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authorTang Chen <tangchen@cn.fujitsu.com>2013-02-22 16:33:08 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-23 17:50:12 -0800
commit0197518cd3672029618a16a57597946a094ac7a8 (patch)
tree64785feea48812285b31d690a167c3c488c8017a /mm/sparse.c
parentbbcab8789d4a5b942773aa7496794ceebe2d3f78 (diff)
downloadlinux-0197518cd3672029618a16a57597946a094ac7a8.tar.gz
memory-hotplug: remove memmap of sparse-vmemmap
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. [mhocko@suse.cz: fix implicit declaration of remove_pagetable] Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Jianguo Wu <wujianguo@huawei.com> Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Jiang Liu <jiang.liu@huawei.com> Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Wu Jianguo <wujianguo@huawei.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Michal Hocko <mhocko@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/sparse.c')
-rw-r--r--mm/sparse.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/sparse.c b/mm/sparse.c
index 66f0fd9d796..46f6ea47d9a 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -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)