diff options
Diffstat (limited to 'include/linux/nodemask.h')
| -rw-r--r-- | include/linux/nodemask.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h index 4de843d94147..16475a23efa7 100644 --- a/include/linux/nodemask.h +++ b/include/linux/nodemask.h @@ -38,6 +38,8 @@ * * int first_node(mask) Number lowest set bit, or MAX_NUMNODES * int next_node(node, mask) Next node past 'node', or MAX_NUMNODES + * int first_unset_node(mask) First node not set in mask, or + * MAX_NUMNODES. * * nodemask_t nodemask_of_node(node) Return nodemask with bit 'node' set * NODE_MASK_ALL Initializer - all bits set @@ -235,6 +237,13 @@ static inline int __next_node(int n, const nodemask_t *srcp, int nbits) m; \ }) +#define first_unset_node(mask) __first_unset_node(&(mask)) +static inline int __first_unset_node(const nodemask_t *maskp) +{ + return min_t(int,MAX_NUMNODES, + find_first_zero_bit(maskp->bits, MAX_NUMNODES)); +} + #define NODE_MASK_LAST_WORD BITMAP_LAST_WORD_MASK(MAX_NUMNODES) #if MAX_NUMNODES <= BITS_PER_LONG |