6 #include <sys/syscall.h>
9 #include <linux/unistd.h>
11 #define FIO_HAVE_LIBAIO
12 #define FIO_HAVE_POSIXAIO
13 #define FIO_HAVE_FADVISE
14 #define FIO_HAVE_CPU_AFFINITY
15 #define FIO_HAVE_DISK_UTIL
17 #define FIO_HAVE_IOPRIO
18 #define FIO_HAVE_SPLICE
19 #define FIO_HAVE_IOSCHED_SWITCH
20 #define FIO_HAVE_ODIRECT
22 #define OS_MAP_ANON (MAP_ANONYMOUS)
24 typedef cpu_set_t os_cpu_mask_t;
25 typedef struct drand48_data os_random_state_t;
28 * we want fadvise64 really, but it's so tangled... later
30 #define fadvise(fd, off, len, advice) \
31 posix_fadvise((fd), (off_t)(off), (len), (advice))
33 #define fio_setaffinity(td) \
34 sched_setaffinity((td)->pid, sizeof((td)->cpumask), &(td)->cpumask)
35 #define fio_getaffinity(pid, ptr) \
36 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
38 static inline int ioprio_set(int which, int who, int ioprio)
40 return syscall(__NR_ioprio_set, which, who, ioprio);
44 * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
48 #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */
49 #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
50 /* we may still block on the fd we splice */
51 /* from/to, of course */
52 #define SPLICE_F_MORE (0x04) /* expect more data */
53 #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */
55 static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
56 size_t len, unsigned long flags)
58 return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
61 static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
63 return syscall(__NR_sys_tee, fdin, fdout, len, flags);
66 static inline int vmsplice(int fd, const struct iovec *iov,
67 unsigned long nr_segs, unsigned int flags)
69 return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
73 #define SPLICE_DEF_SIZE (64*1024)
76 IOPRIO_WHO_PROCESS = 1,
81 #define IOPRIO_CLASS_SHIFT 13
84 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
87 static inline int blockdev_size(int fd, unsigned long long *bytes)
89 if (!ioctl(fd, BLKGETSIZE64, bytes))
95 static inline unsigned long long os_phys_mem(void)
99 pagesize = sysconf(_SC_PAGESIZE);
100 pages = sysconf(_SC_PHYS_PAGES);
101 if (pages == -1 || pagesize == -1)
104 return (unsigned long long) pages * (unsigned long long) pagesize;
107 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
112 static inline long os_random_long(os_random_state_t *rs)
120 static inline double os_random_double(os_random_state_t *rs)