linux_domain.c

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    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/cdefs.h>
   28 __FBSDID("$FreeBSD$");
   29 
   30 #include <sys/param.h>
   31 #include <sys/systm.h>
   32 #include <sys/domainset.h>
   33 #include <sys/bus.h>
   34 
   35 #include <linux/compat.h>
   36 #include <linux/device.h>
   37 
   38 struct domainset *
   39 linux_get_vm_domain_set(int node)
   40 {
   41         KASSERT(node < MAXMEMDOM, ("Invalid VM domain %d", node));
   42 
   43         if (node < 0)
   44                 return (DOMAINSET_RR());
   45         else
   46                 return (DOMAINSET_PREF(node));
   47 }
   48 
   49 int
   50 linux_dev_to_node(struct device *dev)
   51 {
   52         int numa_domain;
   53 
   54         if (dev == NULL || dev->bsddev == NULL ||
   55             bus_get_domain(dev->bsddev, &numa_domain) != 0)
   56                 return (-1);
   57         else
   58                 return (numa_domain);
   59 }

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FreeBSD/Linux Kernel Cross Reference sys/compat/linuxkpi/common/src/linux_domain.c

FreeBSD/Linux Kernel Cross Reference
sys/compat/linuxkpi/common/src/linux_domain.c