blob: ba58bf7d962380413f15441d259eea8573f3c26e [file] [log] [blame]
#ifndef FIO_OS_LINUX_H
#define FIO_OS_LINUX_H
#define FIO_OS os_linux
#include <sys/ioctl.h>
#include <sys/uio.h>
#include <sys/syscall.h>
#include <sys/sysmacros.h>
#include <sys/vfs.h>
#include <sys/mman.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sched.h>
#include <linux/unistd.h>
#include <linux/raw.h>
#include <linux/major.h>
#include <linux/fs.h>
#include <scsi/sg.h>
#ifdef ARCH_HAVE_CRC_CRYPTO
#include <sys/auxv.h>
#ifndef HWCAP_CRC32
#define HWCAP_CRC32 (1 << 7)
#endif /* HWCAP_CRC32 */
#endif /* ARCH_HAVE_CRC_CRYPTO */
#include "./os-linux-syscall.h"
#include "../file.h"
#ifndef __has_builtin // Optional of course.
#define __has_builtin(x) 0 // Compatibility with non-clang compilers.
#endif
#define FIO_HAVE_CPU_AFFINITY
#define FIO_HAVE_DISK_UTIL
#define FIO_HAVE_SGIO
#define FIO_HAVE_IOPRIO
#define FIO_HAVE_IOPRIO_CLASS
#define FIO_HAVE_IOSCHED_SWITCH
#define FIO_HAVE_ODIRECT
#define FIO_HAVE_HUGETLB
#define FIO_HAVE_RAWBIND
#define FIO_HAVE_BLKTRACE
#define FIO_HAVE_CL_SIZE
#define FIO_HAVE_CGROUPS
#define FIO_HAVE_FS_STAT
#define FIO_HAVE_TRIM
#define FIO_HAVE_GETTID
#define FIO_USE_GENERIC_INIT_RANDOM_STATE
#define FIO_HAVE_PWRITEV2
#define FIO_HAVE_SHM_ATTACH_REMOVED
#ifdef MAP_HUGETLB
#define FIO_HAVE_MMAP_HUGE
#endif
#define OS_MAP_ANON MAP_ANONYMOUS
typedef cpu_set_t os_cpu_mask_t;
#ifdef CONFIG_3ARG_AFFINITY
#define fio_setaffinity(pid, cpumask) \
sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
#define fio_getaffinity(pid, ptr) \
sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
#elif defined(CONFIG_2ARG_AFFINITY)
#define fio_setaffinity(pid, cpumask) \
sched_setaffinity((pid), &(cpumask))
#define fio_getaffinity(pid, ptr) \
sched_getaffinity((pid), (ptr))
#endif
#define fio_cpu_clear(mask, cpu) (void) CPU_CLR((cpu), (mask))
#define fio_cpu_set(mask, cpu) (void) CPU_SET((cpu), (mask))
#define fio_cpu_isset(mask, cpu) (CPU_ISSET((cpu), (mask)) != 0)
#define fio_cpu_count(mask) CPU_COUNT((mask))
static inline int fio_cpuset_init(os_cpu_mask_t *mask)
{
CPU_ZERO(mask);
return 0;
}
static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
{
return 0;
}
#define FIO_MAX_CPUS CPU_SETSIZE
enum {
IOPRIO_CLASS_NONE,
IOPRIO_CLASS_RT,
IOPRIO_CLASS_BE,
IOPRIO_CLASS_IDLE,
};
enum {
IOPRIO_WHO_PROCESS = 1,
IOPRIO_WHO_PGRP,
IOPRIO_WHO_USER,
};
#define IOPRIO_BITS 16
#define IOPRIO_CLASS_SHIFT 13
#define IOPRIO_MIN_PRIO 0 /* highest priority */
#define IOPRIO_MAX_PRIO 7 /* lowest priority */
#define IOPRIO_MIN_PRIO_CLASS 0
#define IOPRIO_MAX_PRIO_CLASS 3
static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
{
/*
* If no class is set, assume BE
*/
if (!ioprio_class)
ioprio_class = IOPRIO_CLASS_BE;
ioprio |= ioprio_class << IOPRIO_CLASS_SHIFT;
return syscall(__NR_ioprio_set, which, who, ioprio);
}
static inline int gettid(void)
{
return syscall(__NR_gettid);
}
#define SPLICE_DEF_SIZE (64*1024)
#ifndef BLKGETSIZE64
#define BLKGETSIZE64 _IOR(0x12,114,size_t)
#endif
#ifndef BLKFLSBUF
#define BLKFLSBUF _IO(0x12,97)
#endif
#ifndef BLKDISCARD
#define BLKDISCARD _IO(0x12,119)
#endif
static inline int blockdev_invalidate_cache(struct fio_file *f)
{
return ioctl(f->fd, BLKFLSBUF);
}
static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
{
if (!ioctl(f->fd, BLKGETSIZE64, bytes))
return 0;
return errno;
}
static inline unsigned long long os_phys_mem(void)
{
long pagesize, pages;
pagesize = sysconf(_SC_PAGESIZE);
pages = sysconf(_SC_PHYS_PAGES);
if (pages == -1 || pagesize == -1)
return 0;
return (unsigned long long) pages * (unsigned long long) pagesize;
}
static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
{
struct raw_config_request rq;
int fd;
if (major(dev) != RAW_MAJOR)
return 1;
/*
* we should be able to find /dev/rawctl or /dev/raw/rawctl
*/
fd = open("/dev/rawctl", O_RDONLY);
if (fd < 0) {
fd = open("/dev/raw/rawctl", O_RDONLY);
if (fd < 0)
return 1;
}
rq.raw_minor = minor(dev);
if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
close(fd);
return 1;
}
close(fd);
*majdev = rq.block_major;
*mindev = rq.block_minor;
return 0;
}
#ifdef O_NOATIME
#define FIO_O_NOATIME O_NOATIME
#else
#define FIO_O_NOATIME 0
#endif
#ifdef O_ATOMIC
#define OS_O_ATOMIC O_ATOMIC
#else
#define OS_O_ATOMIC 040000000
#endif
#ifdef MADV_REMOVE
#define FIO_MADV_FREE MADV_REMOVE
#endif
/* Check for GCC or Clang byte swap intrinsics */
#if (__has_builtin(__builtin_bswap16) && __has_builtin(__builtin_bswap32) \
&& __has_builtin(__builtin_bswap64)) || (__GNUC__ > 4 \
|| (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) /* fio_swapN */
#define fio_swap16(x) __builtin_bswap16(x)
#define fio_swap32(x) __builtin_bswap32(x)
#define fio_swap64(x) __builtin_bswap64(x)
#else
#include <byteswap.h>
#define fio_swap16(x) bswap_16(x)
#define fio_swap32(x) bswap_32(x)
#define fio_swap64(x) bswap_64(x)
#endif /* fio_swapN */
#define CACHE_LINE_FILE \
"/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
static inline int arch_cache_line_size(void)
{
char size[32];
int fd, ret;
fd = open(CACHE_LINE_FILE, O_RDONLY);
if (fd < 0)
return -1;
ret = read(fd, size, sizeof(size));
close(fd);
if (ret <= 0)
return -1;
else
return atoi(size);
}
#ifdef __powerpc64__
#define FIO_HAVE_CPU_ONLINE_SYSCONF
static inline unsigned int cpus_online(void)
{
return sysconf(_SC_NPROCESSORS_CONF);
}
#endif
static inline unsigned long long get_fs_free_size(const char *path)
{
unsigned long long ret;
struct statfs s;
if (statfs(path, &s) < 0)
return -1ULL;
ret = s.f_bsize;
ret *= (unsigned long long) s.f_bfree;
return ret;
}
static inline int os_trim(struct fio_file *f, unsigned long long start,
unsigned long long len)
{
uint64_t range[2];
range[0] = start;
range[1] = len;
if (!ioctl(f->fd, BLKDISCARD, range))
return 0;
return errno;
}
#ifdef CONFIG_SCHED_IDLE
static inline int fio_set_sched_idle(void)
{
struct sched_param p = { .sched_priority = 0, };
return sched_setscheduler(gettid(), SCHED_IDLE, &p);
}
#endif
#ifndef F_GET_RW_HINT
#ifndef F_LINUX_SPECIFIC_BASE
#define F_LINUX_SPECIFIC_BASE 1024
#endif
#define F_GET_RW_HINT (F_LINUX_SPECIFIC_BASE + 11)
#define F_SET_RW_HINT (F_LINUX_SPECIFIC_BASE + 12)
#define F_GET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 13)
#define F_SET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 14)
#endif
#ifndef RWH_WRITE_LIFE_NONE
#define RWH_WRITE_LIFE_NOT_SET 0
#define RWH_WRITE_LIFE_NONE 1
#define RWH_WRITE_LIFE_SHORT 2
#define RWH_WRITE_LIFE_MEDIUM 3
#define RWH_WRITE_LIFE_LONG 4
#define RWH_WRITE_LIFE_EXTREME 5
#endif
#define FIO_HAVE_WRITE_HINT
#ifndef RWF_HIPRI
#define RWF_HIPRI 0x00000001
#endif
#ifndef RWF_DSYNC
#define RWF_DSYNC 0x00000002
#endif
#ifndef RWF_SYNC
#define RWF_SYNC 0x00000004
#endif
#ifndef RWF_WRITE_LIFE_SHIFT
#define RWF_WRITE_LIFE_SHIFT 4
#define RWF_WRITE_LIFE_SHORT (1 << RWF_WRITE_LIFE_SHIFT)
#define RWF_WRITE_LIFE_MEDIUM (2 << RWF_WRITE_LIFE_SHIFT)
#define RWF_WRITE_LIFE_LONG (3 << RWF_WRITE_LIFE_SHIFT)
#define RWF_WRITE_LIFE_EXTREME (4 << RWF_WRITE_LIFE_SHIFT)
#endif
#ifndef CONFIG_PWRITEV2
#ifdef __NR_preadv2
static inline void make_pos_h_l(unsigned long *pos_h, unsigned long *pos_l,
off_t offset)
{
#if BITS_PER_LONG == 64
*pos_l = offset;
*pos_h = 0;
#else
*pos_l = offset & 0xffffffff;
*pos_h = ((uint64_t) offset) >> 32;
#endif
}
static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt,
off_t offset, unsigned int flags)
{
unsigned long pos_l, pos_h;
make_pos_h_l(&pos_h, &pos_l, offset);
return syscall(__NR_preadv2, fd, iov, iovcnt, pos_l, pos_h, flags);
}
static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
off_t offset, unsigned int flags)
{
unsigned long pos_l, pos_h;
make_pos_h_l(&pos_h, &pos_l, offset);
return syscall(__NR_pwritev2, fd, iov, iovcnt, pos_l, pos_h, flags);
}
#else
static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt,
off_t offset, unsigned int flags)
{
errno = ENOSYS;
return -1;
}
static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
off_t offset, unsigned int flags)
{
errno = ENOSYS;
return -1;
}
#endif /* __NR_preadv2 */
#endif /* CONFIG_PWRITEV2 */
static inline int shm_attach_to_open_removed(void)
{
return 1;
}
#ifdef CONFIG_LINUX_FALLOCATE
#define FIO_HAVE_NATIVE_FALLOCATE
static inline bool fio_fallocate(struct fio_file *f, uint64_t offset,
uint64_t len)
{
int ret;
ret = fallocate(f->fd, 0, offset, len);
if (ret == 0)
return true;
/* Work around buggy old glibc versions... */
if (ret > 0)
errno = ret;
return false;
}
#endif
#define FIO_HAVE_CPU_HAS
static inline bool os_cpu_has(cpu_features feature)
{
bool have_feature;
unsigned long fio_unused hwcap;
switch (feature) {
#ifdef ARCH_HAVE_CRC_CRYPTO
case CPU_ARM64_CRC32C:
hwcap = getauxval(AT_HWCAP);
have_feature = (hwcap & HWCAP_CRC32) != 0;
break;
#endif
default:
have_feature = false;
}
return have_feature;
}
#endif