/* * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC. * Copyright (C) 2007 The Regents of the University of California. * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER). * Written by Brian Behlendorf . * UCRL-CODE-235197 * * This file is part of the SPL, Solaris Porting Layer. * For details, see . * * The SPL is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * * The SPL is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * for more details. * * You should have received a copy of the GNU General Public License along * with the SPL. If not, see . */ #ifndef _SPL_SYSMACROS_H #define _SPL_SYSMACROS_H #include #include #include #include #include #include #include #ifdef HAVE_SCHED_RT_HEADER #include #endif #ifndef _KERNEL #define _KERNEL __KERNEL__ #endif #define FALSE 0 #define TRUE 1 #define INT8_MAX (127) #define INT8_MIN (-128) #define UINT8_MAX (255) #define UINT8_MIN (0) #define INT16_MAX (32767) #define INT16_MIN (-32768) #define UINT16_MAX (65535) #define UINT16_MIN (0) #define INT32_MAX INT_MAX #define INT32_MIN INT_MIN #define UINT32_MAX UINT_MAX #define UINT32_MIN UINT_MIN #define INT64_MAX LLONG_MAX #define INT64_MIN LLONG_MIN #define UINT64_MAX ULLONG_MAX #define UINT64_MIN ULLONG_MIN #define NBBY 8 #define MAXMSGLEN 256 #define MAXNAMELEN 256 #define MAXPATHLEN 4096 #define MAXOFFSET_T LLONG_MAX #define MAXBSIZE 8192 #define DEV_BSIZE 512 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ #define proc_pageout NULL #define curproc current #define max_ncpus num_possible_cpus() #define boot_ncpus num_online_cpus() #define CPU_SEQID smp_processor_id() #define is_system_labeled() 0 #ifndef RLIM64_INFINITY #define RLIM64_INFINITY (~0ULL) #endif /* * 0..MAX_PRIO-1: Process priority * 0..MAX_RT_PRIO-1: RT priority tasks * MAX_RT_PRIO..MAX_PRIO-1: SCHED_NORMAL tasks * * Treat shim tasks as SCHED_NORMAL tasks */ #define minclsyspri (MAX_PRIO-1) #define maxclsyspri (MAX_RT_PRIO) #define defclsyspri (DEFAULT_PRIO) #ifndef NICE_TO_PRIO #define NICE_TO_PRIO(nice) (MAX_RT_PRIO + (nice) + 20) #endif #ifndef PRIO_TO_NICE #define PRIO_TO_NICE(prio) ((prio) - MAX_RT_PRIO - 20) #endif /* * Missing macros */ #ifndef PAGESIZE #define PAGESIZE PAGE_SIZE #endif #ifndef PAGESHIFT #define PAGESHIFT PAGE_SHIFT #endif /* Dtrace probes do not exist in the linux kernel */ #ifdef DTRACE_PROBE #undef DTRACE_PROBE #endif /* DTRACE_PROBE */ #define DTRACE_PROBE(a) ((void)0) #ifdef DTRACE_PROBE1 #undef DTRACE_PROBE1 #endif /* DTRACE_PROBE1 */ #define DTRACE_PROBE1(a, b, c) ((void)0) #ifdef DTRACE_PROBE2 #undef DTRACE_PROBE2 #endif /* DTRACE_PROBE2 */ #define DTRACE_PROBE2(a, b, c, d, e) ((void)0) #ifdef DTRACE_PROBE3 #undef DTRACE_PROBE3 #endif /* DTRACE_PROBE3 */ #define DTRACE_PROBE3(a, b, c, d, e, f, g) ((void)0) #ifdef DTRACE_PROBE4 #undef DTRACE_PROBE4 #endif /* DTRACE_PROBE4 */ #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) ((void)0) /* Missing globals */ extern char spl_gitrev[64]; extern unsigned long spl_hostid; /* Missing misc functions */ extern uint32_t zone_get_hostid(void *zone); extern void spl_setup(void); extern void spl_cleanup(void); #define highbit(x) __fls(x) #define lowbit(x) __ffs(x) #define highbit64(x) fls64(x) #define makedevice(maj, min) makedev(maj, min) /* common macros */ #ifndef MIN #define MIN(a, b) ((a) < (b) ? (a) : (b)) #endif #ifndef MAX #define MAX(a, b) ((a) < (b) ? (b) : (a)) #endif #ifndef ABS #define ABS(a) ((a) < 0 ? -(a) : (a)) #endif #ifndef DIV_ROUND_UP #define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d)) #endif #ifndef roundup #define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y)) #endif #ifndef howmany #define howmany(x, y) (((x) + ((y) - 1)) / (y)) #endif /* * Compatibility macros/typedefs needed for Solaris -> Linux port */ #define P2ALIGN(x, align) ((x) & -(align)) #define P2CROSS(x, y, align) (((x) ^ (y)) > (align) - 1) #define P2ROUNDUP(x, align) ((((x) - 1) | ((align) - 1)) + 1) #define P2PHASE(x, align) ((x) & ((align) - 1)) #define P2NPHASE(x, align) (-(x) & ((align) - 1)) #define ISP2(x) (((x) & ((x) - 1)) == 0) #define IS_P2ALIGNED(v, a) ((((uintptr_t)(v)) & ((uintptr_t)(a) - 1)) == 0) #define P2BOUNDARY(off, len, align) \ (((off) ^ ((off) + (len) - 1)) > (align) - 1) /* * Typed version of the P2* macros. These macros should be used to ensure * that the result is correctly calculated based on the data type of (x), * which is passed in as the last argument, regardless of the data * type of the alignment. For example, if (x) is of type uint64_t, * and we want to round it up to a page boundary using "PAGESIZE" as * the alignment, we can do either * * P2ROUNDUP(x, (uint64_t)PAGESIZE) * or * P2ROUNDUP_TYPED(x, PAGESIZE, uint64_t) */ #define P2ALIGN_TYPED(x, align, type) \ ((type)(x) & -(type)(align)) #define P2PHASE_TYPED(x, align, type) \ ((type)(x) & ((type)(align) - 1)) #define P2NPHASE_TYPED(x, align, type) \ (-(type)(x) & ((type)(align) - 1)) #define P2ROUNDUP_TYPED(x, align, type) \ ((((type)(x) - 1) | ((type)(align) - 1)) + 1) #define P2END_TYPED(x, align, type) \ (-(~(type)(x) & -(type)(align))) #define P2PHASEUP_TYPED(x, align, phase, type) \ ((type)(phase) - (((type)(phase) - (type)(x)) & -(type)(align))) #define P2CROSS_TYPED(x, y, align, type) \ (((type)(x) ^ (type)(y)) > (type)(align) - 1) #define P2SAMEHIGHBIT_TYPED(x, y, type) \ (((type)(x) ^ (type)(y)) < ((type)(x) & (type)(y))) #if defined(_KERNEL) && !defined(_KMEMUSER) && !defined(offsetof) /* avoid any possibility of clashing with version */ #define offsetof(s, m) ((size_t)(&(((s *)0)->m))) #endif #endif /* _SPL_SYSMACROS_H */