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Signed-off-by: Andrea Righi --- include/linux/nodemask.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h index b61438313a73..7ba35c65ab99 100644 --- a/include/linux/nodemask.h +++ b/include/linux/nodemask.h @@ -392,6 +392,16 @@ static inline void __nodes_fold(nodemask_t *dstp, const nodemask_t *origp, for ((node) = 0; (node) < 1 && !nodes_empty(mask); (node)++) #endif /* MAX_NUMNODES */ +#if MAX_NUMNODES > 1 +#define for_each_node_mask_wrap(node, mask, start) \ + for_each_set_bit_wrap((node), (mask).bits, MAX_NUMNODES, (start)) +#else /* MAX_NUMNODES == 1 */ +#define for_each_node_mask_wrap(node, mask, start) \ + for ((node) = 0; \ + (node) < 1 && !nodes_empty(mask); \ + (node)++, (void)(start)) +#endif /* MAX_NUMNODES */ + /* * Bitmasks that are kept for all the nodes. */ @@ -441,6 +451,9 @@ static inline int num_node_state(enum node_states state) #define for_each_node_state(__node, __state) \ for_each_node_mask((__node), node_states[__state]) +#define for_each_node_state_wrap(__node, __state, __start) \ + for_each_node_mask_wrap((__node), node_states[__state], __start) + #define first_online_node first_node(node_states[N_ONLINE]) #define first_memory_node first_node(node_states[N_MEMORY]) static inline unsigned int next_online_node(int nid) @@ -535,6 +548,7 @@ static inline int node_random(const nodemask_t *maskp) #define for_each_node(node) for_each_node_state(node, N_POSSIBLE) #define for_each_online_node(node) for_each_node_state(node, N_ONLINE) +#define for_each_online_node_wrap(node, start) for_each_node_state(node, N_ONLINE, start) /* * For nodemask scratch area. -- 2.47.1