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_FS_STAT
41 #ifdef SYNC_FILE_RANGE_WAIT_BEFORE
42 #define FIO_HAVE_SYNC_FILE_RANGE
45 #define OS_MAP_ANON MAP_ANONYMOUS
47 #ifndef CLOCK_MONOTONIC
48 #define CLOCK_MONOTONIC 1
51 typedef cpu_set_t os_cpu_mask_t;
53 typedef struct drand48_data os_random_state_t;
56 * we want fadvise64 really, but it's so tangled... later
58 #ifdef FIO_HAVE_FADVISE
59 #define fadvise(fd, off, len, advice) \
60 posix_fadvise((fd), (off_t)(off), (len), (advice))
64 * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want
65 * the affinity helpers to work.
68 #define fio_setaffinity(pid, cpumask) \
69 sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
70 #define fio_getaffinity(pid, ptr) \
71 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
73 #define fio_setaffinity(pid, cpumask) \
74 sched_setaffinity((pid), &(cpumask))
75 #define fio_getaffinity(pid, ptr) \
76 sched_getaffinity((pid), (ptr))
79 #define fio_cpu_clear(mask, cpu) CPU_CLR((cpu), (mask))
80 #define fio_cpu_set(mask, cpu) CPU_SET((cpu), (mask))
82 static inline int fio_cpuset_init(os_cpu_mask_t *mask)
88 static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
93 #define FIO_MAX_CPUS CPU_SETSIZE
95 static inline int ioprio_set(int which, int who, int ioprio)
97 return syscall(__NR_ioprio_set, which, who, ioprio);
101 * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
104 #ifndef SPLICE_F_MOVE
105 #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */
106 #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
107 /* we may still block on the fd we splice */
108 /* from/to, of course */
109 #define SPLICE_F_MORE (0x04) /* expect more data */
110 #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */
112 static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
113 size_t len, unsigned int flags)
115 return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
118 static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
120 return syscall(__NR_sys_tee, fdin, fdout, len, flags);
123 static inline int vmsplice(int fd, const struct iovec *iov,
124 unsigned long nr_segs, unsigned int flags)
126 return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
130 #define SPLICE_DEF_SIZE (64*1024)
132 #ifdef FIO_HAVE_SYSLET
135 struct async_head_user;
140 static inline struct syslet_uatom *
141 async_exec(struct syslet_uatom *atom, struct async_head_user *ahu)
143 return (struct syslet_uatom *) syscall(__NR_async_exec, atom, ahu);
147 async_wait(unsigned long min_wait_events, unsigned long user_ring_idx,
148 struct async_head_user *ahu)
150 return syscall(__NR_async_wait, min_wait_events,
154 static inline long async_thread(void *event, struct async_head_user *ahu)
156 return syscall(__NR_async_thread, event, ahu);
159 static inline long umem_add(unsigned long *uptr, unsigned long inc)
161 return syscall(__NR_umem_add, uptr, inc);
163 #endif /* FIO_HAVE_SYSLET */
173 IOPRIO_WHO_PROCESS = 1,
178 #define IOPRIO_BITS 16
179 #define IOPRIO_CLASS_SHIFT 13
182 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
186 #define BLKFLSBUF _IO(0x12,97)
190 #define BLKDISCARD _IO(0x12,119)
193 static inline int blockdev_invalidate_cache(int fd)
195 return ioctl(fd, BLKFLSBUF);
198 static inline int blockdev_size(int fd, unsigned long long *bytes)
200 if (!ioctl(fd, BLKGETSIZE64, bytes))
206 static inline unsigned long long os_phys_mem(void)
208 long pagesize, pages;
210 pagesize = sysconf(_SC_PAGESIZE);
211 pages = sysconf(_SC_PHYS_PAGES);
212 if (pages == -1 || pagesize == -1)
215 return (unsigned long long) pages * (unsigned long long) pagesize;
218 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
223 static inline long os_random_long(os_random_state_t *rs)
231 static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
233 struct raw_config_request rq;
236 if (major(dev) != RAW_MAJOR)
240 * we should be able to find /dev/rawctl or /dev/raw/rawctl
242 fd = open("/dev/rawctl", O_RDONLY);
244 fd = open("/dev/raw/rawctl", O_RDONLY);
249 rq.raw_minor = minor(dev);
250 if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
256 *majdev = rq.block_major;
257 *mindev = rq.block_minor;
262 #define FIO_O_NOATIME O_NOATIME
264 #define FIO_O_NOATIME 0
268 #define FIO_MADV_FREE MADV_REMOVE
271 #define CACHE_LINE_FILE \
272 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
274 static inline int arch_cache_line_size(void)
279 fd = open(CACHE_LINE_FILE, O_RDONLY);
283 ret = read(fd, size, sizeof(size));
293 static inline unsigned long long get_fs_size(const char *path)
295 unsigned long long ret;
298 if (statfs(path, &s) < 0)
302 ret *= (unsigned long long) s.f_bfree;
306 static inline int os_trim(int fd, unsigned long long start,
307 unsigned long long len)
314 if (!ioctl(fd, BLKDISCARD, range))