| #ifndef FIO_OS_LINUX_H |
| #define FIO_OS_LINUX_H |
| |
| #include <sys/ioctl.h> |
| #include <sys/uio.h> |
| #include <sys/syscall.h> |
| #include <unistd.h> |
| #include <asm/unistd.h> |
| |
| #define FIO_HAVE_LIBAIO |
| #define FIO_HAVE_POSIXAIO |
| #define FIO_HAVE_FADVISE |
| #define FIO_HAVE_CPU_AFFINITY |
| #define FIO_HAVE_DISK_UTIL |
| #define FIO_HAVE_SGIO |
| #define FIO_HAVE_IOPRIO |
| #define FIO_HAVE_SPLICE |
| |
| #define OS_MAP_ANON (MAP_ANONYMOUS) |
| |
| typedef cpu_set_t os_cpu_mask_t; |
| |
| /* |
| * we want fadvise64 really, but it's so tangled... later |
| */ |
| #define fadvise(fd, off, len, advice) \ |
| posix_fadvise((fd), (off_t)(off), (len), (advice)) |
| |
| #define fio_setaffinity(td) \ |
| sched_setaffinity((td)->pid, sizeof((td)->cpumask), &(td)->cpumask) |
| #define fio_getaffinity(pid, ptr) \ |
| sched_getaffinity((pid), sizeof(cpu_set_t), (ptr)) |
| |
| static inline int ioprio_set(int which, int who, int ioprio) |
| { |
| return syscall(__NR_ioprio_set, which, who, ioprio); |
| } |
| |
| static _syscall6(int, sys_splice, int, fdin, loff_t *, off_in, int, fdout, loff_t *, off_out, size_t, len, unsigned int, flags); |
| static _syscall4(int, sys_vmsplice, int, fd, const struct iovec *, iov, unsigned long, nr_segs, unsigned int, flags); |
| static _syscall4(int, sys_tee, int, fdin, int, fdout, size_t, len, unsigned int, flags); |
| |
| static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out, |
| size_t len, unsigned long flags) |
| { |
| return sys_splice(fdin, off_in, fdout, off_out, len, flags); |
| } |
| |
| static inline int tee(int fdin, int fdout, size_t len, unsigned int flags) |
| { |
| return sys_tee(fdin, fdout, len, flags); |
| } |
| |
| static inline int vmsplice(int fd, const struct iovec *iov, |
| unsigned long nr_segs, unsigned int flags) |
| { |
| return sys_vmsplice(fd, iov, nr_segs, flags); |
| } |
| |
| #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */ |
| #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */ |
| /* we may still block on the fd we splice */ |
| /* from/to, of course */ |
| #define SPLICE_F_MORE (0x04) /* expect more data */ |
| #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */ |
| |
| #define SPLICE_DEF_SIZE (64*1024) |
| |
| enum { |
| IOPRIO_WHO_PROCESS = 1, |
| IOPRIO_WHO_PGRP, |
| IOPRIO_WHO_USER, |
| }; |
| |
| #define IOPRIO_CLASS_SHIFT 13 |
| |
| #ifndef BLKGETSIZE64 |
| #define BLKGETSIZE64 _IOR(0x12,114,size_t) |
| #endif |
| |
| static inline int blockdev_size(int fd, unsigned long long *bytes) |
| { |
| if (!ioctl(fd, BLKGETSIZE64, bytes)) |
| return 0; |
| |
| return errno; |
| } |
| |
| #endif |