6 #include <sys/syscall.h>
9 #include <linux/unistd.h>
10 #include <linux/raw.h>
11 #include <linux/major.h>
13 #define FIO_HAVE_LIBAIO
14 #define FIO_HAVE_POSIXAIO
15 #define FIO_HAVE_FADVISE
16 #define FIO_HAVE_CPU_AFFINITY
17 #define FIO_HAVE_DISK_UTIL
19 #define FIO_HAVE_IOPRIO
20 #define FIO_HAVE_SPLICE
21 #define FIO_HAVE_IOSCHED_SWITCH
22 #define FIO_HAVE_ODIRECT
23 #define FIO_HAVE_HUGETLB
24 #define FIO_HAVE_RAWBIND
25 #define FIO_HAVE_BLKTRACE
27 #define OS_MAP_ANON (MAP_ANONYMOUS)
29 typedef cpu_set_t os_cpu_mask_t;
30 typedef struct drand48_data os_random_state_t;
33 * we want fadvise64 really, but it's so tangled... later
35 #define fadvise(fd, off, len, advice) \
36 posix_fadvise((fd), (off_t)(off), (len), (advice))
39 * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want
40 * the affinity helpers to work.
43 #define fio_setaffinity(td) \
44 sched_setaffinity((td)->pid, sizeof((td)->o.cpumask), &(td)->o.cpumask)
45 #define fio_getaffinity(pid, ptr) \
46 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
48 #define fio_setaffinity(td) \
49 sched_setaffinity((td)->pid, &(td)->o.cpumask)
50 #define fio_getaffinity(pid, ptr) \
51 sched_getaffinity((pid), (ptr))
54 static inline int ioprio_set(int which, int who, int ioprio)
56 return syscall(__NR_ioprio_set, which, who, ioprio);
60 * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
64 #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */
65 #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
66 /* we may still block on the fd we splice */
67 /* from/to, of course */
68 #define SPLICE_F_MORE (0x04) /* expect more data */
69 #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */
71 static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
72 size_t len, unsigned int flags)
74 return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
77 static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
79 return syscall(__NR_sys_tee, fdin, fdout, len, flags);
82 static inline int vmsplice(int fd, const struct iovec *iov,
83 unsigned long nr_segs, unsigned int flags)
85 return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
90 #define SPLICE_F_UNMAP (0x10)
93 #define SPLICE_DEF_SIZE (64*1024)
95 #ifdef FIO_HAVE_SYSLET
98 struct async_head_user;
103 static inline struct syslet_uatom *
104 async_exec(struct syslet_uatom *atom, struct async_head_user *ahu)
106 return (void *) syscall(__NR_async_exec, atom, ahu);
110 async_wait(unsigned long min_wait_events, unsigned long user_ring_idx,
111 struct async_head_user *ahu)
113 return syscall(__NR_async_wait, min_wait_events,
117 static inline long async_thread(void *event, struct async_head_user *ahu)
119 return syscall(__NR_async_thread, event, ahu);
122 static inline long umem_add(unsigned long *uptr, unsigned long inc)
124 return syscall(__NR_umem_add, uptr, inc);
126 #endif /* FIO_HAVE_SYSLET */
136 IOPRIO_WHO_PROCESS = 1,
141 #define IOPRIO_BITS 16
142 #define IOPRIO_CLASS_SHIFT 13
145 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
149 #define BLKFLSBUF _IO(0x12,97)
152 static inline int blockdev_invalidate_cache(int fd)
154 return ioctl(fd, BLKFLSBUF);
157 static inline int blockdev_size(int fd, unsigned long long *bytes)
159 if (!ioctl(fd, BLKGETSIZE64, bytes))
165 static inline unsigned long long os_phys_mem(void)
167 long pagesize, pages;
169 pagesize = sysconf(_SC_PAGESIZE);
170 pages = sysconf(_SC_PHYS_PAGES);
171 if (pages == -1 || pagesize == -1)
174 return (unsigned long long) pages * (unsigned long long) pagesize;
177 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
182 static inline long os_random_long(os_random_state_t *rs)
190 static inline double os_random_double(os_random_state_t *rs)
198 static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
200 struct raw_config_request rq;
203 if (major(dev) != RAW_MAJOR)
207 * we should be able to find /dev/rawctl or /dev/raw/rawctl
209 fd = open("/dev/rawctl", O_RDONLY);
211 fd = open("/dev/raw/rawctl", O_RDONLY);
216 rq.raw_minor = minor(dev);
217 if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
223 *majdev = rq.block_major;
224 *mindev = rq.block_minor;