6 #include <sys/syscall.h>
12 #include <linux/unistd.h>
13 #include <linux/raw.h>
14 #include <linux/major.h>
20 #define FIO_HAVE_LIBAIO
21 #define FIO_HAVE_POSIXAIO
22 #define FIO_HAVE_FADVISE
23 #define FIO_HAVE_CPU_AFFINITY
24 #define FIO_HAVE_DISK_UTIL
26 #define FIO_HAVE_IOPRIO
27 #define FIO_HAVE_SPLICE
28 #define FIO_HAVE_IOSCHED_SWITCH
29 #define FIO_HAVE_ODIRECT
30 #define FIO_HAVE_HUGETLB
31 #define FIO_HAVE_RAWBIND
32 #define FIO_HAVE_BLKTRACE
33 #define FIO_HAVE_STRSEP
34 #define FIO_HAVE_FALLOCATE
35 #define FIO_HAVE_POSIXAIO_FSYNC
36 #define FIO_HAVE_PSHARED_MUTEX
37 #define FIO_HAVE_CL_SIZE
38 #define FIO_HAVE_CGROUPS
39 #define FIO_HAVE_FDATASYNC
40 #define FIO_HAVE_FS_STAT
42 #define FIO_HAVE_BINJECT
43 #define FIO_HAVE_CLOCK_MONOTONIC
45 #ifdef SYNC_FILE_RANGE_WAIT_BEFORE
46 #define FIO_HAVE_SYNC_FILE_RANGE
49 #define OS_MAP_ANON MAP_ANONYMOUS
51 #ifndef CLOCK_MONOTONIC
52 #define CLOCK_MONOTONIC 1
55 typedef cpu_set_t os_cpu_mask_t;
57 typedef struct drand48_data os_random_state_t;
60 * we want fadvise64 really, but it's so tangled... later
62 #ifdef FIO_HAVE_FADVISE
63 #define fadvise(fd, off, len, advice) \
64 posix_fadvise((fd), (off_t)(off), (len), (advice))
68 * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want
69 * the affinity helpers to work.
72 #define fio_setaffinity(pid, cpumask) \
73 sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
74 #define fio_getaffinity(pid, ptr) \
75 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
77 #define fio_setaffinity(pid, cpumask) \
78 sched_setaffinity((pid), &(cpumask))
79 #define fio_getaffinity(pid, ptr) \
80 sched_getaffinity((pid), (ptr))
83 #define fio_cpu_clear(mask, cpu) CPU_CLR((cpu), (mask))
84 #define fio_cpu_set(mask, cpu) CPU_SET((cpu), (mask))
86 static inline int fio_cpuset_init(os_cpu_mask_t *mask)
92 static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
97 #define FIO_MAX_CPUS CPU_SETSIZE
99 static inline int ioprio_set(int which, int who, int ioprio)
101 return syscall(__NR_ioprio_set, which, who, ioprio);
105 * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
108 #ifndef SPLICE_F_MOVE
109 #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */
110 #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
111 /* we may still block on the fd we splice */
112 /* from/to, of course */
113 #define SPLICE_F_MORE (0x04) /* expect more data */
114 #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */
116 static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
117 size_t len, unsigned int flags)
119 return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
122 static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
124 return syscall(__NR_sys_tee, fdin, fdout, len, flags);
127 static inline int vmsplice(int fd, const struct iovec *iov,
128 unsigned long nr_segs, unsigned int flags)
130 return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
134 #define SPLICE_DEF_SIZE (64*1024)
136 #ifdef FIO_HAVE_SYSLET
139 struct async_head_user;
144 static inline struct syslet_uatom *
145 async_exec(struct syslet_uatom *atom, struct async_head_user *ahu)
147 return (struct syslet_uatom *) syscall(__NR_async_exec, atom, ahu);
151 async_wait(unsigned long min_wait_events, unsigned long user_ring_idx,
152 struct async_head_user *ahu)
154 return syscall(__NR_async_wait, min_wait_events,
158 static inline long async_thread(void *event, struct async_head_user *ahu)
160 return syscall(__NR_async_thread, event, ahu);
163 static inline long umem_add(unsigned long *uptr, unsigned long inc)
165 return syscall(__NR_umem_add, uptr, inc);
167 #endif /* FIO_HAVE_SYSLET */
177 IOPRIO_WHO_PROCESS = 1,
182 #define IOPRIO_BITS 16
183 #define IOPRIO_CLASS_SHIFT 13
186 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
190 #define BLKFLSBUF _IO(0x12,97)
194 #define BLKDISCARD _IO(0x12,119)
197 static inline int blockdev_invalidate_cache(struct fio_file *f)
199 return ioctl(f->fd, BLKFLSBUF);
202 static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
204 if (!ioctl(f->fd, BLKGETSIZE64, bytes))
210 static inline unsigned long long os_phys_mem(void)
212 long pagesize, pages;
214 pagesize = sysconf(_SC_PAGESIZE);
215 pages = sysconf(_SC_PHYS_PAGES);
216 if (pages == -1 || pagesize == -1)
219 return (unsigned long long) pages * (unsigned long long) pagesize;
222 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
227 static inline long os_random_long(os_random_state_t *rs)
235 static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
237 struct raw_config_request rq;
240 if (major(dev) != RAW_MAJOR)
244 * we should be able to find /dev/rawctl or /dev/raw/rawctl
246 fd = open("/dev/rawctl", O_RDONLY);
248 fd = open("/dev/raw/rawctl", O_RDONLY);
253 rq.raw_minor = minor(dev);
254 if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
260 *majdev = rq.block_major;
261 *mindev = rq.block_minor;
266 #define FIO_O_NOATIME O_NOATIME
268 #define FIO_O_NOATIME 0
272 #define FIO_MADV_FREE MADV_REMOVE
275 #define CACHE_LINE_FILE \
276 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
278 static inline int arch_cache_line_size(void)
283 fd = open(CACHE_LINE_FILE, O_RDONLY);
287 ret = read(fd, size, sizeof(size));
297 static inline unsigned long long get_fs_size(const char *path)
299 unsigned long long ret;
302 if (statfs(path, &s) < 0)
306 ret *= (unsigned long long) s.f_bfree;
310 static inline int os_trim(int fd, unsigned long long start,
311 unsigned long long len)
318 if (!ioctl(fd, BLKDISCARD, range))