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 * 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 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