/* * This file is part of the SPL: Solaris Porting Layer. * * Copyright (c) 2008 Lawrence Livermore National Security, LLC. * Produced at Lawrence Livermore National Laboratory * Written by: * Brian Behlendorf , * Herb Wartens , * Jim Garlick * UCRL-CODE-235197 * * This 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. * * This 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 this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #ifndef _SPL_SYSMACROS_H #define _SPL_SYSMACROS_H #ifdef __cplusplus extern "C" { #endif #include #include #include #include #include #ifndef _KERNEL #define _KERNEL __KERNEL__ #endif /* Missing defines. */ #define FALSE 0 #define TRUE 1 #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 ENOTSUP ENOTSUPP #define MAXMSGLEN 256 #define MAXNAMELEN 256 #define MAXPATHLEN PATH_MAX #define MAXOFFSET_T 0x7fffffffffffffffl #define MAXBSIZE 8192 #define DEV_BSIZE 512 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ #define max_ncpus 64 #define CPU_SEQID smp_processor_id() /* I think... */ #define _NOTE(x) #define RLIM64_INFINITY RLIM_INFINITY /* 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_RT_PRIO) #define maxclsyspri (MAX_PRIO-1) #define NICE_TO_PRIO(nice) (MAX_RT_PRIO + (nice) + 20) #define PRIO_TO_NICE(prio) ((prio) - MAX_RT_PRIO - 20) /* Missing macros */ #define PAGESIZE PAGE_SIZE /* from Solaris sys/byteorder.h */ #define BSWAP_8(x) ((x) & 0xff) #define BSWAP_16(x) ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8)) #define BSWAP_32(x) ((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16)) #define BSWAP_64(x) ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32)) /* Map some simple functions. */ #define bzero(ptr,size) memset(ptr,0,size) #define bcopy(src,dest,size) memcpy(dest,src,size) #define bcmp(src,dest,size) memcmp((src), (dest), (size_t)(size)) /* Dtrace probes do not exist in the linux kernel */ #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_version[16]; extern long spl_hostid; extern char hw_serial[11]; extern int p0; /* Missing misc functions */ extern int highbit(unsigned long i); extern int ddi_strtoul(const char *str, char **nptr, int base, unsigned long *result); #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 /* * 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) & -(align))) #define P2ROUNDUP_TYPED(x, align, type) \ (-(-(type)(x) & -(type)(align))) #define P2PHASE(x, align) ((x) & ((align) - 1)) #define P2NPHASE(x, align) (-(x) & ((align) - 1)) #define P2NPHASE_TYPED(x, align, type) \ (-(type)(x) & ((type)(align) - 1)) #define ISP2(x) (((x) & ((x) - 1)) == 0) #define IS_P2ALIGNED(v, a) ((((uintptr_t)(v)) & ((uintptr_t)(a) - 1)) == 0) /* * 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) & -(type)(align))) #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 #ifdef __cplusplus } #endif #endif /* _SPL_SYSMACROS_H */