// SPDX-License-Identifier: GPL-2.0
  #include <linux/nodemask.h>
  #include <linux/module.h>
  #include <linux/random.h>
  
  int __next_node_in(int node, const nodemask_t *srcp)
  {
  	int ret = __next_node(node, srcp);
  
  	if (ret == MAX_NUMNODES)
  		ret = __first_node(srcp);
  	return ret;
  }
  EXPORT_SYMBOL(__next_node_in);
  
  #ifdef CONFIG_NUMA
  /*
   * Return the bit number of a random bit set in the nodemask.
   * (returns NUMA_NO_NODE if nodemask is empty)
   */
  int node_random(const nodemask_t *maskp)
  {
  	int w, bit = NUMA_NO_NODE;
  
  	w = nodes_weight(*maskp);
  	if (w)
  		bit = bitmap_ord_to_pos(maskp->bits,
  			get_random_int() % w, MAX_NUMNODES);
  	return bit;
  }
  #endif