1 /*-
2 * Copyright (c) 2021 NVIDIA Networking
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
10 * disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include <sys/param.h>
28 #include <sys/systm.h>
29 #include <sys/domainset.h>
30 #include <sys/bus.h>
31
32 #include <linux/compat.h>
33 #include <linux/device.h>
34
35 struct domainset *
linux_get_vm_domain_set(int node)36 linux_get_vm_domain_set(int node)
37 {
38 KASSERT(node < MAXMEMDOM, ("Invalid VM domain %d", node));
39
40 if (node < 0)
41 return (DOMAINSET_RR());
42 else
43 return (DOMAINSET_PREF(node));
44 }
45
46 int
linux_dev_to_node(struct device * dev)47 linux_dev_to_node(struct device *dev)
48 {
49 int numa_domain;
50
51 if (dev == NULL || dev->bsddev == NULL ||
52 bus_get_domain(dev->bsddev, &numa_domain) != 0)
53 return (-1);
54 else
55 return (numa_domain);
56 }
57