2fa842b3aff2f087be6419f246bb /include/linux/ioport.h | |
| parent | 0a54703904a4a206686b4e8c3f5a6927b60747aa (diff) | |
| download | linux-2842f11419704f8707fffc82e10d2263427fc130.tar.xz | |
[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.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/ioport.h b/include/linux/ioport.h index cd6bd001ba4e..edfc733b1575 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)) |