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
24 * Only for x86 currently
27 #define FIO_HAVE_SYSLET
30 #define OS_MAP_ANON (MAP_ANONYMOUS)
32 typedef cpu_set_t os_cpu_mask_t;
33 typedef struct drand48_data os_random_state_t;
36 * we want fadvise64 really, but it's so tangled... later
38 #define fadvise(fd, off, len, advice) \
39 posix_fadvise((fd), (off_t)(off), (len), (advice))
41 #define fio_setaffinity(td) \
42 sched_setaffinity((td)->pid, sizeof((td)->cpumask), &(td)->cpumask)
43 #define fio_getaffinity(pid, ptr) \
44 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
46 static inline int ioprio_set(int which, int who, int ioprio)
48 return syscall(__NR_ioprio_set, which, who, ioprio);
52 * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
56 #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */
57 #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
58 /* we may still block on the fd we splice */
59 /* from/to, of course */
60 #define SPLICE_F_MORE (0x04) /* expect more data */
61 #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */
63 static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
64 size_t len, unsigned long flags)
66 return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
69 static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
71 return syscall(__NR_sys_tee, fdin, fdout, len, flags);
74 static inline int vmsplice(int fd, const struct iovec *iov,
75 unsigned long nr_segs, unsigned int flags)
77 return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
81 #define SPLICE_DEF_SIZE (64*1024)
83 #ifdef FIO_HAVE_SYSLET
86 struct async_head_user;
91 static inline struct syslet_uatom *
92 async_exec(struct syslet_uatom *atom, struct async_head_user *ahu)
94 return (void *) syscall(__NR_async_exec, atom, ahu);
98 async_wait(unsigned long min_wait_events, unsigned long user_ring_idx,
99 struct async_head_user *ahu)
101 return syscall(__NR_async_wait, min_wait_events,
105 static inline long async_thread(void)
107 return syscall(__NR_async_thread);
110 static inline long umem_add(unsigned long *uptr, unsigned long inc)
112 return syscall(__NR_umem_add, uptr, inc);
114 #endif /* FIO_HAVE_SYSLET */
117 IOPRIO_WHO_PROCESS = 1,
122 #define IOPRIO_CLASS_SHIFT 13
125 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
129 #define BLKFLSBUF _IO(0x12,97)
132 static inline int blockdev_invalidate_cache(int fd)
134 if (!ioctl(fd, BLKFLSBUF))
140 static inline int blockdev_size(int fd, unsigned long long *bytes)
142 if (!ioctl(fd, BLKGETSIZE64, bytes))
148 static inline unsigned long long os_phys_mem(void)
150 long pagesize, pages;
152 pagesize = sysconf(_SC_PAGESIZE);
153 pages = sysconf(_SC_PHYS_PAGES);
154 if (pages == -1 || pagesize == -1)
157 return (unsigned long long) pages * (unsigned long long) pagesize;
160 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
165 static inline long os_random_long(os_random_state_t *rs)
173 static inline double os_random_double(os_random_state_t *rs)