6 #include <sys/syscall.h>
12 #include <linux/unistd.h>
13 #include <linux/raw.h>
14 #include <linux/major.h>
21 #define FIO_HAVE_LIBAIO
22 #define FIO_HAVE_POSIXAIO
23 #define FIO_HAVE_FADVISE
24 #define FIO_HAVE_CPU_AFFINITY
25 #define FIO_HAVE_DISK_UTIL
27 #define FIO_HAVE_IOPRIO
28 #define FIO_HAVE_SPLICE
29 #define FIO_HAVE_IOSCHED_SWITCH
30 #define FIO_HAVE_ODIRECT
31 #define FIO_HAVE_HUGETLB
32 #define FIO_HAVE_RAWBIND
33 #define FIO_HAVE_BLKTRACE
34 #define FIO_HAVE_STRSEP
35 #define FIO_HAVE_FALLOCATE
36 #define FIO_HAVE_POSIXAIO_FSYNC
37 #define FIO_HAVE_PSHARED_MUTEX
38 #define FIO_HAVE_CL_SIZE
39 #define FIO_HAVE_CGROUPS
40 #define FIO_HAVE_FDATASYNC
41 #define FIO_HAVE_FS_STAT
43 #define FIO_HAVE_BINJECT
44 #define FIO_HAVE_CLOCK_MONOTONIC
45 #define FIO_HAVE_GETTID
48 * Can only enable this for newer glibcs, or the header and defines are
51 #if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 6
52 #define FIO_HAVE_LINUX_FALLOCATE
55 #ifdef SYNC_FILE_RANGE_WAIT_BEFORE
56 #define FIO_HAVE_SYNC_FILE_RANGE
59 #define OS_MAP_ANON MAP_ANONYMOUS
61 #ifndef CLOCK_MONOTONIC
62 #define CLOCK_MONOTONIC 1
65 typedef cpu_set_t os_cpu_mask_t;
67 typedef struct drand48_data os_random_state_t;
70 * we want fadvise64 really, but it's so tangled... later
72 #ifdef FIO_HAVE_FADVISE
73 #define fadvise(fd, off, len, advice) \
74 posix_fadvise((fd), (off_t)(off), (len), (advice))
78 * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want
79 * the affinity helpers to work.
82 #define fio_setaffinity(pid, cpumask) \
83 sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
84 #define fio_getaffinity(pid, ptr) \
85 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
87 #define fio_setaffinity(pid, cpumask) \
88 sched_setaffinity((pid), &(cpumask))
89 #define fio_getaffinity(pid, ptr) \
90 sched_getaffinity((pid), (ptr))
93 #define fio_cpu_clear(mask, cpu) CPU_CLR((cpu), (mask))
94 #define fio_cpu_set(mask, cpu) CPU_SET((cpu), (mask))
96 static inline int fio_cpuset_init(os_cpu_mask_t *mask)
102 static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
107 #define FIO_MAX_CPUS CPU_SETSIZE
109 static inline int ioprio_set(int which, int who, int ioprio)
111 return syscall(__NR_ioprio_set, which, who, ioprio);
114 static inline int gettid(void)
116 return syscall(__NR_gettid);
120 * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
123 #ifndef SPLICE_F_MOVE
124 #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */
125 #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
126 /* we may still block on the fd we splice */
127 /* from/to, of course */
128 #define SPLICE_F_MORE (0x04) /* expect more data */
129 #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */
131 static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
132 size_t len, unsigned int flags)
134 return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
137 static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
139 return syscall(__NR_sys_tee, fdin, fdout, len, flags);
142 static inline int vmsplice(int fd, const struct iovec *iov,
143 unsigned long nr_segs, unsigned int flags)
145 return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
149 #define SPLICE_DEF_SIZE (64*1024)
151 #ifdef FIO_HAVE_SYSLET
154 struct async_head_user;
159 static inline struct syslet_uatom *
160 async_exec(struct syslet_uatom *atom, struct async_head_user *ahu)
162 return (struct syslet_uatom *) syscall(__NR_async_exec, atom, ahu);
166 async_wait(unsigned long min_wait_events, unsigned long user_ring_idx,
167 struct async_head_user *ahu)
169 return syscall(__NR_async_wait, min_wait_events,
173 static inline long async_thread(void *event, struct async_head_user *ahu)
175 return syscall(__NR_async_thread, event, ahu);
178 static inline long umem_add(unsigned long *uptr, unsigned long inc)
180 return syscall(__NR_umem_add, uptr, inc);
182 #endif /* FIO_HAVE_SYSLET */
192 IOPRIO_WHO_PROCESS = 1,
197 #define IOPRIO_BITS 16
198 #define IOPRIO_CLASS_SHIFT 13
201 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
205 #define BLKFLSBUF _IO(0x12,97)
209 #define BLKDISCARD _IO(0x12,119)
212 static inline int blockdev_invalidate_cache(struct fio_file *f)
214 return ioctl(f->fd, BLKFLSBUF);
217 static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
219 if (!ioctl(f->fd, BLKGETSIZE64, bytes))
225 static inline unsigned long long os_phys_mem(void)
227 long pagesize, pages;
229 pagesize = sysconf(_SC_PAGESIZE);
230 pages = sysconf(_SC_PHYS_PAGES);
231 if (pages == -1 || pagesize == -1)
234 return (unsigned long long) pages * (unsigned long long) pagesize;
237 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
242 static inline long os_random_long(os_random_state_t *rs)
250 static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
252 struct raw_config_request rq;
255 if (major(dev) != RAW_MAJOR)
259 * we should be able to find /dev/rawctl or /dev/raw/rawctl
261 fd = open("/dev/rawctl", O_RDONLY);
263 fd = open("/dev/raw/rawctl", O_RDONLY);
268 rq.raw_minor = minor(dev);
269 if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
275 *majdev = rq.block_major;
276 *mindev = rq.block_minor;
281 #define FIO_O_NOATIME O_NOATIME
283 #define FIO_O_NOATIME 0
287 #define FIO_MADV_FREE MADV_REMOVE
290 #if __BYTE_ORDER == __LITTLE_ENDIAN
291 #define FIO_LITTLE_ENDIAN
292 #elif __BYTE_ORDER == __BIG_ENDIAN
293 #define FIO_BIG_ENDIAN
295 #error "Unknown endianness"
298 #define CACHE_LINE_FILE \
299 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
301 static inline int arch_cache_line_size(void)
306 fd = open(CACHE_LINE_FILE, O_RDONLY);
310 ret = read(fd, size, sizeof(size));
320 static inline unsigned long long get_fs_size(const char *path)
322 unsigned long long ret;
325 if (statfs(path, &s) < 0)
329 ret *= (unsigned long long) s.f_bfree;
333 static inline int os_trim(int fd, unsigned long long start,
334 unsigned long long len)
341 if (!ioctl(fd, BLKDISCARD, range))