]>
git.proxmox.com Git - mirror_spl.git/blob - include/sys/sysmacros.h
2 * This file is part of the SPL: Solaris Porting Layer.
4 * Copyright (c) 2008 Lawrence Livermore National Security, LLC.
5 * Produced at Lawrence Livermore National Laboratory
7 * Brian Behlendorf <behlendorf1@llnl.gov>,
8 * Herb Wartens <wartens2@llnl.gov>,
9 * Jim Garlick <garlick@llnl.gov>
12 * This is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This is distributed in the hope that it will be useful, but WITHOUT
18 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
22 * You should have received a copy of the GNU General Public License along
23 * with this program; if not, write to the Free Software Foundation, Inc.,
24 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
27 #ifndef _SPL_SYSMACROS_H
28 #define _SPL_SYSMACROS_H
34 #include <linux/module.h>
35 #include <sys/debug.h>
36 #include <sys/varargs.h>
38 #include <sys/signal.h>
41 #define _KERNEL __KERNEL__
49 #define INT32_MAX INT_MAX
50 #define INT32_MIN INT_MIN
51 #define UINT32_MAX UINT_MAX
52 #define UINT32_MIN UINT_MIN
53 #define INT64_MAX LLONG_MAX
54 #define INT64_MIN LLONG_MIN
55 #define UINT64_MAX ULLONG_MAX
56 #define UINT64_MIN ULLONG_MIN
59 #define ENOTSUP ENOTSUPP
62 #define MAXNAMELEN 256
63 #define MAXPATHLEN PATH_MAX
66 #define MAXOFFSET_T 0x7fffffffffffffffl
68 #define MAXOFFSET_T 0x7fffffffl
73 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
75 #define curproc current
76 #define proc_pageout NULL
78 #define CPU_SEQID smp_processor_id() /* I think... */
82 #define RLIM64_INFINITY RLIM_INFINITY
84 /* 0..MAX_PRIO-1: Process priority
85 * 0..MAX_RT_PRIO-1: RT priority tasks
86 * MAX_RT_PRIO..MAX_PRIO-1: SCHED_NORMAL tasks
88 * Treat shim tasks as SCHED_NORMAL tasks
90 #define minclsyspri (MAX_RT_PRIO)
91 #define maxclsyspri (MAX_PRIO-1)
93 #define NICE_TO_PRIO(nice) (MAX_RT_PRIO + (nice) + 20)
94 #define PRIO_TO_NICE(prio) ((prio) - MAX_RT_PRIO - 20)
98 #define PAGESIZE PAGE_SIZE
100 /* from Solaris sys/byteorder.h */
101 #define BSWAP_8(x) ((x) & 0xff)
102 #define BSWAP_16(x) ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8))
103 #define BSWAP_32(x) ((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16))
104 #define BSWAP_64(x) ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32))
106 /* Map some simple functions.
108 #define bzero(ptr,size) memset(ptr,0,size)
109 #define bcopy(src,dest,size) memcpy(dest,src,size)
110 #define bcmp(src,dest,size) memcmp((src), (dest), (size_t)(size))
112 /* Dtrace probes do not exist in the linux kernel */
115 #endif /* DTRACE_PROBE */
116 #define DTRACE_PROBE(a) ((void)0)
120 #endif /* DTRACE_PROBE1 */
121 #define DTRACE_PROBE1(a, b, c) ((void)0)
125 #endif /* DTRACE_PROBE2 */
126 #define DTRACE_PROBE2(a, b, c, d, e) ((void)0)
130 #endif /* DTRACE_PROBE3 */
131 #define DTRACE_PROBE3(a, b, c, d, e, f, g) ((void)0)
135 #endif /* DTRACE_PROBE4 */
136 #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) ((void)0)
138 /* Missing globals */
139 extern char spl_version
[16];
140 extern long spl_hostid
;
141 extern char hw_serial
[11];
144 /* Missing misc functions */
145 extern int highbit(unsigned long i
);
146 extern uint32_t zone_get_hostid(void *zone
);
147 extern void spl_setup(void);
148 extern void spl_cleanup(void);
150 #define makedevice(maj,min) makedev(maj,min)
154 #define MIN(a, b) ((a) < (b) ? (a) : (b))
157 #define MAX(a, b) ((a) < (b) ? (b) : (a))
160 #define ABS(a) ((a) < 0 ? -(a) : (a))
163 #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
166 #define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
170 * Compatibility macros/typedefs needed for Solaris -> Linux port
172 #define P2ALIGN(x, align) ((x) & -(align))
173 #define P2CROSS(x, y, align) (((x) ^ (y)) > (align) - 1)
174 #define P2ROUNDUP(x, align) (-(-(x) & -(align)))
175 #define P2PHASE(x, align) ((x) & ((align) - 1))
176 #define P2NPHASE(x, align) (-(x) & ((align) - 1))
177 #define ISP2(x) (((x) & ((x) - 1)) == 0)
178 #define IS_P2ALIGNED(v, a) ((((uintptr_t)(v)) & ((uintptr_t)(a) - 1)) == 0)
179 #define P2BOUNDARY(off, len, align) \
180 (((off) ^ ((off) + (len) - 1)) > (align) - 1)
183 * Typed version of the P2* macros. These macros should be used to ensure
184 * that the result is correctly calculated based on the data type of (x),
185 * which is passed in as the last argument, regardless of the data
186 * type of the alignment. For example, if (x) is of type uint64_t,
187 * and we want to round it up to a page boundary using "PAGESIZE" as
188 * the alignment, we can do either
189 * P2ROUNDUP(x, (uint64_t)PAGESIZE)
191 * P2ROUNDUP_TYPED(x, PAGESIZE, uint64_t)
193 #define P2ALIGN_TYPED(x, align, type) \
194 ((type)(x) & -(type)(align))
195 #define P2PHASE_TYPED(x, align, type) \
196 ((type)(x) & ((type)(align) - 1))
197 #define P2NPHASE_TYPED(x, align, type) \
198 (-(type)(x) & ((type)(align) - 1))
199 #define P2ROUNDUP_TYPED(x, align, type) \
200 (-(-(type)(x) & -(type)(align)))
201 #define P2END_TYPED(x, align, type) \
202 (-(~(type)(x) & -(type)(align)))
203 #define P2PHASEUP_TYPED(x, align, phase, type) \
204 ((type)(phase) - (((type)(phase) - (type)(x)) & -(type)(align)))
205 #define P2CROSS_TYPED(x, y, align, type) \
206 (((type)(x) ^ (type)(y)) > (type)(align) - 1)
207 #define P2SAMEHIGHBIT_TYPED(x, y, type) \
208 (((type)(x) ^ (type)(y)) < ((type)(x) & (type)(y)))
210 #if defined(_KERNEL) && !defined(_KMEMUSER) && !defined(offsetof)
212 /* avoid any possibility of clashing with <stddef.h> version */
214 #define offsetof(s, m) ((size_t)(&(((s *)0)->m)))
221 #endif /* _SPL_SYSMACROS_H */