-#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 <fcntl.h>
-#include <linux/unistd.h>
-#include <linux/raw.h>
-#include <linux/major.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 FIO_HAVE_IOSCHED_SWITCH
-#define FIO_HAVE_ODIRECT
-#define FIO_HAVE_HUGETLB
-#define FIO_HAVE_RAWBIND
-
-#define OS_MAP_ANON (MAP_ANONYMOUS)
-
-typedef cpu_set_t os_cpu_mask_t;
-typedef struct drand48_data os_random_state_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)->o.cpumask), &(td)->o.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);
-}
-
-/*
- * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
- * aren't either.
- */
-#ifndef SPLICE_F_MOVE
-#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 */
-
-static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
- size_t len, unsigned long flags)
-{
- return syscall(__NR_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 syscall(__NR_sys_tee, fdin, fdout, len, flags);
-}
-
-static inline int vmsplice(int fd, const struct iovec *iov,
- unsigned long nr_segs, unsigned int flags)
-{
- return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
-}
-#endif
-
-#define SPLICE_DEF_SIZE (64*1024)
-
-#ifdef FIO_HAVE_SYSLET
-
-struct syslet_uatom;
-struct async_head_user;
-
-/*
- * syslet stuff
- */
-static inline struct syslet_uatom *
-async_exec(struct syslet_uatom *atom, struct async_head_user *ahu)
-{
- return (void *) syscall(__NR_async_exec, atom, ahu);
-}
-
-static inline long
-async_wait(unsigned long min_wait_events, unsigned long user_ring_idx,
- struct async_head_user *ahu)
-{
- return syscall(__NR_async_wait, min_wait_events,
- user_ring_idx, ahu);
-}
-
-static inline long async_thread(void *event, struct async_head_user *ahu)
-{
- return syscall(__NR_async_thread, event, ahu);
-}
-
-static inline long umem_add(unsigned long *uptr, unsigned long inc)
-{
- return syscall(__NR_umem_add, uptr, inc);
-}
-#endif /* FIO_HAVE_SYSLET */
-
-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
-
-#ifndef BLKFLSBUF
-#define BLKFLSBUF _IO(0x12,97)
-#endif
-
-static inline int blockdev_invalidate_cache(int fd)
-{
- return ioctl(fd, BLKFLSBUF);
-}
-
-static inline int blockdev_size(int fd, unsigned long long *bytes)
-{
- if (!ioctl(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 void os_random_seed(unsigned long seed, os_random_state_t *rs)
-{
- srand48_r(seed, rs);
-}
-
-static inline long os_random_long(os_random_state_t *rs)
-{
- long val;
-
- lrand48_r(rs, &val);
- return val;
-}
-
-static inline double os_random_double(os_random_state_t *rs)
-{
- double val;
-
- drand48_r(rs, &val);
- return val;
-}
-
-static inline void fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
-{
- struct raw_config_request rq;
- int fd;
-
- if (major(dev) != RAW_MAJOR)
- return;
-
- /*
- * 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;
- }
-
- rq.raw_minor = minor(dev);
- if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
- close(fd);
- return;
- }
-
- close(fd);
- *majdev = rq.block_major;
- *mindev = rq.block_minor;
-}
-
-#endif
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