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| author | Badari Pulavarty <pbadari@us.ibm.com> | 2008-04-28 02:12:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-28 08:58:17 -0700 |
| commit | ea01ea937dcae2caa146dea1918cccf2f16ed3c4 (patch) | |
| tree | aa3189d587dc04f75bd6a0d79d7f5a764200cd81 /include/linux | |
| parent | 2a4e2b8780c6df42b19c053243dada7fa4d311ee (diff) | |
| download | lwn-ea01ea937dcae2caa146dea1918cccf2f16ed3c4.tar.gz lwn-ea01ea937dcae2caa146dea1918cccf2f16ed3c4.zip | |
hotplug memory remove: generic __remove_pages() support
Generic helper function to remove section mappings and sysfs entries for the
section of the memory we are removing. offline_pages() correctly adjusted
zone and marked the pages reserved.
TODO: Yasunori Goto is working on patches to free up allocations from bootmem.
Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Acked-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/memory_hotplug.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index 8fee7a45736b..aca9c65f8d08 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -8,6 +8,7 @@ struct page; struct zone; struct pglist_data; +struct mem_section; #ifdef CONFIG_MEMORY_HOTPLUG /* @@ -64,9 +65,11 @@ extern int offline_pages(unsigned long, unsigned long, unsigned long); /* reasonably generic interface to expand the physical pages in a zone */ extern int __add_pages(struct zone *zone, unsigned long start_pfn, unsigned long nr_pages); +extern int __remove_pages(struct zone *zone, unsigned long start_pfn, + unsigned long nr_pages); /* - * Walk thorugh all memory which is registered as resource. + * Walk through all memory which is registered as resource. * arg is (start_pfn, nr_pages, private_arg_pointer) */ extern int walk_memory_resource(unsigned long start_pfn, @@ -176,5 +179,6 @@ extern int arch_add_memory(int nid, u64 start, u64 size); extern int remove_memory(u64 start, u64 size); extern int sparse_add_one_section(struct zone *zone, unsigned long start_pfn, int nr_pages); +extern void sparse_remove_one_section(struct zone *zone, struct mem_section *ms); #endif /* __LINUX_MEMORY_HOTPLUG_H */ |