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authorDave Hansen <haveblue@us.ibm.com>2005-10-29 18:16:55 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-10-29 21:40:44 -0700
commit0b0acbec1bed75ec1e1daa7f7006323a2a2b2844 (patch)
treee0d54fbaa6b8b0955ed881af8956b4085039b2d1 /mm/memory_hotplug.c
parent3947be1969a9ce455ec30f60ef51efb10e4323d1 (diff)
downloadlinux-0b0acbec1bed75ec1e1daa7f7006323a2a2b2844.tar.bz2
[PATCH] memory hotplug: move section_mem_map alloc to sparse.c
This basically keeps up from having to extern __kmalloc_section_memmap(). The vaddr_in_vmalloc_area() helper could go in a vmalloc header, but that header gets hard to work with, because it needs some arch-specific macros. Just stick it in here for now, instead of creating another header. Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Lion Vollnhals <webmaster@schiggl.de> Signed-off-by: Jiri Slaby <xslaby@fi.muni.cz> Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/memory_hotplug.c')
-rw-r--r--mm/memory_hotplug.c48
1 files changed, 3 insertions, 45 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 855e0fc928b3..2e916c308ae6 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -24,28 +24,6 @@
#include <asm/tlbflush.h>
-static struct page *__kmalloc_section_memmap(unsigned long nr_pages)
-{
- struct page *page, *ret;
- unsigned long memmap_size = sizeof(struct page) * nr_pages;
-
- page = alloc_pages(GFP_KERNEL, get_order(memmap_size));
- if (page)
- goto got_map_page;
-
- ret = vmalloc(memmap_size);
- if (ret)
- goto got_map_ptr;
-
- return NULL;
-got_map_page:
- ret = (struct page *)pfn_to_kaddr(page_to_pfn(page));
-got_map_ptr:
- memset(ret, 0, memmap_size);
-
- return ret;
-}
-
extern void zonetable_add(struct zone *zone, int nid, int zid, unsigned long pfn,
unsigned long size);
static void __add_zone(struct zone *zone, unsigned long phys_start_pfn)
@@ -60,35 +38,15 @@ static void __add_zone(struct zone *zone, unsigned long phys_start_pfn)
zonetable_add(zone, nid, zone_type, phys_start_pfn, nr_pages);
}
-extern int sparse_add_one_section(struct zone *, unsigned long,
- struct page *mem_map);
+extern int sparse_add_one_section(struct zone *zone, unsigned long start_pfn,
+ int nr_pages);
static int __add_section(struct zone *zone, unsigned long phys_start_pfn)
{
struct pglist_data *pgdat = zone->zone_pgdat;
int nr_pages = PAGES_PER_SECTION;
- struct page *memmap;
int ret;
- /*
- * This can potentially allocate memory, and does its own
- * internal locking.
- */
- sparse_index_init(pfn_to_section_nr(phys_start_pfn), pgdat->node_id);
-
- pgdat_resize_lock(pgdat, &flags);
- memmap = __kmalloc_section_memmap(nr_pages);
- ret = sparse_add_one_section(zone, phys_start_pfn, memmap);
- pgdat_resize_unlock(pgdat, &flags);
-
- if (ret <= 0) {
- /* the mem_map didn't get used */
- if (memmap >= (struct page *)VMALLOC_START &&
- memmap < (struct page *)VMALLOC_END)
- vfree(memmap);
- else
- free_pages((unsigned long)memmap,
- get_order(sizeof(struct page) * nr_pages));
- }
+ ret = sparse_add_one_section(zone, phys_start_pfn, nr_pages);
if (ret < 0)
return ret;