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authorJan Beulich <JBeulich@novell.com>2009-09-22 04:03:07 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-22 18:17:38 +0400
commit2c85f51d222ccdd8c401d77a36b723a89156810d (patch)
treefb94c6ea243504043e434f0a7d26cfd4831b33a9 /include/linux/bootmem.h
parent3c1596efe167322dae87f8390d36f91ce2d7f936 (diff)
downloadlinux-2c85f51d222ccdd8c401d77a36b723a89156810d.tar.xz
mm: also use alloc_large_system_hash() for the PID hash table
This is being done by allowing boot time allocations to specify that they may want a sub-page sized amount of memory. Overall this seems more consistent with the other hash table allocations, and allows making two supposedly mm-only variables really mm-only (nr_{kernel,all}_pages). Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/bootmem.h')
-rw-r--r--include/linux/bootmem.h5
1 files changed, 2 insertions, 3 deletions
diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
index bc3ab7073695..dd97fb8408a8 100644
--- a/include/linux/bootmem.h
+++ b/include/linux/bootmem.h
@@ -132,9 +132,6 @@ static inline void *alloc_remap(int nid, unsigned long size)
}
#endif /* CONFIG_HAVE_ARCH_ALLOC_REMAP */
-extern unsigned long __meminitdata nr_kernel_pages;
-extern unsigned long __meminitdata nr_all_pages;
-
extern void *alloc_large_system_hash(const char *tablename,
unsigned long bucketsize,
unsigned long numentries,
@@ -145,6 +142,8 @@ extern void *alloc_large_system_hash(const char *tablename,
unsigned long limit);
#define HASH_EARLY 0x00000001 /* Allocating during early boot? */
+#define HASH_SMALL 0x00000002 /* sub-page allocation allowed, min
+ * shift passed via *_hash_shift */
/* Only NUMA needs hash distribution. 64bit NUMA architectures have
* sufficient vmalloc space.