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memory hotplug: make alloc_bootmem_section()

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alloc_bootmem_section() can allocate specified section's area.  This is used
for usemap to keep same section with pgdat by later patch.

Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Badari Pulavarty <pbadari@us.ibm.com>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Yasunori Goto
2008-04-28 02:13:32 -07:00
committed by Linus Torvalds
parent 9d99217a02
commit e70260aabe
2 changed files with 33 additions and 0 deletions
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include/linux/bootmem.h
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@ -101,6 +101,8 @@ extern void reserve_bootmem_node(pg_data_t *pgdat,
extern void free_bootmem_node(pg_data_t *pgdat,
unsigned long addr,
unsigned long size);
extern void *alloc_bootmem_section(unsigned long size,
unsigned long section_nr);
#ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
#define alloc_bootmem_node(pgdat, x) \