1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2017, Jeffrey Roberson <jeff@freebsd.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _SYS_DOMAINSET_H_ 30 #define _SYS_DOMAINSET_H_ 31 32 #include <sys/_domainset.h> 33 #include <sys/bitset.h> 34 #include <sys/queue.h> 35 36 #define _NDOMAINSETBITS _BITSET_BITS 37 #define _NDOMAINSETWORDS __bitset_words(DOMAINSET_SETSIZE) 38 39 #define DOMAINSETBUFSIZ \ 40 (((2 + sizeof(long) * 2) * _NDOMAINSETWORDS) + \ 41 sizeof("::") + sizeof(__XSTRING(DOMAINSET_POLICY_MAX)) + \ 42 sizeof(__XSTRING(MAXMEMDOM))) 43 44 #define DOMAINSET_CLR(n, p) __BIT_CLR(DOMAINSET_SETSIZE, n, p) 45 #define DOMAINSET_COPY(f, t) __BIT_COPY(DOMAINSET_SETSIZE, f, t) 46 #define DOMAINSET_ISSET(n, p) __BIT_ISSET(DOMAINSET_SETSIZE, n, p) 47 #define DOMAINSET_SET(n, p) __BIT_SET(DOMAINSET_SETSIZE, n, p) 48 #define DOMAINSET_ZERO(p) __BIT_ZERO(DOMAINSET_SETSIZE, p) 49 #define DOMAINSET_FILL(p) __BIT_FILL(DOMAINSET_SETSIZE, p) 50 #define DOMAINSET_SETOF(n, p) __BIT_SETOF(DOMAINSET_SETSIZE, n, p) 51 #define DOMAINSET_EMPTY(p) __BIT_EMPTY(DOMAINSET_SETSIZE, p) 52 #define DOMAINSET_ISFULLSET(p) __BIT_ISFULLSET(DOMAINSET_SETSIZE, p) 53 #define DOMAINSET_SUBSET(p, c) __BIT_SUBSET(DOMAINSET_SETSIZE, p, c) 54 #define DOMAINSET_OVERLAP(p, c) __BIT_OVERLAP(DOMAINSET_SETSIZE, p, c) 55 #define DOMAINSET_CMP(p, c) __BIT_CMP(DOMAINSET_SETSIZE, p, c) 56 #define DOMAINSET_OR(d, s) __BIT_OR(DOMAINSET_SETSIZE, d, s) 57 #define DOMAINSET_ORNOT(d, s) __BIT_ORNOT(DOMAINSET_SETSIZE, d, s) 58 #define DOMAINSET_AND(d, s) __BIT_AND(DOMAINSET_SETSIZE, d, s) 59 #define DOMAINSET_ANDNOT(d, s) __BIT_ANDNOT(DOMAINSET_SETSIZE, d, s) 60 #define DOMAINSET_CLR_ATOMIC(n, p) __BIT_CLR_ATOMIC(DOMAINSET_SETSIZE, n, p) 61 #define DOMAINSET_SET_ATOMIC(n, p) __BIT_SET_ATOMIC(DOMAINSET_SETSIZE, n, p) 62 #define DOMAINSET_SET_ATOMIC_ACQ(n, p) \ 63 __BIT_SET_ATOMIC_ACQ(DOMAINSET_SETSIZE, n, p) 64 #define DOMAINSET_AND_ATOMIC(n, p) __BIT_AND_ATOMIC(DOMAINSET_SETSIZE, n, p) 65 #define DOMAINSET_OR_ATOMIC(d, s) __BIT_OR_ATOMIC(DOMAINSET_SETSIZE, d, s) 66 #define DOMAINSET_COPY_STORE_REL(f, t) \ 67 __BIT_COPY_STORE_REL(DOMAINSET_SETSIZE, f, t) 68 #define DOMAINSET_FFS(p) __BIT_FFS(DOMAINSET_SETSIZE, p) 69 #define DOMAINSET_FLS(p) __BIT_FLS(DOMAINSET_SETSIZE, p) 70 #define DOMAINSET_COUNT(p) ((int)__BIT_COUNT(DOMAINSET_SETSIZE, p)) 71 #define DOMAINSET_FSET __BITSET_FSET(_NDOMAINSETWORDS) 72 #define DOMAINSET_T_INITIALIZER(x) __BITSET_T_INITIALIZER(x) 73 74 #define DOMAINSET_POLICY_INVALID 0 75 #define DOMAINSET_POLICY_ROUNDROBIN 1 76 #define DOMAINSET_POLICY_FIRSTTOUCH 2 77 #define DOMAINSET_POLICY_PREFER 3 78 #define DOMAINSET_POLICY_INTERLEAVE 4 79 #define DOMAINSET_POLICY_MAX DOMAINSET_POLICY_INTERLEAVE 80 81 #ifdef _KERNEL 82 #if MAXMEMDOM < 256 83 typedef uint8_t domainid_t; 84 #else 85 typedef uint16_t domainid_t; 86 #endif 87 88 struct domainset { 89 LIST_ENTRY(domainset) ds_link; 90 domainset_t ds_mask; /* allowed domains. */ 91 uint16_t ds_policy; /* Policy type. */ 92 domainid_t ds_prefer; /* Preferred domain or -1. */ 93 domainid_t ds_cnt; /* popcnt from above. */ 94 domainid_t ds_order[MAXMEMDOM]; /* nth domain table. */ 95 }; 96 97 extern struct domainset domainset_firsttouch; 98 #define DOMAINSET_FT() (&domainset_firsttouch) 99 extern struct domainset domainset_interleave; 100 #define DOMAINSET_IL() (&domainset_interleave) 101 extern struct domainset domainset_fixed[MAXMEMDOM], domainset_prefer[MAXMEMDOM]; 102 #define DOMAINSET_FIXED(domain) (&domainset_fixed[(domain)]) 103 #define DOMAINSET_PREF(domain) (&domainset_prefer[(domain)]) 104 extern struct domainset domainset_roundrobin; 105 #define DOMAINSET_RR() (&domainset_roundrobin) 106 107 void domainset_init(void); 108 void domainset_zero(void); 109 110 /* 111 * Add a domainset to the system based on a key initializing policy, prefer, 112 * and mask. Do not create and directly use domainset structures. The 113 * returned value will not match the key pointer. 114 */ 115 struct domainset *domainset_create(const struct domainset *); 116 #ifdef _SYS_SYSCTL_H_ 117 int sysctl_handle_domainset(SYSCTL_HANDLER_ARGS); 118 #endif 119 120 #else 121 __BEGIN_DECLS 122 int cpuset_getdomain(cpulevel_t, cpuwhich_t, id_t, size_t, domainset_t *, 123 int *); 124 int cpuset_setdomain(cpulevel_t, cpuwhich_t, id_t, size_t, 125 const domainset_t *, int); 126 127 __END_DECLS 128 #endif 129 #endif /* !_SYS_DOMAINSET_H_ */ 130