4 #define FIO_OS os_linux
8 #include <sys/syscall.h>
9 #include <sys/sysmacros.h>
16 #include <linux/unistd.h>
17 #include <linux/major.h>
20 #include <asm/byteorder.h>
22 #ifdef ARCH_HAVE_CRC_CRYPTO
25 #define HWCAP_PMULL (1 << 4)
26 #endif /* HWCAP_PMULL */
28 #define HWCAP_CRC32 (1 << 7)
29 #endif /* HWCAP_CRC32 */
30 #endif /* ARCH_HAVE_CRC_CRYPTO */
32 #include "./os-linux-syscall.h"
35 #ifndef __has_builtin // Optional of course.
36 #define __has_builtin(x) 0 // Compatibility with non-clang compilers.
39 #define FIO_HAVE_CPU_AFFINITY
40 #define FIO_HAVE_DISK_UTIL
42 #define FIO_HAVE_IOPRIO
43 #define FIO_HAVE_IOPRIO_CLASS
44 #define FIO_HAVE_IOSCHED_SWITCH
45 #define FIO_HAVE_ODIRECT
46 #define FIO_HAVE_HUGETLB
47 #define FIO_HAVE_BLKTRACE
48 #define FIO_HAVE_CL_SIZE
49 #define FIO_HAVE_CGROUPS
50 #define FIO_HAVE_FS_STAT
52 #define FIO_HAVE_GETTID
53 #define FIO_USE_GENERIC_INIT_RANDOM_STATE
54 #define FIO_HAVE_BYTEORDER_FUNCS
55 #define FIO_HAVE_PWRITEV2
56 #define FIO_HAVE_SHM_ATTACH_REMOVED
59 #define FIO_HAVE_MMAP_HUGE
62 #define OS_MAP_ANON MAP_ANONYMOUS
64 #define FIO_EXT_ENG_DIR "/usr/local/lib/fio"
66 typedef cpu_set_t os_cpu_mask_t;
68 #ifdef CONFIG_3ARG_AFFINITY
69 #define fio_setaffinity(pid, cpumask) \
70 sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
71 #define fio_getaffinity(pid, ptr) \
72 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
73 #elif defined(CONFIG_2ARG_AFFINITY)
74 #define fio_setaffinity(pid, cpumask) \
75 sched_setaffinity((pid), &(cpumask))
76 #define fio_getaffinity(pid, ptr) \
77 sched_getaffinity((pid), (ptr))
80 #ifdef CONFIG_PTHREAD_GETAFFINITY
81 #define FIO_HAVE_GET_THREAD_AFFINITY
82 #define fio_get_thread_affinity(mask) \
83 pthread_getaffinity_np(pthread_self(), sizeof(mask), &(mask))
86 #define fio_cpu_clear(mask, cpu) CPU_CLR((cpu), (mask))
87 #define fio_cpu_set(mask, cpu) CPU_SET((cpu), (mask))
88 #define fio_cpu_isset(mask, cpu) (CPU_ISSET((cpu), (mask)) != 0)
89 #define fio_cpu_count(mask) CPU_COUNT((mask))
91 static inline int fio_cpuset_init(os_cpu_mask_t *mask)
97 static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
102 #define FIO_MAX_CPUS CPU_SETSIZE
112 IOPRIO_WHO_PROCESS = 1,
117 #define IOPRIO_BITS 16
118 #define IOPRIO_CLASS_SHIFT 13
120 #define IOPRIO_MIN_PRIO 0 /* highest priority */
121 #define IOPRIO_MAX_PRIO 7 /* lowest priority */
123 #define IOPRIO_MIN_PRIO_CLASS 0
124 #define IOPRIO_MAX_PRIO_CLASS 3
126 static inline int ioprio_value(int ioprio_class, int ioprio)
129 * If no class is set, assume BE
132 ioprio_class = IOPRIO_CLASS_BE;
134 return (ioprio_class << IOPRIO_CLASS_SHIFT) | ioprio;
137 static inline bool ioprio_value_is_class_rt(unsigned int priority)
139 return (priority >> IOPRIO_CLASS_SHIFT) == IOPRIO_CLASS_RT;
142 static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
144 return syscall(__NR_ioprio_set, which, who,
145 ioprio_value(ioprio_class, ioprio));
148 #ifndef CONFIG_HAVE_GETTID
149 static inline int gettid(void)
151 return syscall(__NR_gettid);
155 #define SPLICE_DEF_SIZE (64*1024)
158 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
162 #define BLKFLSBUF _IO(0x12,97)
166 #define BLKDISCARD _IO(0x12,119)
169 static inline int blockdev_invalidate_cache(struct fio_file *f)
171 return ioctl(f->fd, BLKFLSBUF);
174 static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
176 if (!ioctl(f->fd, BLKGETSIZE64, bytes))
182 static inline unsigned long long os_phys_mem(void)
184 long pagesize, pages;
186 pagesize = sysconf(_SC_PAGESIZE);
187 pages = sysconf(_SC_PHYS_PAGES);
188 if (pages == -1 || pagesize == -1)
191 return (unsigned long long) pages * (unsigned long long) pagesize;
195 #define FIO_O_NOATIME O_NOATIME
197 #define FIO_O_NOATIME 0
201 #define OS_O_ATOMIC O_ATOMIC
203 #define OS_O_ATOMIC 040000000
207 #define FIO_MADV_FREE MADV_REMOVE
210 /* Check for GCC or Clang byte swap intrinsics */
211 #if (__has_builtin(__builtin_bswap16) && __has_builtin(__builtin_bswap32) \
212 && __has_builtin(__builtin_bswap64)) || (__GNUC__ > 4 \
213 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) /* fio_swapN */
214 #define fio_swap16(x) __builtin_bswap16(x)
215 #define fio_swap32(x) __builtin_bswap32(x)
216 #define fio_swap64(x) __builtin_bswap64(x)
218 #include <byteswap.h>
219 #define fio_swap16(x) bswap_16(x)
220 #define fio_swap32(x) bswap_32(x)
221 #define fio_swap64(x) bswap_64(x)
222 #endif /* fio_swapN */
224 #define CACHE_LINE_FILE \
225 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
227 static inline int arch_cache_line_size(void)
232 fd = open(CACHE_LINE_FILE, O_RDONLY);
236 ret = read(fd, size, sizeof(size));
247 #define FIO_HAVE_CPU_ONLINE_SYSCONF
248 static inline unsigned int cpus_online(void)
250 return sysconf(_SC_NPROCESSORS_CONF);
254 static inline unsigned long long get_fs_free_size(const char *path)
256 unsigned long long ret;
259 if (statfs(path, &s) < 0)
263 ret *= (unsigned long long) s.f_bfree;
267 static inline int os_trim(struct fio_file *f, unsigned long long start,
268 unsigned long long len)
275 if (!ioctl(f->fd, BLKDISCARD, range))
281 #ifdef CONFIG_SCHED_IDLE
282 static inline int fio_set_sched_idle(void)
284 struct sched_param p = { .sched_priority = 0, };
285 return sched_setscheduler(gettid(), SCHED_IDLE, &p);
289 #ifndef F_GET_RW_HINT
290 #ifndef F_LINUX_SPECIFIC_BASE
291 #define F_LINUX_SPECIFIC_BASE 1024
293 #define F_GET_RW_HINT (F_LINUX_SPECIFIC_BASE + 11)
294 #define F_SET_RW_HINT (F_LINUX_SPECIFIC_BASE + 12)
295 #define F_GET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 13)
296 #define F_SET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 14)
299 #ifndef RWH_WRITE_LIFE_NONE
300 #define RWH_WRITE_LIFE_NOT_SET 0
301 #define RWH_WRITE_LIFE_NONE 1
302 #define RWH_WRITE_LIFE_SHORT 2
303 #define RWH_WRITE_LIFE_MEDIUM 3
304 #define RWH_WRITE_LIFE_LONG 4
305 #define RWH_WRITE_LIFE_EXTREME 5
308 #define FIO_HAVE_WRITE_HINT
311 #define RWF_HIPRI 0x00000001
314 #define RWF_DSYNC 0x00000002
317 #define RWF_SYNC 0x00000004
320 #define RWF_NOWAIT 0x00000008
324 #define RWF_UNCACHED 0x00000040
327 #ifndef RWF_WRITE_LIFE_SHIFT
328 #define RWF_WRITE_LIFE_SHIFT 4
329 #define RWF_WRITE_LIFE_SHORT (1 << RWF_WRITE_LIFE_SHIFT)
330 #define RWF_WRITE_LIFE_MEDIUM (2 << RWF_WRITE_LIFE_SHIFT)
331 #define RWF_WRITE_LIFE_LONG (3 << RWF_WRITE_LIFE_SHIFT)
332 #define RWF_WRITE_LIFE_EXTREME (4 << RWF_WRITE_LIFE_SHIFT)
335 #ifndef CONFIG_PWRITEV2
337 static inline void make_pos_h_l(unsigned long *pos_h, unsigned long *pos_l,
340 #if BITS_PER_LONG == 64
344 *pos_l = offset & 0xffffffff;
345 *pos_h = ((uint64_t) offset) >> 32;
348 static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt,
349 off_t offset, unsigned int flags)
351 unsigned long pos_l, pos_h;
353 make_pos_h_l(&pos_h, &pos_l, offset);
354 return syscall(__NR_preadv2, fd, iov, iovcnt, pos_l, pos_h, flags);
356 static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
357 off_t offset, unsigned int flags)
359 unsigned long pos_l, pos_h;
361 make_pos_h_l(&pos_h, &pos_l, offset);
362 return syscall(__NR_pwritev2, fd, iov, iovcnt, pos_l, pos_h, flags);
365 static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt,
366 off_t offset, unsigned int flags)
371 static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
372 off_t offset, unsigned int flags)
377 #endif /* __NR_preadv2 */
378 #endif /* CONFIG_PWRITEV2 */
380 static inline int shm_attach_to_open_removed(void)
385 #ifdef CONFIG_LINUX_FALLOCATE
386 #define FIO_HAVE_NATIVE_FALLOCATE
387 static inline bool fio_fallocate(struct fio_file *f, uint64_t offset,
391 ret = fallocate(f->fd, 0, offset, len);
395 /* Work around buggy old glibc versions... */
403 #define FIO_HAVE_CPU_HAS
404 static inline bool os_cpu_has(cpu_features feature)
407 unsigned long fio_unused hwcap;
410 #ifdef ARCH_HAVE_CRC_CRYPTO
411 case CPU_ARM64_CRC32C:
412 hwcap = getauxval(AT_HWCAP);
413 have_feature = (hwcap & (HWCAP_PMULL | HWCAP_CRC32)) ==
414 (HWCAP_PMULL | HWCAP_CRC32);
418 have_feature = false;