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memory-hotplug: remove memmap of sparse-vmemmap

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Introduce a new API vmemmap_free() to free and remove vmemmap
pagetables.  Since pagetable implements are different, each architecture
has to provide its own version of vmemmap_free(), just like
vmemmap_populate().

Note: vmemmap_free() is not implemented for ia64, ppc, s390, and sparc.

[[email protected]: fix implicit declaration of remove_pagetable]
Signed-off-by: Yasuaki Ishimatsu <[email protected]>
Signed-off-by: Jianguo Wu <[email protected]>
Signed-off-by: Wen Congyang <[email protected]>
Signed-off-by: Tang Chen <[email protected]>
Cc: KOSAKI Motohiro <[email protected]>
Cc: Jiang Liu <[email protected]>
Cc: Kamezawa Hiroyuki <[email protected]>
Cc: Lai Jiangshan <[email protected]>
Cc: Wu Jianguo <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Signed-off-by: Michal Hocko <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Tang Chen 2013-02-22 16:33:08 -08:00 • committed by Linus Torvalds
commit 0197518cd3
8 changed files with 31 additions and 1 deletions
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3
mm/sparse.c
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@ -615,10 +615,11 @@ static inline struct page *kmalloc_section_memmap(unsigned long pnum, int nid,
}
static void __kfree_section_memmap(struct page *memmap, unsigned long nr_pages)
{
return; /* XXX: Not implemented yet */
vmemmap_free(memmap, nr_pages);
}
static void free_map_bootmem(struct page *memmap, unsigned long nr_pages)
{
vmemmap_free(memmap, nr_pages);
}
#else
static struct page *__kmalloc_section_memmap(unsigned long nr_pages)