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