362 lines
7.4 KiB
C
362 lines
7.4 KiB
C
#ifndef FIO_OS_LINUX_H
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#define FIO_OS_LINUX_H
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#define FIO_OS os_linux
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#include <sys/ioctl.h>
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#include <sys/uio.h>
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#include <sys/syscall.h>
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#include <sys/sysmacros.h>
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#include <sys/vfs.h>
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#include <sys/mman.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sched.h>
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#include <linux/unistd.h>
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#include <linux/raw.h>
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#include <linux/major.h>
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#include "./os-linux-syscall.h"
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#include "binject.h"
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#include "../file.h"
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#ifndef __has_builtin // Optional of course.
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#define __has_builtin(x) 0 // Compatibility with non-clang compilers.
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#endif
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#define FIO_HAVE_CPU_AFFINITY
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#define FIO_HAVE_DISK_UTIL
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#define FIO_HAVE_SGIO
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#define FIO_HAVE_IOPRIO
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#define FIO_HAVE_IOPRIO_CLASS
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#define FIO_HAVE_IOSCHED_SWITCH
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#define FIO_HAVE_ODIRECT
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#define FIO_HAVE_HUGETLB
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#define FIO_HAVE_RAWBIND
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#define FIO_HAVE_BLKTRACE
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#define FIO_HAVE_CL_SIZE
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#define FIO_HAVE_CGROUPS
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#define FIO_HAVE_FS_STAT
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#define FIO_HAVE_TRIM
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#define FIO_HAVE_BINJECT
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#define FIO_HAVE_GETTID
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#define FIO_USE_GENERIC_INIT_RANDOM_STATE
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#define FIO_HAVE_PWRITEV2
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#define FIO_HAVE_SHM_ATTACH_REMOVED
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#ifdef MAP_HUGETLB
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#define FIO_HAVE_MMAP_HUGE
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#endif
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#define OS_MAP_ANON MAP_ANONYMOUS
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typedef cpu_set_t os_cpu_mask_t;
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typedef struct drand48_data os_random_state_t;
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#ifdef CONFIG_3ARG_AFFINITY
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#define fio_setaffinity(pid, cpumask) \
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sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
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#define fio_getaffinity(pid, ptr) \
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sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
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#elif defined(CONFIG_2ARG_AFFINITY)
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#define fio_setaffinity(pid, cpumask) \
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sched_setaffinity((pid), &(cpumask))
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#define fio_getaffinity(pid, ptr) \
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sched_getaffinity((pid), (ptr))
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#endif
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#define fio_cpu_clear(mask, cpu) (void) CPU_CLR((cpu), (mask))
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#define fio_cpu_set(mask, cpu) (void) CPU_SET((cpu), (mask))
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#define fio_cpu_isset(mask, cpu) CPU_ISSET((cpu), (mask))
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#define fio_cpu_count(mask) CPU_COUNT((mask))
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static inline int fio_cpuset_init(os_cpu_mask_t *mask)
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{
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CPU_ZERO(mask);
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return 0;
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}
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static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
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{
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return 0;
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}
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#define FIO_MAX_CPUS CPU_SETSIZE
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enum {
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IOPRIO_CLASS_NONE,
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IOPRIO_CLASS_RT,
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IOPRIO_CLASS_BE,
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IOPRIO_CLASS_IDLE,
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};
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enum {
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IOPRIO_WHO_PROCESS = 1,
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IOPRIO_WHO_PGRP,
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IOPRIO_WHO_USER,
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};
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#define IOPRIO_BITS 16
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#define IOPRIO_CLASS_SHIFT 13
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#define IOPRIO_MIN_PRIO 0 /* highest priority */
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#define IOPRIO_MAX_PRIO 7 /* lowest priority */
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#define IOPRIO_MIN_PRIO_CLASS 0
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#define IOPRIO_MAX_PRIO_CLASS 3
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static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
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{
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/*
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* If no class is set, assume BE
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*/
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if (!ioprio_class)
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ioprio_class = IOPRIO_CLASS_BE;
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ioprio |= ioprio_class << IOPRIO_CLASS_SHIFT;
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return syscall(__NR_ioprio_set, which, who, ioprio);
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}
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static inline int gettid(void)
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{
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return syscall(__NR_gettid);
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}
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#define SPLICE_DEF_SIZE (64*1024)
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#ifndef BLKGETSIZE64
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#define BLKGETSIZE64 _IOR(0x12,114,size_t)
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#endif
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#ifndef BLKFLSBUF
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#define BLKFLSBUF _IO(0x12,97)
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#endif
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#ifndef BLKDISCARD
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#define BLKDISCARD _IO(0x12,119)
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#endif
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static inline int blockdev_invalidate_cache(struct fio_file *f)
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{
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return ioctl(f->fd, BLKFLSBUF);
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}
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static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
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{
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if (!ioctl(f->fd, BLKGETSIZE64, bytes))
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return 0;
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return errno;
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}
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static inline unsigned long long os_phys_mem(void)
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{
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long pagesize, pages;
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pagesize = sysconf(_SC_PAGESIZE);
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pages = sysconf(_SC_PHYS_PAGES);
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if (pages == -1 || pagesize == -1)
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return 0;
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return (unsigned long long) pages * (unsigned long long) pagesize;
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}
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static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
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{
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srand48_r(seed, rs);
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}
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static inline long os_random_long(os_random_state_t *rs)
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{
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long val;
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lrand48_r(rs, &val);
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return val;
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}
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static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
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{
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struct raw_config_request rq;
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int fd;
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if (major(dev) != RAW_MAJOR)
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return 1;
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/*
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* we should be able to find /dev/rawctl or /dev/raw/rawctl
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*/
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fd = open("/dev/rawctl", O_RDONLY);
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if (fd < 0) {
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fd = open("/dev/raw/rawctl", O_RDONLY);
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if (fd < 0)
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return 1;
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}
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rq.raw_minor = minor(dev);
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if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
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close(fd);
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return 1;
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}
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close(fd);
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*majdev = rq.block_major;
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*mindev = rq.block_minor;
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return 0;
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}
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#ifdef O_NOATIME
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#define FIO_O_NOATIME O_NOATIME
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#else
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#define FIO_O_NOATIME 0
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#endif
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#ifdef O_ATOMIC
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#define OS_O_ATOMIC O_ATOMIC
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#else
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#define OS_O_ATOMIC 040000000
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#endif
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#ifdef MADV_REMOVE
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#define FIO_MADV_FREE MADV_REMOVE
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#endif
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/* Check for GCC or Clang byte swap intrinsics */
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#if (__has_builtin(__builtin_bswap16) && __has_builtin(__builtin_bswap32) \
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&& __has_builtin(__builtin_bswap64)) || (__GNUC__ > 4 \
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|| (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) /* fio_swapN */
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#define fio_swap16(x) __builtin_bswap16(x)
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#define fio_swap32(x) __builtin_bswap32(x)
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#define fio_swap64(x) __builtin_bswap64(x)
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#else
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#include <byteswap.h>
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#define fio_swap16(x) bswap_16(x)
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#define fio_swap32(x) bswap_32(x)
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#define fio_swap64(x) bswap_64(x)
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#endif /* fio_swapN */
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#define CACHE_LINE_FILE \
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"/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
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static inline int arch_cache_line_size(void)
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{
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char size[32];
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int fd, ret;
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fd = open(CACHE_LINE_FILE, O_RDONLY);
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if (fd < 0)
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return -1;
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ret = read(fd, size, sizeof(size));
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close(fd);
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if (ret <= 0)
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return -1;
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else
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return atoi(size);
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}
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static inline unsigned long long get_fs_free_size(const char *path)
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{
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unsigned long long ret;
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struct statfs s;
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if (statfs(path, &s) < 0)
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return -1ULL;
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ret = s.f_bsize;
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ret *= (unsigned long long) s.f_bfree;
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return ret;
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}
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static inline int os_trim(int fd, unsigned long long start,
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unsigned long long len)
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{
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uint64_t range[2];
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range[0] = start;
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range[1] = len;
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if (!ioctl(fd, BLKDISCARD, range))
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return 0;
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return errno;
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}
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#ifdef CONFIG_SCHED_IDLE
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static inline int fio_set_sched_idle(void)
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{
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struct sched_param p = { .sched_priority = 0, };
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return sched_setscheduler(gettid(), SCHED_IDLE, &p);
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}
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#endif
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#ifndef POSIX_FADV_STREAMID
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#define POSIX_FADV_STREAMID 8
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#endif
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#define FIO_HAVE_STREAMID
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#ifndef RWF_HIPRI
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#define RWF_HIPRI 0x00000001
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#endif
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#ifndef RWF_DSYNC
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#define RWF_DSYNC 0x00000002
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#endif
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#ifndef RWF_SYNC
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#define RWF_SYNC 0x00000004
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#endif
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#ifndef CONFIG_PWRITEV2
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#ifdef __NR_preadv2
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static inline void make_pos_h_l(unsigned long *pos_h, unsigned long *pos_l,
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off_t offset)
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{
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#if BITS_PER_LONG == 64
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*pos_l = offset;
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*pos_h = 0;
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#else
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*pos_l = offset & 0xffffffff;
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*pos_h = ((uint64_t) offset) >> 32;
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#endif
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}
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static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt,
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off_t offset, unsigned int flags)
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{
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unsigned long pos_l, pos_h;
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make_pos_h_l(&pos_h, &pos_l, offset);
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return syscall(__NR_preadv2, fd, iov, iovcnt, pos_l, pos_h, flags);
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}
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static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
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off_t offset, unsigned int flags)
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{
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unsigned long pos_l, pos_h;
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make_pos_h_l(&pos_h, &pos_l, offset);
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return syscall(__NR_pwritev2, fd, iov, iovcnt, pos_l, pos_h, flags);
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}
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#else
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static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt,
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off_t offset, unsigned int flags)
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{
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errno = ENOSYS;
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return -1;
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}
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static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
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off_t offset, unsigned int flags)
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{
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errno = ENOSYS;
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return -1;
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}
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#endif /* __NR_preadv2 */
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#endif /* CONFIG_PWRITEV2 */
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static inline int shm_attach_to_open_removed(void)
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{
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return 1;
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}
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#endif
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