6 #include <sys/syscall.h>
12 #include <linux/unistd.h>
13 #include <linux/raw.h>
14 #include <linux/major.h>
18 #define FIO_HAVE_LIBAIO
19 #define FIO_HAVE_POSIXAIO
20 #define FIO_HAVE_FADVISE
21 #define FIO_HAVE_CPU_AFFINITY
22 #define FIO_HAVE_DISK_UTIL
24 #define FIO_HAVE_IOPRIO
25 #define FIO_HAVE_SPLICE
26 #define FIO_HAVE_IOSCHED_SWITCH
27 #define FIO_HAVE_ODIRECT
28 #define FIO_HAVE_HUGETLB
29 #define FIO_HAVE_RAWBIND
30 #define FIO_HAVE_BLKTRACE
31 #define FIO_HAVE_STRSEP
32 #define FIO_HAVE_FALLOCATE
33 #define FIO_HAVE_POSIXAIO_FSYNC
34 #define FIO_HAVE_PSHARED_MUTEX
35 #define FIO_HAVE_CL_SIZE
36 #define FIO_HAVE_CGROUPS
37 #define FIO_HAVE_FDATASYNC
38 #define FIO_HAVE_SYNC_FILE_RANGE
39 #define FIO_HAVE_FS_STAT
41 #define OS_MAP_ANON MAP_ANONYMOUS
43 #ifndef CLOCK_MONOTONIC
44 #define CLOCK_MONOTONIC 1
47 typedef cpu_set_t os_cpu_mask_t;
49 typedef struct drand48_data os_random_state_t;
52 * we want fadvise64 really, but it's so tangled... later
54 #ifdef FIO_HAVE_FADVISE
55 #define fadvise(fd, off, len, advice) \
56 posix_fadvise((fd), (off_t)(off), (len), (advice))
60 * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want
61 * the affinity helpers to work.
64 #define fio_setaffinity(pid, cpumask) \
65 sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
66 #define fio_getaffinity(pid, ptr) \
67 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
69 #define fio_setaffinity(pid, cpumask) \
70 sched_setaffinity((pid), &(cpumask))
71 #define fio_getaffinity(pid, ptr) \
72 sched_getaffinity((pid), (ptr))
75 #define fio_cpu_clear(mask, cpu) CPU_CLR((cpu), (mask))
76 #define fio_cpu_set(mask, cpu) CPU_SET((cpu), (mask))
78 static inline int fio_cpuset_init(os_cpu_mask_t *mask)
84 static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
89 #define FIO_MAX_CPUS CPU_SETSIZE
91 static inline int ioprio_set(int which, int who, int ioprio)
93 return syscall(__NR_ioprio_set, which, who, ioprio);
97 * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
100 #ifndef SPLICE_F_MOVE
101 #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */
102 #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
103 /* we may still block on the fd we splice */
104 /* from/to, of course */
105 #define SPLICE_F_MORE (0x04) /* expect more data */
106 #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */
108 static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
109 size_t len, unsigned int flags)
111 return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
114 static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
116 return syscall(__NR_sys_tee, fdin, fdout, len, flags);
119 static inline int vmsplice(int fd, const struct iovec *iov,
120 unsigned long nr_segs, unsigned int flags)
122 return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
126 #define SPLICE_DEF_SIZE (64*1024)
128 #ifdef FIO_HAVE_SYSLET
131 struct async_head_user;
136 static inline struct syslet_uatom *
137 async_exec(struct syslet_uatom *atom, struct async_head_user *ahu)
139 return (struct syslet_uatom *) syscall(__NR_async_exec, atom, ahu);
143 async_wait(unsigned long min_wait_events, unsigned long user_ring_idx,
144 struct async_head_user *ahu)
146 return syscall(__NR_async_wait, min_wait_events,
150 static inline long async_thread(void *event, struct async_head_user *ahu)
152 return syscall(__NR_async_thread, event, ahu);
155 static inline long umem_add(unsigned long *uptr, unsigned long inc)
157 return syscall(__NR_umem_add, uptr, inc);
159 #endif /* FIO_HAVE_SYSLET */
169 IOPRIO_WHO_PROCESS = 1,
174 #define IOPRIO_BITS 16
175 #define IOPRIO_CLASS_SHIFT 13
178 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
182 #define BLKFLSBUF _IO(0x12,97)
185 static inline int blockdev_invalidate_cache(int fd)
187 return ioctl(fd, BLKFLSBUF);
190 static inline int blockdev_size(int fd, unsigned long long *bytes)
192 if (!ioctl(fd, BLKGETSIZE64, bytes))
198 static inline unsigned long long os_phys_mem(void)
200 long pagesize, pages;
202 pagesize = sysconf(_SC_PAGESIZE);
203 pages = sysconf(_SC_PHYS_PAGES);
204 if (pages == -1 || pagesize == -1)
207 return (unsigned long long) pages * (unsigned long long) pagesize;
210 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
215 static inline long os_random_long(os_random_state_t *rs)
223 static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
225 struct raw_config_request rq;
228 if (major(dev) != RAW_MAJOR)
232 * we should be able to find /dev/rawctl or /dev/raw/rawctl
234 fd = open("/dev/rawctl", O_RDONLY);
236 fd = open("/dev/raw/rawctl", O_RDONLY);
241 rq.raw_minor = minor(dev);
242 if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
248 *majdev = rq.block_major;
249 *mindev = rq.block_minor;
254 #define FIO_O_NOATIME O_NOATIME
256 #define FIO_O_NOATIME 0
260 #define FIO_MADV_FREE MADV_REMOVE
263 #define CACHE_LINE_FILE \
264 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
266 static inline int arch_cache_line_size(void)
271 fd = open(CACHE_LINE_FILE, O_RDONLY);
275 ret = read(fd, size, sizeof(size));
285 static inline unsigned long long get_fs_size(const char *path)
287 unsigned long long ret;
290 if (statfs(path, &s) < 0)
294 ret *= (unsigned long long) s.f_bfree;