1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 * $FreeBSD$ 29 */ 30 31#ifndef _SYS_DOMAINSET_H_ 32#define _SYS_DOMAINSET_H_ 33 34#include <sys/_domainset.h> 35#include <sys/bitset.h> 36#include <sys/queue.h> 37 38#define _NDOMAINSETBITS _BITSET_BITS 39#define _NDOMAINSETWORDS __bitset_words(DOMAINSET_SETSIZE) 40 41#define DOMAINSETBUFSIZ \ 42 (((2 + sizeof(long) * 2) * _NDOMAINSETWORDS) + \ 43 sizeof("::") + sizeof(__XSTRING(DOMAINSET_POLICY_MAX)) + \ 44 sizeof(__XSTRING(MAXMEMDOM))) 45 46#define DOMAINSET_CLR(n, p) BIT_CLR(DOMAINSET_SETSIZE, n, p) 47#define DOMAINSET_COPY(f, t) BIT_COPY(DOMAINSET_SETSIZE, f, t) 48#define DOMAINSET_ISSET(n, p) BIT_ISSET(DOMAINSET_SETSIZE, n, p) 49#define DOMAINSET_SET(n, p) BIT_SET(DOMAINSET_SETSIZE, n, p) 50#define DOMAINSET_ZERO(p) BIT_ZERO(DOMAINSET_SETSIZE, p) 51#define DOMAINSET_FILL(p) BIT_FILL(DOMAINSET_SETSIZE, p) 52#define DOMAINSET_SETOF(n, p) BIT_SETOF(DOMAINSET_SETSIZE, n, p) 53#define DOMAINSET_EMPTY(p) BIT_EMPTY(DOMAINSET_SETSIZE, p) 54#define DOMAINSET_ISFULLSET(p) BIT_ISFULLSET(DOMAINSET_SETSIZE, p) 55#define DOMAINSET_SUBSET(p, c) BIT_SUBSET(DOMAINSET_SETSIZE, p, c) 56#define DOMAINSET_OVERLAP(p, c) BIT_OVERLAP(DOMAINSET_SETSIZE, p, c) 57#define DOMAINSET_CMP(p, c) BIT_CMP(DOMAINSET_SETSIZE, p, c) 58#define DOMAINSET_OR(d, s) BIT_OR(DOMAINSET_SETSIZE, d, s) 59#define DOMAINSET_AND(d, s) BIT_AND(DOMAINSET_SETSIZE, d, s) 60#define DOMAINSET_ANDNOT(d, s) BIT_ANDNOT(DOMAINSET_SETSIZE, d, s) 61#define DOMAINSET_CLR_ATOMIC(n, p) BIT_CLR_ATOMIC(DOMAINSET_SETSIZE, n, p) 62#define DOMAINSET_SET_ATOMIC(n, p) BIT_SET_ATOMIC(DOMAINSET_SETSIZE, n, p) 63#define DOMAINSET_SET_ATOMIC_ACQ(n, p) \ 64 BIT_SET_ATOMIC_ACQ(DOMAINSET_SETSIZE, n, p) 65#define DOMAINSET_AND_ATOMIC(n, p) BIT_AND_ATOMIC(DOMAINSET_SETSIZE, n, p) 66#define DOMAINSET_OR_ATOMIC(d, s) BIT_OR_ATOMIC(DOMAINSET_SETSIZE, d, s) 67#define DOMAINSET_COPY_STORE_REL(f, t) \ 68 BIT_COPY_STORE_REL(DOMAINSET_SETSIZE, f, t) 69#define DOMAINSET_FFS(p) BIT_FFS(DOMAINSET_SETSIZE, p) 70#define DOMAINSET_FLS(p) BIT_FLS(DOMAINSET_SETSIZE, p) 71#define DOMAINSET_COUNT(p) ((int)BIT_COUNT(DOMAINSET_SETSIZE, p)) 72#define DOMAINSET_FSET BITSET_FSET(_NDOMAINSETWORDS) 73#define DOMAINSET_T_INITIALIZER BITSET_T_INITIALIZER 74 75#define DOMAINSET_POLICY_INVALID 0 76#define DOMAINSET_POLICY_ROUNDROBIN 1 77#define DOMAINSET_POLICY_FIRSTTOUCH 2 78#define DOMAINSET_POLICY_PREFER 3 79#define DOMAINSET_POLICY_INTERLEAVE 4 80#define DOMAINSET_POLICY_MAX DOMAINSET_POLICY_INTERLEAVE 81 82#ifdef _KERNEL 83#if MAXMEMDOM < 256 84typedef uint8_t domainid_t; 85#else 86typedef uint16_t domainid_t; 87#endif 88 89struct domainset { 90 LIST_ENTRY(domainset) ds_link; 91 domainset_t ds_mask; /* allowed domains. */ 92 uint16_t ds_policy; /* Policy type. */ 93 domainid_t ds_prefer; /* Preferred domain or -1. */ 94 domainid_t ds_cnt; /* popcnt from above. */ 95 domainid_t ds_order[MAXMEMDOM]; /* nth domain table. */ 96}; 97 98extern struct domainset domainset_firsttouch; 99#define DOMAINSET_FT() (&domainset_firsttouch) 100extern struct domainset domainset_interleave; 101#define DOMAINSET_IL() (&domainset_interleave) 102extern struct domainset domainset_fixed[MAXMEMDOM], domainset_prefer[MAXMEMDOM]; 103#define DOMAINSET_FIXED(domain) (&domainset_fixed[(domain)]) 104#define DOMAINSET_PREF(domain) (&domainset_prefer[(domain)]) 105extern struct domainset domainset_roundrobin; 106#define DOMAINSET_RR() (&domainset_roundrobin) 107 108void domainset_init(void); 109void domainset_zero(void); 110 111/* 112 * Add a domainset to the system based on a key initializing policy, prefer, 113 * and mask. Do not create and directly use domainset structures. The 114 * returned value will not match the key pointer. 115 */ 116struct domainset *domainset_create(const struct domainset *); 117#ifdef _SYS_SYSCTL_H_ 118int sysctl_handle_domainset(SYSCTL_HANDLER_ARGS); 119#endif 120 121#else 122__BEGIN_DECLS 123int cpuset_getdomain(cpulevel_t, cpuwhich_t, id_t, size_t, domainset_t *, 124 int *); 125int cpuset_setdomain(cpulevel_t, cpuwhich_t, id_t, size_t, 126 const domainset_t *, int); 127 128__END_DECLS 129#endif 130#endif /* !_SYS_DOMAINSET_H_ */ 131