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
44 #define FIO_HAVE_GETTID
47 * Can only enable this for newer glibcs, or the header and defines are
50 #if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 6
51 #define FIO_HAVE_LINUX_FALLOCATE
54 #ifdef SYNC_FILE_RANGE_WAIT_BEFORE
55 #define FIO_HAVE_SYNC_FILE_RANGE
58 #define OS_MAP_ANON MAP_ANONYMOUS
60 #ifndef CLOCK_MONOTONIC
61 #define CLOCK_MONOTONIC 1
64 typedef cpu_set_t os_cpu_mask_t;
66 typedef struct drand48_data os_random_state_t;
69 * we want fadvise64 really, but it's so tangled... later
71 #ifdef FIO_HAVE_FADVISE
72 #define fadvise(fd, off, len, advice) \
73 posix_fadvise((fd), (off_t)(off), (len), (advice))
77 * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want
78 * the affinity helpers to work.
81 #define fio_setaffinity(pid, cpumask) \
82 sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
83 #define fio_getaffinity(pid, ptr) \
84 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
86 #define fio_setaffinity(pid, cpumask) \
87 sched_setaffinity((pid), &(cpumask))
88 #define fio_getaffinity(pid, ptr) \
89 sched_getaffinity((pid), (ptr))
92 #define fio_cpu_clear(mask, cpu) CPU_CLR((cpu), (mask))
93 #define fio_cpu_set(mask, cpu) CPU_SET((cpu), (mask))
95 static inline int fio_cpuset_init(os_cpu_mask_t *mask)
101 static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
106 #define FIO_MAX_CPUS CPU_SETSIZE
108 static inline int ioprio_set(int which, int who, int ioprio)
110 return syscall(__NR_ioprio_set, which, who, ioprio);
113 static inline int gettid(void)
115 return syscall(__NR_gettid);
119 * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
122 #ifndef SPLICE_F_MOVE
123 #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */
124 #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
125 /* we may still block on the fd we splice */
126 /* from/to, of course */
127 #define SPLICE_F_MORE (0x04) /* expect more data */
128 #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */
130 static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
131 size_t len, unsigned int flags)
133 return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
136 static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
138 return syscall(__NR_sys_tee, fdin, fdout, len, flags);
141 static inline int vmsplice(int fd, const struct iovec *iov,
142 unsigned long nr_segs, unsigned int flags)
144 return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
148 #define SPLICE_DEF_SIZE (64*1024)
150 #ifdef FIO_HAVE_SYSLET
153 struct async_head_user;
158 static inline struct syslet_uatom *
159 async_exec(struct syslet_uatom *atom, struct async_head_user *ahu)
161 return (struct syslet_uatom *) syscall(__NR_async_exec, atom, ahu);
165 async_wait(unsigned long min_wait_events, unsigned long user_ring_idx,
166 struct async_head_user *ahu)
168 return syscall(__NR_async_wait, min_wait_events,
172 static inline long async_thread(void *event, struct async_head_user *ahu)
174 return syscall(__NR_async_thread, event, ahu);
177 static inline long umem_add(unsigned long *uptr, unsigned long inc)
179 return syscall(__NR_umem_add, uptr, inc);
181 #endif /* FIO_HAVE_SYSLET */
191 IOPRIO_WHO_PROCESS = 1,
196 #define IOPRIO_BITS 16
197 #define IOPRIO_CLASS_SHIFT 13
200 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
204 #define BLKFLSBUF _IO(0x12,97)
208 #define BLKDISCARD _IO(0x12,119)
211 static inline int blockdev_invalidate_cache(struct fio_file *f)
213 return ioctl(f->fd, BLKFLSBUF);
216 static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
218 if (!ioctl(f->fd, BLKGETSIZE64, bytes))
224 static inline unsigned long long os_phys_mem(void)
226 long pagesize, pages;
228 pagesize = sysconf(_SC_PAGESIZE);
229 pages = sysconf(_SC_PHYS_PAGES);
230 if (pages == -1 || pagesize == -1)
233 return (unsigned long long) pages * (unsigned long long) pagesize;
236 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
241 static inline long os_random_long(os_random_state_t *rs)
249 static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
251 struct raw_config_request rq;
254 if (major(dev) != RAW_MAJOR)
258 * we should be able to find /dev/rawctl or /dev/raw/rawctl
260 fd = open("/dev/rawctl", O_RDONLY);
262 fd = open("/dev/raw/rawctl", O_RDONLY);
267 rq.raw_minor = minor(dev);
268 if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
274 *majdev = rq.block_major;
275 *mindev = rq.block_minor;
280 #define FIO_O_NOATIME O_NOATIME
282 #define FIO_O_NOATIME 0
286 #define FIO_MADV_FREE MADV_REMOVE
289 #define CACHE_LINE_FILE \
290 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
292 static inline int arch_cache_line_size(void)
297 fd = open(CACHE_LINE_FILE, O_RDONLY);
301 ret = read(fd, size, sizeof(size));
311 static inline unsigned long long get_fs_size(const char *path)
313 unsigned long long ret;
316 if (statfs(path, &s) < 0)
320 ret *= (unsigned long long) s.f_bfree;
324 static inline int os_trim(int fd, unsigned long long start,
325 unsigned long long len)
332 if (!ioctl(fd, BLKDISCARD, range))