4 #define FIO_OS os_linux
8 #include <sys/syscall.h>
9 #include <sys/sysmacros.h>
16 #include <linux/unistd.h>
17 #include <linux/raw.h>
18 #include <linux/major.h>
24 #define FIO_HAVE_CPU_AFFINITY
25 #define FIO_HAVE_DISK_UTIL
27 #define FIO_HAVE_IOPRIO
28 #define FIO_HAVE_IOPRIO_CLASS
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_PSHARED_MUTEX
35 #define FIO_HAVE_CL_SIZE
36 #define FIO_HAVE_CGROUPS
37 #define FIO_HAVE_FS_STAT
39 #define FIO_HAVE_BINJECT
40 #define FIO_HAVE_GETTID
41 #define FIO_USE_GENERIC_INIT_RANDOM_STATE
42 #define FIO_HAVE_PWRITEV2
45 #define FIO_HAVE_MMAP_HUGE
48 #define OS_MAP_ANON MAP_ANONYMOUS
50 typedef cpu_set_t os_cpu_mask_t;
52 typedef struct drand48_data os_random_state_t;
54 #ifdef CONFIG_3ARG_AFFINITY
55 #define fio_setaffinity(pid, cpumask) \
56 sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
57 #define fio_getaffinity(pid, ptr) \
58 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
59 #elif defined(CONFIG_2ARG_AFFINITY)
60 #define fio_setaffinity(pid, cpumask) \
61 sched_setaffinity((pid), &(cpumask))
62 #define fio_getaffinity(pid, ptr) \
63 sched_getaffinity((pid), (ptr))
66 #define fio_cpu_clear(mask, cpu) (void) CPU_CLR((cpu), (mask))
67 #define fio_cpu_set(mask, cpu) (void) CPU_SET((cpu), (mask))
68 #define fio_cpu_isset(mask, cpu) CPU_ISSET((cpu), (mask))
69 #define fio_cpu_count(mask) CPU_COUNT((mask))
71 static inline int fio_cpuset_init(os_cpu_mask_t *mask)
77 static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
82 #define FIO_MAX_CPUS CPU_SETSIZE
92 IOPRIO_WHO_PROCESS = 1,
97 #define IOPRIO_BITS 16
98 #define IOPRIO_CLASS_SHIFT 13
100 #define IOPRIO_MIN_PRIO 0 /* highest priority */
101 #define IOPRIO_MAX_PRIO 7 /* lowest priority */
103 #define IOPRIO_MIN_PRIO_CLASS 0
104 #define IOPRIO_MAX_PRIO_CLASS 3
106 static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
109 * If no class is set, assume BE
112 ioprio_class = IOPRIO_CLASS_BE;
114 ioprio |= ioprio_class << IOPRIO_CLASS_SHIFT;
115 return syscall(__NR_ioprio_set, which, who, ioprio);
118 static inline int gettid(void)
120 return syscall(__NR_gettid);
123 #define SPLICE_DEF_SIZE (64*1024)
126 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
130 #define BLKFLSBUF _IO(0x12,97)
134 #define BLKDISCARD _IO(0x12,119)
137 static inline int blockdev_invalidate_cache(struct fio_file *f)
139 return ioctl(f->fd, BLKFLSBUF);
142 static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
144 if (!ioctl(f->fd, BLKGETSIZE64, bytes))
150 static inline unsigned long long os_phys_mem(void)
152 long pagesize, pages;
154 pagesize = sysconf(_SC_PAGESIZE);
155 pages = sysconf(_SC_PHYS_PAGES);
156 if (pages == -1 || pagesize == -1)
159 return (unsigned long long) pages * (unsigned long long) pagesize;
162 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
167 static inline long os_random_long(os_random_state_t *rs)
175 static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
177 struct raw_config_request rq;
180 if (major(dev) != RAW_MAJOR)
184 * we should be able to find /dev/rawctl or /dev/raw/rawctl
186 fd = open("/dev/rawctl", O_RDONLY);
188 fd = open("/dev/raw/rawctl", O_RDONLY);
193 rq.raw_minor = minor(dev);
194 if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
200 *majdev = rq.block_major;
201 *mindev = rq.block_minor;
206 #define FIO_O_NOATIME O_NOATIME
208 #define FIO_O_NOATIME 0
212 #define OS_O_ATOMIC O_ATOMIC
214 #define OS_O_ATOMIC 040000000
218 #define FIO_MADV_FREE MADV_REMOVE
221 #if defined(__builtin_bswap16)
222 #define fio_swap16(x) __builtin_bswap16(x)
224 #define fio_swap16(x) __bswap_16(x)
226 #if defined(__builtin_bswap32)
227 #define fio_swap32(x) __builtin_bswap32(x)
229 #define fio_swap32(x) __bswap_32(x)
231 #if defined(__builtin_bswap64)
232 #define fio_swap64(x) __builtin_bswap64(x)
234 #define fio_swap64(x) __bswap_64(x)
237 #define CACHE_LINE_FILE \
238 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
240 static inline int arch_cache_line_size(void)
245 fd = open(CACHE_LINE_FILE, O_RDONLY);
249 ret = read(fd, size, sizeof(size));
259 static inline unsigned long long get_fs_free_size(const char *path)
261 unsigned long long ret;
264 if (statfs(path, &s) < 0)
268 ret *= (unsigned long long) s.f_bfree;
272 static inline int os_trim(int fd, unsigned long long start,
273 unsigned long long len)
280 if (!ioctl(fd, BLKDISCARD, range))
286 #ifdef CONFIG_SCHED_IDLE
287 static inline int fio_set_sched_idle(void)
289 struct sched_param p = { .sched_priority = 0, };
290 return sched_setscheduler(gettid(), SCHED_IDLE, &p);
294 #ifndef POSIX_FADV_STREAMID
295 #define POSIX_FADV_STREAMID 8
298 #define FIO_HAVE_STREAMID
301 #define RWF_HIPRI 0x00000001
304 #define RWF_DSYNC 0x00000002
307 #define RWF_SYNC 0x00000004
310 #ifndef CONFIG_PWRITEV2
312 static inline void make_pos_h_l(unsigned long *pos_h, unsigned long *pos_l,
315 *pos_l = offset & 0xffffffff;
316 *pos_h = ((uint64_t) offset) >> 32;
319 static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt,
320 off_t offset, unsigned int flags)
322 unsigned long pos_l, pos_h;
324 make_pos_h_l(&pos_h, &pos_l, offset);
325 return syscall(__NR_preadv2, fd, iov, iovcnt, pos_l, pos_h, flags);
327 static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
328 off_t offset, unsigned int flags)
330 unsigned long pos_l, pos_h;
332 make_pos_h_l(&pos_h, &pos_l, offset);
333 return syscall(__NR_pwritev2, fd, iov, iovcnt, pos_l, pos_h, flags);
336 static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt,
337 off_t offset, unsigned int flags)
342 static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
343 off_t offset, unsigned int flags)
348 #endif /* __NR_preadv2 */
349 #endif /* CONFIG_PWRITEV2 */