| /* |
| * 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 <behlendorf1@llnl.gov>. |
| * UCRL-CODE-235197 |
| * |
| * This file is part of the SPL, Solaris Porting Layer. |
| * For details, see <http://zfsonlinux.org/>. |
| * |
| * 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 <http://www.gnu.org/licenses/>. |
| */ |
| |
| #ifndef _SPL_SYSMACROS_H |
| #define _SPL_SYSMACROS_H |
| |
| #include <linux/module.h> |
| #include <linux/sched.h> |
| #include <linux/cpumask.h> |
| #include <sys/debug.h> |
| #include <sys/zone.h> |
| #include <sys/signal.h> |
| #include <asm/page.h> |
| |
| #ifdef HAVE_SCHED_RT_HEADER |
| #include <linux/sched/rt.h> |
| #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 <stddef.h> version */ |
| |
| #define offsetof(s, m) ((size_t)(&(((s *)0)->m))) |
| #endif |
| |
| #endif /* _SPL_SYSMACROS_H */ |