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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-27 17:46:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-27 17:46:47 -0700 |
| commit | 9dda696f0de87a2e5cfabb147e28c76b7d3c6846 (patch) | |
| tree | 862a9fa39ce2d33156b815e1f7352038287579bf /arch/ia64/mm/numa.c | |
| parent | c5617b200ac52e35f7e8cf05a17b0a2d50f6b3e9 (diff) | |
| parent | 4ec37de89d8c758ee8115e0e64b3f994910789ee (diff) | |
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
[IA64] Fix build breakage
Diffstat (limited to 'arch/ia64/mm/numa.c')
| -rw-r--r-- | arch/ia64/mm/numa.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/ia64/mm/numa.c b/arch/ia64/mm/numa.c index 3efea7d0a35..2437718bd6b 100644 --- a/arch/ia64/mm/numa.c +++ b/arch/ia64/mm/numa.c @@ -17,6 +17,7 @@ #include <linux/init.h> #include <linux/bootmem.h> #include <linux/module.h> +#include <linux/random.h> #include <asm/mmzone.h> #include <asm/numa.h> @@ -50,6 +51,22 @@ paddr_to_nid(unsigned long paddr) return (i < num_node_memblks) ? node_memblk[i].nid : (num_node_memblks ? -1 : 0); } +/* + * Return the bit number of a random bit set in the nodemask. + * (returns -1 if nodemask is empty) + */ +int __node_random(const nodemask_t *maskp) +{ + int w, bit = -1; + + w = nodes_weight(*maskp); + if (w) + bit = bitmap_ord_to_pos(maskp->bits, + get_random_int() % w, MAX_NUMNODES); + return bit; +} +EXPORT_SYMBOL(__node_random); + #if defined(CONFIG_SPARSEMEM) && defined(CONFIG_NUMA) /* * Because of holes evaluate on section limits. |