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716154c5 BB |
1 | /*****************************************************************************\ |
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 | 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 | 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 BB |
22 | * with the SPL. If not, see <http://www.gnu.org/licenses/>. |
23 | \*****************************************************************************/ | |
715f6251 | 24 | |
14c5326c | 25 | #ifndef _SPL_SYSMACROS_H |
26 | #define _SPL_SYSMACROS_H | |
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> |
05ae387b | 32 | #include <sys/varargs.h> |
36e6f861 | 33 | #include <sys/zone.h> |
1ec74a11 | 34 | #include <sys/signal.h> |
14c5326c | 35 | |
10087fe1 RY |
36 | #ifdef HAVE_SCHED_RT_HEADER |
37 | #include <linux/sched/rt.h> | |
38 | #endif | |
39 | ||
14c5326c | 40 | #ifndef _KERNEL |
32c6147d | 41 | #define _KERNEL __KERNEL__ |
14c5326c | 42 | #endif |
43 | ||
ed61a7d0 | 44 | #define FALSE 0 |
45 | #define TRUE 1 | |
b0dd3380 | 46 | |
32c6147d BB |
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 | |
3b3ba48f | 59 | #define UINT32_MAX UINT_MAX |
60 | #define UINT32_MIN UINT_MIN | |
32c6147d | 61 | |
3b3ba48f | 62 | #define INT64_MAX LLONG_MAX |
63 | #define INT64_MIN LLONG_MIN | |
32c6147d | 64 | #define UINT64_MAX ULLONG_MAX |
3b3ba48f | 65 | #define UINT64_MIN ULLONG_MIN |
66 | ||
32c6147d | 67 | #define NBBY 8 |
00ba7ef9 | 68 | #define ENOTSUP EOPNOTSUPP |
b0dd3380 | 69 | |
05ae387b | 70 | #define MAXMSGLEN 256 |
32c6147d BB |
71 | #define MAXNAMELEN 256 |
72 | #define MAXPATHLEN PATH_MAX | |
d837ae39 | 73 | #define MAXOFFSET_T LLONG_MAX |
b0dd3380 | 74 | #define MAXBSIZE 8192 |
75 | #define DEV_BSIZE 512 | |
76 | #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ | |
77 | ||
36b313da | 78 | #define proc_pageout NULL |
44e406d7 | 79 | #define curproc current |
15b52c08 RC |
80 | #define max_ncpus num_possible_cpus() |
81 | #define CPU_SEQID smp_processor_id() | |
b0dd3380 | 82 | #define _NOTE(x) |
ae4c36ad | 83 | #define is_system_labeled() 0 |
14c5326c | 84 | |
a50cede3 BB |
85 | #ifndef RLIM64_INFINITY |
86 | #define RLIM64_INFINITY (~0ULL) | |
87 | #endif | |
6adf99e7 | 88 | |
14c5326c | 89 | /* 0..MAX_PRIO-1: Process priority |
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 | */ | |
32c6147d BB |
95 | #define minclsyspri (MAX_RT_PRIO) |
96 | #define maxclsyspri (MAX_PRIO-1) | |
14c5326c | 97 | |
9e4fb5c2 | 98 | #ifndef NICE_TO_PRIO |
14c5326c | 99 | #define NICE_TO_PRIO(nice) (MAX_RT_PRIO + (nice) + 20) |
9e4fb5c2 LG |
100 | #endif |
101 | #ifndef PRIO_TO_NICE | |
14c5326c | 102 | #define PRIO_TO_NICE(prio) ((prio) - MAX_RT_PRIO - 20) |
9e4fb5c2 | 103 | #endif |
14c5326c | 104 | |
10946b02 AX |
105 | /* |
106 | * Missing macros | |
14c5326c | 107 | */ |
10946b02 | 108 | #ifndef PAGESIZE |
32c6147d | 109 | #define PAGESIZE PAGE_SIZE |
10946b02 | 110 | #endif |
14c5326c | 111 | |
112 | /* from Solaris sys/byteorder.h */ | |
32c6147d BB |
113 | #define BSWAP_8(x) ((x) & 0xff) |
114 | #define BSWAP_16(x) ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8)) | |
115 | #define BSWAP_32(x) ((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16)) | |
116 | #define BSWAP_64(x) ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32)) | |
14c5326c | 117 | |
118 | /* Map some simple functions. | |
119 | */ | |
32c6147d | 120 | #define bzero(ptr,size) memset(ptr,0,size) |
9dd5d138 | 121 | #define bcopy(src,dest,size) memmove(dest,src,size) |
b0dd3380 | 122 | #define bcmp(src,dest,size) memcmp((src), (dest), (size_t)(size)) |
a713518f | 123 | |
124 | /* Dtrace probes do not exist in the linux kernel */ | |
0f372044 BB |
125 | #ifdef DTRACE_PROBE |
126 | #undef DTRACE_PROBE | |
127 | #endif /* DTRACE_PROBE */ | |
128 | #define DTRACE_PROBE(a) ((void)0) | |
a713518f | 129 | |
130 | #ifdef DTRACE_PROBE1 | |
131 | #undef DTRACE_PROBE1 | |
132 | #endif /* DTRACE_PROBE1 */ | |
3b3ba48f | 133 | #define DTRACE_PROBE1(a, b, c) ((void)0) |
a713518f | 134 | |
135 | #ifdef DTRACE_PROBE2 | |
136 | #undef DTRACE_PROBE2 | |
137 | #endif /* DTRACE_PROBE2 */ | |
3b3ba48f | 138 | #define DTRACE_PROBE2(a, b, c, d, e) ((void)0) |
a713518f | 139 | |
140 | #ifdef DTRACE_PROBE3 | |
141 | #undef DTRACE_PROBE3 | |
142 | #endif /* DTRACE_PROBE3 */ | |
3b3ba48f | 143 | #define DTRACE_PROBE3(a, b, c, d, e, f, g) ((void)0) |
a713518f | 144 | |
145 | #ifdef DTRACE_PROBE4 | |
146 | #undef DTRACE_PROBE4 | |
147 | #endif /* DTRACE_PROBE4 */ | |
3b3ba48f | 148 | #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) ((void)0) |
14c5326c | 149 | |
77b1fe8f | 150 | /* Missing globals */ |
0835057e | 151 | extern char spl_version[32]; |
fa6f7d8f | 152 | extern unsigned long spl_hostid; |
14c5326c | 153 | |
77b1fe8f | 154 | /* Missing misc functions */ |
99639e4a | 155 | extern uint32_t zone_get_hostid(void *zone); |
51a727e9 BB |
156 | extern void spl_setup(void); |
157 | extern void spl_cleanup(void); | |
77b1fe8f | 158 | |
10946b02 AX |
159 | #define highbit64(x) fls64(x) |
160 | #define makedevice(maj,min) makedev(maj,min) | |
14c5326c | 161 | |
14c5326c | 162 | /* common macros */ |
163 | #ifndef MIN | |
37319315 | 164 | #define MIN(a, b) ((a) < (b) ? (a) : (b)) |
14c5326c | 165 | #endif |
166 | #ifndef MAX | |
37319315 | 167 | #define MAX(a, b) ((a) < (b) ? (b) : (a)) |
14c5326c | 168 | #endif |
169 | #ifndef ABS | |
37319315 BB |
170 | #define ABS(a) ((a) < 0 ? -(a) : (a)) |
171 | #endif | |
172 | #ifndef DIV_ROUND_UP | |
173 | #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) | |
174 | #endif | |
175 | #ifndef roundup | |
176 | #define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y)) | |
14c5326c | 177 | #endif |
9e4fb5c2 LG |
178 | #ifndef howmany |
179 | #define howmany(x, y) (((x) + ((y) - 1)) / (y)) | |
180 | #endif | |
14c5326c | 181 | |
182 | /* | |
183 | * Compatibility macros/typedefs needed for Solaris -> Linux port | |
184 | */ | |
32c6147d BB |
185 | #define P2ALIGN(x, align) ((x) & -(align)) |
186 | #define P2CROSS(x, y, align) (((x) ^ (y)) > (align) - 1) | |
187 | #define P2ROUNDUP(x, align) (-(-(x) & -(align))) | |
188 | #define P2PHASE(x, align) ((x) & ((align) - 1)) | |
189 | #define P2NPHASE(x, align) (-(x) & ((align) - 1)) | |
190 | #define ISP2(x) (((x) & ((x) - 1)) == 0) | |
191 | #define IS_P2ALIGNED(v, a) ((((uintptr_t)(v)) & ((uintptr_t)(a) - 1))==0) | |
160c63ab | 192 | #define P2BOUNDARY(off, len, align) \ |
32c6147d | 193 | (((off) ^ ((off) + (len) - 1)) > (align) - 1) |
14c5326c | 194 | |
195 | /* | |
196 | * Typed version of the P2* macros. These macros should be used to ensure | |
197 | * that the result is correctly calculated based on the data type of (x), | |
198 | * which is passed in as the last argument, regardless of the data | |
199 | * type of the alignment. For example, if (x) is of type uint64_t, | |
200 | * and we want to round it up to a page boundary using "PAGESIZE" as | |
201 | * the alignment, we can do either | |
32c6147d | 202 | * |
14c5326c | 203 | * P2ROUNDUP(x, (uint64_t)PAGESIZE) |
204 | * or | |
205 | * P2ROUNDUP_TYPED(x, PAGESIZE, uint64_t) | |
206 | */ | |
207 | #define P2ALIGN_TYPED(x, align, type) \ | |
208 | ((type)(x) & -(type)(align)) | |
209 | #define P2PHASE_TYPED(x, align, type) \ | |
210 | ((type)(x) & ((type)(align) - 1)) | |
211 | #define P2NPHASE_TYPED(x, align, type) \ | |
212 | (-(type)(x) & ((type)(align) - 1)) | |
213 | #define P2ROUNDUP_TYPED(x, align, type) \ | |
214 | (-(-(type)(x) & -(type)(align))) | |
215 | #define P2END_TYPED(x, align, type) \ | |
216 | (-(~(type)(x) & -(type)(align))) | |
217 | #define P2PHASEUP_TYPED(x, align, phase, type) \ | |
218 | ((type)(phase) - (((type)(phase) - (type)(x)) & -(type)(align))) | |
219 | #define P2CROSS_TYPED(x, y, align, type) \ | |
220 | (((type)(x) ^ (type)(y)) > (type)(align) - 1) | |
221 | #define P2SAMEHIGHBIT_TYPED(x, y, type) \ | |
222 | (((type)(x) ^ (type)(y)) < ((type)(x) & (type)(y))) | |
223 | ||
224 | #if defined(_KERNEL) && !defined(_KMEMUSER) && !defined(offsetof) | |
225 | ||
226 | /* avoid any possibility of clashing with <stddef.h> version */ | |
227 | ||
228 | #define offsetof(s, m) ((size_t)(&(((s *)0)->m))) | |
229 | #endif | |
230 | ||
14c5326c | 231 | #endif /* _SPL_SYSMACROS_H */ |