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4b393c50 | 1 | /* |
716154c5 BB |
2 | * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC. |
3 | * Copyright (C) 2007 The Regents of the University of California. | |
4 | * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER). | |
5 | * Written by Brian Behlendorf <behlendorf1@llnl.gov>. | |
715f6251 BB |
6 | * UCRL-CODE-235197 |
7 | * | |
716154c5 | 8 | * This file is part of the SPL, Solaris Porting Layer. |
3d6af2dd | 9 | * For details, see <http://zfsonlinux.org/>. |
716154c5 BB |
10 | * |
11 | * The SPL is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the | |
13 | * Free Software Foundation; either version 2 of the License, or (at your | |
14 | * option) any later version. | |
715f6251 | 15 | * |
716154c5 | 16 | * The SPL is distributed in the hope that it will be useful, but WITHOUT |
715f6251 BB |
17 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
18 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
19 | * for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License along | |
716154c5 | 22 | * with the SPL. If not, see <http://www.gnu.org/licenses/>. |
4b393c50 | 23 | */ |
715f6251 | 24 | |
14c5326c | 25 | #ifndef _SPL_SYSMACROS_H |
5461eefe | 26 | #define _SPL_SYSMACROS_H |
14c5326c | 27 | |
14c5326c | 28 | #include <linux/module.h> |
10087fe1 | 29 | #include <linux/sched.h> |
15b52c08 | 30 | #include <linux/cpumask.h> |
57d1b188 | 31 | #include <sys/debug.h> |
36e6f861 | 32 | #include <sys/zone.h> |
1ec74a11 | 33 | #include <sys/signal.h> |
43b857fd | 34 | #include <asm/page.h> |
14c5326c | 35 | |
10087fe1 RY |
36 | #ifdef HAVE_SCHED_RT_HEADER |
37 | #include <linux/sched/rt.h> | |
38 | #endif | |
39 | ||
14c5326c | 40 | #ifndef _KERNEL |
5461eefe | 41 | #define _KERNEL __KERNEL__ |
14c5326c BB |
42 | #endif |
43 | ||
5461eefe BB |
44 | #define FALSE 0 |
45 | #define TRUE 1 | |
46 | ||
47 | #define INT8_MAX (127) | |
48 | #define INT8_MIN (-128) | |
49 | #define UINT8_MAX (255) | |
50 | #define UINT8_MIN (0) | |
51 | ||
52 | #define INT16_MAX (32767) | |
53 | #define INT16_MIN (-32768) | |
54 | #define UINT16_MAX (65535) | |
55 | #define UINT16_MIN (0) | |
56 | ||
57 | #define INT32_MAX INT_MAX | |
58 | #define INT32_MIN INT_MIN | |
59 | #define UINT32_MAX UINT_MAX | |
60 | #define UINT32_MIN UINT_MIN | |
61 | ||
62 | #define INT64_MAX LLONG_MAX | |
63 | #define INT64_MIN LLONG_MIN | |
64 | #define UINT64_MAX ULLONG_MAX | |
65 | #define UINT64_MIN ULLONG_MIN | |
66 | ||
67 | #define NBBY 8 | |
5461eefe BB |
68 | |
69 | #define MAXMSGLEN 256 | |
70 | #define MAXNAMELEN 256 | |
a9125891 | 71 | #define MAXPATHLEN 4096 |
5461eefe BB |
72 | #define MAXOFFSET_T LLONG_MAX |
73 | #define MAXBSIZE 8192 | |
74 | #define DEV_BSIZE 512 | |
75 | #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ | |
76 | ||
77 | #define proc_pageout NULL | |
78 | #define curproc current | |
79 | #define max_ncpus num_possible_cpus() | |
80 | #define boot_ncpus num_online_cpus() | |
81 | #define CPU_SEQID smp_processor_id() | |
5461eefe | 82 | #define is_system_labeled() 0 |
14c5326c | 83 | |
a50cede3 | 84 | #ifndef RLIM64_INFINITY |
5461eefe | 85 | #define RLIM64_INFINITY (~0ULL) |
a50cede3 | 86 | #endif |
6adf99e7 | 87 | |
5461eefe BB |
88 | /* |
89 | * 0..MAX_PRIO-1: Process priority | |
14c5326c BB |
90 | * 0..MAX_RT_PRIO-1: RT priority tasks |
91 | * MAX_RT_PRIO..MAX_PRIO-1: SCHED_NORMAL tasks | |
92 | * | |
93 | * Treat shim tasks as SCHED_NORMAL tasks | |
94 | */ | |
5461eefe BB |
95 | #define minclsyspri (MAX_PRIO-1) |
96 | #define maxclsyspri (MAX_RT_PRIO) | |
97 | #define defclsyspri (DEFAULT_PRIO) | |
14c5326c | 98 | |
1538f4b6 | 99 | #ifndef NICE_TO_PRIO |
5461eefe | 100 | #define NICE_TO_PRIO(nice) (MAX_RT_PRIO + (nice) + 20) |
1538f4b6 CC |
101 | #endif |
102 | #ifndef PRIO_TO_NICE | |
5461eefe | 103 | #define PRIO_TO_NICE(prio) ((prio) - MAX_RT_PRIO - 20) |
1538f4b6 | 104 | #endif |
14c5326c | 105 | |
f9bde4f7 | 106 | /* |
107 | * Missing macros | |
14c5326c | 108 | */ |
f9bde4f7 | 109 | #ifndef PAGESIZE |
5461eefe | 110 | #define PAGESIZE PAGE_SIZE |
f9bde4f7 | 111 | #endif |
14c5326c | 112 | |
43b857fd | 113 | #ifndef PAGESHIFT |
5461eefe | 114 | #define PAGESHIFT PAGE_SHIFT |
43b857fd DQ |
115 | #endif |
116 | ||
a713518f | 117 | /* Dtrace probes do not exist in the linux kernel */ |
0f372044 BB |
118 | #ifdef DTRACE_PROBE |
119 | #undef DTRACE_PROBE | |
120 | #endif /* DTRACE_PROBE */ | |
5461eefe | 121 | #define DTRACE_PROBE(a) ((void)0) |
a713518f BB |
122 | |
123 | #ifdef DTRACE_PROBE1 | |
124 | #undef DTRACE_PROBE1 | |
125 | #endif /* DTRACE_PROBE1 */ | |
5461eefe | 126 | #define DTRACE_PROBE1(a, b, c) ((void)0) |
a713518f BB |
127 | |
128 | #ifdef DTRACE_PROBE2 | |
129 | #undef DTRACE_PROBE2 | |
130 | #endif /* DTRACE_PROBE2 */ | |
5461eefe | 131 | #define DTRACE_PROBE2(a, b, c, d, e) ((void)0) |
a713518f BB |
132 | |
133 | #ifdef DTRACE_PROBE3 | |
134 | #undef DTRACE_PROBE3 | |
135 | #endif /* DTRACE_PROBE3 */ | |
5461eefe | 136 | #define DTRACE_PROBE3(a, b, c, d, e, f, g) ((void)0) |
a713518f BB |
137 | |
138 | #ifdef DTRACE_PROBE4 | |
139 | #undef DTRACE_PROBE4 | |
140 | #endif /* DTRACE_PROBE4 */ | |
5461eefe | 141 | #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) ((void)0) |
14c5326c | 142 | |
77b1fe8f | 143 | /* Missing globals */ |
0835057e | 144 | extern char spl_version[32]; |
fa6f7d8f | 145 | extern unsigned long spl_hostid; |
14c5326c | 146 | |
77b1fe8f | 147 | /* Missing misc functions */ |
99639e4a | 148 | extern uint32_t zone_get_hostid(void *zone); |
51a727e9 BB |
149 | extern void spl_setup(void); |
150 | extern void spl_cleanup(void); | |
77b1fe8f | 151 | |
d2f97b2a TC |
152 | #define highbit(x) __fls(x) |
153 | #define lowbit(x) __ffs(x) | |
154 | ||
87f8055a | 155 | #define highbit64(x) fls64(x) |
5461eefe | 156 | #define makedevice(maj, min) makedev(maj, min) |
14c5326c | 157 | |
14c5326c BB |
158 | /* common macros */ |
159 | #ifndef MIN | |
5461eefe | 160 | #define MIN(a, b) ((a) < (b) ? (a) : (b)) |
14c5326c BB |
161 | #endif |
162 | #ifndef MAX | |
5461eefe | 163 | #define MAX(a, b) ((a) < (b) ? (b) : (a)) |
14c5326c BB |
164 | #endif |
165 | #ifndef ABS | |
5461eefe | 166 | #define ABS(a) ((a) < 0 ? -(a) : (a)) |
37319315 BB |
167 | #endif |
168 | #ifndef DIV_ROUND_UP | |
5461eefe | 169 | #define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d)) |
37319315 BB |
170 | #endif |
171 | #ifndef roundup | |
5461eefe | 172 | #define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y)) |
14c5326c | 173 | #endif |
7f23e001 | 174 | #ifndef howmany |
5461eefe | 175 | #define howmany(x, y) (((x) + ((y) - 1)) / (y)) |
7f23e001 | 176 | #endif |
14c5326c BB |
177 | |
178 | /* | |
179 | * Compatibility macros/typedefs needed for Solaris -> Linux port | |
180 | */ | |
5461eefe BB |
181 | #define P2ALIGN(x, align) ((x) & -(align)) |
182 | #define P2CROSS(x, y, align) (((x) ^ (y)) > (align) - 1) | |
183 | #define P2ROUNDUP(x, align) ((((x) - 1) | ((align) - 1)) + 1) | |
184 | #define P2PHASE(x, align) ((x) & ((align) - 1)) | |
185 | #define P2NPHASE(x, align) (-(x) & ((align) - 1)) | |
186 | #define ISP2(x) (((x) & ((x) - 1)) == 0) | |
187 | #define IS_P2ALIGNED(v, a) ((((uintptr_t)(v)) & ((uintptr_t)(a) - 1)) == 0) | |
188 | #define P2BOUNDARY(off, len, align) \ | |
32c6147d | 189 | (((off) ^ ((off) + (len) - 1)) > (align) - 1) |
14c5326c BB |
190 | |
191 | /* | |
192 | * Typed version of the P2* macros. These macros should be used to ensure | |
193 | * that the result is correctly calculated based on the data type of (x), | |
194 | * which is passed in as the last argument, regardless of the data | |
195 | * type of the alignment. For example, if (x) is of type uint64_t, | |
196 | * and we want to round it up to a page boundary using "PAGESIZE" as | |
197 | * the alignment, we can do either | |
32c6147d | 198 | * |
14c5326c BB |
199 | * P2ROUNDUP(x, (uint64_t)PAGESIZE) |
200 | * or | |
201 | * P2ROUNDUP_TYPED(x, PAGESIZE, uint64_t) | |
202 | */ | |
5461eefe BB |
203 | #define P2ALIGN_TYPED(x, align, type) \ |
204 | ((type)(x) & -(type)(align)) | |
205 | #define P2PHASE_TYPED(x, align, type) \ | |
206 | ((type)(x) & ((type)(align) - 1)) | |
207 | #define P2NPHASE_TYPED(x, align, type) \ | |
208 | (-(type)(x) & ((type)(align) - 1)) | |
209 | #define P2ROUNDUP_TYPED(x, align, type) \ | |
210 | ((((type)(x) - 1) | ((type)(align) - 1)) + 1) | |
211 | #define P2END_TYPED(x, align, type) \ | |
212 | (-(~(type)(x) & -(type)(align))) | |
213 | #define P2PHASEUP_TYPED(x, align, phase, type) \ | |
214 | ((type)(phase) - (((type)(phase) - (type)(x)) & -(type)(align))) | |
215 | #define P2CROSS_TYPED(x, y, align, type) \ | |
216 | (((type)(x) ^ (type)(y)) > (type)(align) - 1) | |
217 | #define P2SAMEHIGHBIT_TYPED(x, y, type) \ | |
218 | (((type)(x) ^ (type)(y)) < ((type)(x) & (type)(y))) | |
14c5326c BB |
219 | |
220 | #if defined(_KERNEL) && !defined(_KMEMUSER) && !defined(offsetof) | |
221 | ||
222 | /* avoid any possibility of clashing with <stddef.h> version */ | |
223 | ||
5461eefe | 224 | #define offsetof(s, m) ((size_t)(&(((s *)0)->m))) |
14c5326c BB |
225 | #endif |
226 | ||
14c5326c | 227 | #endif /* _SPL_SYSMACROS_H */ |