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
21 #define FIO_HAVE_HUGETLB
22 #define FIO_HAVE_SYSLET
24 #define OS_MAP_ANON (MAP_ANONYMOUS)
26 typedef cpu_set_t os_cpu_mask_t;
27 typedef struct drand48_data os_random_state_t;
30 * we want fadvise64 really, but it's so tangled... later
32 #define fadvise(fd, off, len, advice) \
33 posix_fadvise((fd), (off_t)(off), (len), (advice))
35 #define fio_setaffinity(td) \
36 sched_setaffinity((td)->pid, sizeof((td)->cpumask), &(td)->cpumask)
37 #define fio_getaffinity(pid, ptr) \
38 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
40 static inline int ioprio_set(int which, int who, int ioprio)
42 return syscall(__NR_ioprio_set, which, who, ioprio);
46 * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
50 #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */
51 #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
52 /* we may still block on the fd we splice */
53 /* from/to, of course */
54 #define SPLICE_F_MORE (0x04) /* expect more data */
55 #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */
57 static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
58 size_t len, unsigned long flags)
60 return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
63 static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
65 return syscall(__NR_sys_tee, fdin, fdout, len, flags);
68 static inline int vmsplice(int fd, const struct iovec *iov,
69 unsigned long nr_segs, unsigned int flags)
71 return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
75 #define SPLICE_DEF_SIZE (64*1024)
80 static inline long async_register(void *uah, unsigned int len)
82 return syscall(__NR_async_register, uah, len);
85 static inline void *async_exec(void *data)
87 return (void *) syscall(__NR_async_exec, data);
90 static inline long async_wait(unsigned long min_events)
92 return syscall(__NR_async_wait, min_events);
95 static inline long async_unregister(void *uah, unsigned int len)
97 return syscall(__NR_async_unregister, uah, len);
100 static inline long umem_add(unsigned long *uptr, unsigned long inc)
102 return syscall(__NR_umem_add, uptr, inc);
106 IOPRIO_WHO_PROCESS = 1,
111 #define IOPRIO_CLASS_SHIFT 13
114 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
118 #define BLKFLSBUF _IO(0x12,97)
121 static inline int blockdev_invalidate_cache(int fd)
123 if (!ioctl(fd, BLKFLSBUF))
129 static inline int blockdev_size(int fd, unsigned long long *bytes)
131 if (!ioctl(fd, BLKGETSIZE64, bytes))
137 static inline unsigned long long os_phys_mem(void)
139 long pagesize, pages;
141 pagesize = sysconf(_SC_PAGESIZE);
142 pages = sysconf(_SC_PHYS_PAGES);
143 if (pages == -1 || pagesize == -1)
146 return (unsigned long long) pages * (unsigned long long) pagesize;
149 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
154 static inline long os_random_long(os_random_state_t *rs)
162 static inline double os_random_double(os_random_state_t *rs)