2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2017, Jeffrey Roberson <jeff@freebsd.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice unmodified, this list of conditions, and the following
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.
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.
31 #ifndef _SYS_DOMAINSET_H_
32 #define _SYS_DOMAINSET_H_
34 #include <sys/_domainset.h>
35 #include <sys/bitset.h>
36 #include <sys/queue.h>
38 #define _NDOMAINSETBITS _BITSET_BITS
39 #define _NDOMAINSETWORDS __bitset_words(DOMAINSET_SETSIZE)
41 #define DOMAINSETBUFSIZ \
42 (((2 + sizeof(long) * 2) * _NDOMAINSETWORDS) + \
43 sizeof("::") + sizeof(__XSTRING(DOMAINSET_POLICY_MAX)) + \
44 sizeof(__XSTRING(MAXMEMDOM)))
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
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
84 typedef uint8_t domainid_t;
86 typedef uint16_t domainid_t;
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. */
98 extern struct domainset domainset_fixed[MAXMEMDOM], domainset_prefer[MAXMEMDOM];
99 #define DOMAINSET_FIXED(domain) (&domainset_fixed[(domain)])
100 #define DOMAINSET_PREF(domain) (&domainset_prefer[(domain)])
101 extern struct domainset domainset_roundrobin;
102 #define DOMAINSET_RR() (&domainset_roundrobin)
104 void domainset_init(void);
105 void domainset_zero(void);
108 * Add a domainset to the system based on a key initializing policy, prefer,
109 * and mask. Do not create and directly use domainset structures. The
110 * returned value will not match the key pointer.
112 struct domainset *domainset_create(const struct domainset *);
113 #ifdef _SYS_SYSCTL_H_
114 int sysctl_handle_domainset(SYSCTL_HANDLER_ARGS);
119 int cpuset_getdomain(cpulevel_t, cpuwhich_t, id_t, size_t, domainset_t *,
121 int cpuset_setdomain(cpulevel_t, cpuwhich_t, id_t, size_t,
122 const domainset_t *, int);
126 #endif /* !_SYS_DOMAINSET_H_ */