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>
21 #include "./os-linux-syscall.h"
25 #define FIO_HAVE_CPU_AFFINITY
26 #define FIO_HAVE_DISK_UTIL
28 #define FIO_HAVE_IOPRIO
29 #define FIO_HAVE_IOPRIO_CLASS
30 #define FIO_HAVE_IOSCHED_SWITCH
31 #define FIO_HAVE_ODIRECT
32 #define FIO_HAVE_HUGETLB
33 #define FIO_HAVE_RAWBIND
34 #define FIO_HAVE_BLKTRACE
35 #define FIO_HAVE_PSHARED_MUTEX
36 #define FIO_HAVE_CL_SIZE
37 #define FIO_HAVE_CGROUPS
38 #define FIO_HAVE_FS_STAT
40 #define FIO_HAVE_BINJECT
41 #define FIO_HAVE_GETTID
42 #define FIO_USE_GENERIC_INIT_RANDOM_STATE
43 #define FIO_HAVE_PWRITEV2
44 #define FIO_HAVE_SHM_ATTACH_REMOVED
47 #define FIO_HAVE_MMAP_HUGE
50 #define OS_MAP_ANON MAP_ANONYMOUS
52 typedef cpu_set_t os_cpu_mask_t;
54 typedef struct drand48_data os_random_state_t;
56 #ifdef CONFIG_3ARG_AFFINITY
57 #define fio_setaffinity(pid, cpumask) \
58 sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
59 #define fio_getaffinity(pid, ptr) \
60 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
61 #elif defined(CONFIG_2ARG_AFFINITY)
62 #define fio_setaffinity(pid, cpumask) \
63 sched_setaffinity((pid), &(cpumask))
64 #define fio_getaffinity(pid, ptr) \
65 sched_getaffinity((pid), (ptr))
68 #define fio_cpu_clear(mask, cpu) (void) CPU_CLR((cpu), (mask))
69 #define fio_cpu_set(mask, cpu) (void) CPU_SET((cpu), (mask))
70 #define fio_cpu_isset(mask, cpu) CPU_ISSET((cpu), (mask))
71 #define fio_cpu_count(mask) CPU_COUNT((mask))
73 static inline int fio_cpuset_init(os_cpu_mask_t *mask)
79 static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
84 #define FIO_MAX_CPUS CPU_SETSIZE
94 IOPRIO_WHO_PROCESS = 1,
99 #define IOPRIO_BITS 16
100 #define IOPRIO_CLASS_SHIFT 13
102 #define IOPRIO_MIN_PRIO 0 /* highest priority */
103 #define IOPRIO_MAX_PRIO 7 /* lowest priority */
105 #define IOPRIO_MIN_PRIO_CLASS 0
106 #define IOPRIO_MAX_PRIO_CLASS 3
108 static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
111 * If no class is set, assume BE
114 ioprio_class = IOPRIO_CLASS_BE;
116 ioprio |= ioprio_class << IOPRIO_CLASS_SHIFT;
117 return syscall(__NR_ioprio_set, which, who, ioprio);
120 static inline int gettid(void)
122 return syscall(__NR_gettid);
125 #define SPLICE_DEF_SIZE (64*1024)
128 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
132 #define BLKFLSBUF _IO(0x12,97)
136 #define BLKDISCARD _IO(0x12,119)
139 static inline int blockdev_invalidate_cache(struct fio_file *f)
141 return ioctl(f->fd, BLKFLSBUF);
144 static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
146 if (!ioctl(f->fd, BLKGETSIZE64, bytes))
152 static inline unsigned long long os_phys_mem(void)
154 long pagesize, pages;
156 pagesize = sysconf(_SC_PAGESIZE);
157 pages = sysconf(_SC_PHYS_PAGES);
158 if (pages == -1 || pagesize == -1)
161 return (unsigned long long) pages * (unsigned long long) pagesize;
164 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
169 static inline long os_random_long(os_random_state_t *rs)
177 static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
179 struct raw_config_request rq;
182 if (major(dev) != RAW_MAJOR)
186 * we should be able to find /dev/rawctl or /dev/raw/rawctl
188 fd = open("/dev/rawctl", O_RDONLY);
190 fd = open("/dev/raw/rawctl", O_RDONLY);
195 rq.raw_minor = minor(dev);
196 if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
202 *majdev = rq.block_major;
203 *mindev = rq.block_minor;
208 #define FIO_O_NOATIME O_NOATIME
210 #define FIO_O_NOATIME 0
214 #define OS_O_ATOMIC O_ATOMIC
216 #define OS_O_ATOMIC 040000000
220 #define FIO_MADV_FREE MADV_REMOVE
223 #if defined(__builtin_bswap16)
224 #define fio_swap16(x) __builtin_bswap16(x)
226 #define fio_swap16(x) __bswap_16(x)
228 #if defined(__builtin_bswap32)
229 #define fio_swap32(x) __builtin_bswap32(x)
231 #define fio_swap32(x) __bswap_32(x)
233 #if defined(__builtin_bswap64)
234 #define fio_swap64(x) __builtin_bswap64(x)
236 #define fio_swap64(x) __bswap_64(x)
239 #define CACHE_LINE_FILE \
240 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
242 static inline int arch_cache_line_size(void)
247 fd = open(CACHE_LINE_FILE, O_RDONLY);
251 ret = read(fd, size, sizeof(size));
261 static inline unsigned long long get_fs_free_size(const char *path)
263 unsigned long long ret;
266 if (statfs(path, &s) < 0)
270 ret *= (unsigned long long) s.f_bfree;
274 static inline int os_trim(int fd, unsigned long long start,
275 unsigned long long len)
282 if (!ioctl(fd, BLKDISCARD, range))
288 #ifdef CONFIG_SCHED_IDLE
289 static inline int fio_set_sched_idle(void)
291 struct sched_param p = { .sched_priority = 0, };
292 return sched_setscheduler(gettid(), SCHED_IDLE, &p);
296 #ifndef POSIX_FADV_STREAMID
297 #define POSIX_FADV_STREAMID 8
300 #define FIO_HAVE_STREAMID
303 #define RWF_HIPRI 0x00000001
306 #define RWF_DSYNC 0x00000002
309 #define RWF_SYNC 0x00000004
312 #ifndef CONFIG_PWRITEV2
314 static inline void make_pos_h_l(unsigned long *pos_h, unsigned long *pos_l,
317 *pos_l = offset & 0xffffffff;
318 *pos_h = ((uint64_t) offset) >> 32;
321 static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt,
322 off_t offset, unsigned int flags)
324 unsigned long pos_l, pos_h;
326 make_pos_h_l(&pos_h, &pos_l, offset);
327 return syscall(__NR_preadv2, fd, iov, iovcnt, pos_l, pos_h, flags);
329 static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
330 off_t offset, unsigned int flags)
332 unsigned long pos_l, pos_h;
334 make_pos_h_l(&pos_h, &pos_l, offset);
335 return syscall(__NR_pwritev2, fd, iov, iovcnt, pos_l, pos_h, flags);
338 static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt,
339 off_t offset, unsigned int flags)
344 static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
345 off_t offset, unsigned int flags)
350 #endif /* __NR_preadv2 */
351 #endif /* CONFIG_PWRITEV2 */
353 static inline int shm_attach_to_open_removed(void)