5 #define FIO_OS os_android
7 #define FIO_OS os_linux
10 #include <sys/ioctl.h>
12 #include <sys/syscall.h>
13 #include <sys/sysmacros.h>
20 #include <linux/unistd.h>
21 #include <linux/major.h>
24 #include <asm/byteorder.h>
26 #include "os-ashmem.h"
27 #define FIO_NO_HAVE_SHM_H
30 #ifdef ARCH_HAVE_CRC_CRYPTO
33 #define HWCAP_PMULL (1 << 4)
34 #endif /* HWCAP_PMULL */
36 #define HWCAP_CRC32 (1 << 7)
37 #endif /* HWCAP_CRC32 */
38 #endif /* ARCH_HAVE_CRC_CRYPTO */
40 #include "./os-linux-syscall.h"
43 #ifndef __has_builtin // Optional of course.
44 #define __has_builtin(x) 0 // Compatibility with non-clang compilers.
47 #define FIO_HAVE_CPU_AFFINITY
48 #define FIO_HAVE_DISK_UTIL
50 #define FIO_HAVE_IOPRIO
51 #define FIO_HAVE_IOPRIO_CLASS
52 #define FIO_HAVE_IOSCHED_SWITCH
53 #define FIO_HAVE_ODIRECT
54 #define FIO_HAVE_HUGETLB
55 #define FIO_HAVE_BLKTRACE
56 #define FIO_HAVE_CL_SIZE
57 #define FIO_HAVE_CGROUPS
58 #define FIO_HAVE_FS_STAT
60 #define FIO_HAVE_GETTID
61 #define FIO_USE_GENERIC_INIT_RANDOM_STATE
62 #define FIO_HAVE_BYTEORDER_FUNCS
63 #define FIO_HAVE_PWRITEV2
64 #define FIO_HAVE_SHM_ATTACH_REMOVED
67 #define FIO_HAVE_MMAP_HUGE
70 #define OS_MAP_ANON MAP_ANONYMOUS
72 #define FIO_EXT_ENG_DIR "/usr/local/lib/fio"
74 typedef cpu_set_t os_cpu_mask_t;
76 #ifdef CONFIG_3ARG_AFFINITY
77 #define fio_setaffinity(pid, cpumask) \
78 sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
79 #define fio_getaffinity(pid, ptr) \
80 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
81 #elif defined(CONFIG_2ARG_AFFINITY)
82 #define fio_setaffinity(pid, cpumask) \
83 sched_setaffinity((pid), &(cpumask))
84 #define fio_getaffinity(pid, ptr) \
85 sched_getaffinity((pid), (ptr))
88 #ifdef CONFIG_PTHREAD_GETAFFINITY
89 #define FIO_HAVE_GET_THREAD_AFFINITY
90 #define fio_get_thread_affinity(mask) \
91 pthread_getaffinity_np(pthread_self(), sizeof(mask), &(mask))
94 #define fio_cpu_clear(mask, cpu) CPU_CLR((cpu), (mask))
95 #define fio_cpu_set(mask, cpu) CPU_SET((cpu), (mask))
96 #define fio_cpu_isset(mask, cpu) (CPU_ISSET((cpu), (mask)) != 0)
97 #define fio_cpu_count(mask) CPU_COUNT((mask))
99 static inline int fio_cpuset_init(os_cpu_mask_t *mask)
105 static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
110 #define FIO_MAX_CPUS CPU_SETSIZE
120 IOPRIO_WHO_PROCESS = 1,
125 #define IOPRIO_BITS 16
126 #define IOPRIO_CLASS_SHIFT 13
128 #define IOPRIO_HINT_BITS 10
129 #define IOPRIO_HINT_SHIFT 3
131 #define IOPRIO_MIN_PRIO 0 /* highest priority */
132 #define IOPRIO_MAX_PRIO 7 /* lowest priority */
134 #define IOPRIO_MIN_PRIO_CLASS 0
135 #define IOPRIO_MAX_PRIO_CLASS 3
137 #define IOPRIO_MIN_PRIO_HINT 0
138 #define IOPRIO_MAX_PRIO_HINT ((1 << IOPRIO_HINT_BITS) - 1)
140 #define ioprio_class(ioprio) ((ioprio) >> IOPRIO_CLASS_SHIFT)
141 #define ioprio(ioprio) ((ioprio) & IOPRIO_MAX_PRIO)
142 #define ioprio_hint(ioprio) \
143 (((ioprio) >> IOPRIO_HINT_SHIFT) & IOPRIO_MAX_PRIO_HINT)
145 static inline int ioprio_value(int ioprio_class, int ioprio, int ioprio_hint)
148 * If no class is set, assume BE
151 ioprio_class = IOPRIO_CLASS_BE;
153 return (ioprio_class << IOPRIO_CLASS_SHIFT) |
154 (ioprio_hint << IOPRIO_HINT_SHIFT) |
158 static inline bool ioprio_value_is_class_rt(unsigned int priority)
160 return ioprio_class(priority) == IOPRIO_CLASS_RT;
163 static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio,
166 return syscall(__NR_ioprio_set, which, who,
167 ioprio_value(ioprio_class, ioprio, ioprio_hint));
170 #ifndef CONFIG_HAVE_GETTID
171 static inline int gettid(void)
173 return syscall(__NR_gettid);
177 #define SPLICE_DEF_SIZE (64*1024)
180 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
184 #define BLKFLSBUF _IO(0x12,97)
188 #define BLKDISCARD _IO(0x12,119)
191 static inline int blockdev_invalidate_cache(struct fio_file *f)
193 return ioctl(f->fd, BLKFLSBUF);
196 static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
198 if (!ioctl(f->fd, BLKGETSIZE64, bytes))
204 static inline unsigned long long os_phys_mem(void)
206 long pagesize, pages;
208 pagesize = sysconf(_SC_PAGESIZE);
209 pages = sysconf(_SC_PHYS_PAGES);
210 if (pages == -1 || pagesize == -1)
213 return (unsigned long long) pages * (unsigned long long) pagesize;
217 #define FIO_O_NOATIME O_NOATIME
219 #define FIO_O_NOATIME 0
223 #define FIO_MADV_FREE MADV_REMOVE
226 /* Check for GCC or Clang byte swap intrinsics */
227 #if (__has_builtin(__builtin_bswap16) && __has_builtin(__builtin_bswap32) \
228 && __has_builtin(__builtin_bswap64)) || (__GNUC__ > 4 \
229 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) /* fio_swapN */
230 #define fio_swap16(x) __builtin_bswap16(x)
231 #define fio_swap32(x) __builtin_bswap32(x)
232 #define fio_swap64(x) __builtin_bswap64(x)
234 #include <byteswap.h>
235 #define fio_swap16(x) bswap_16(x)
236 #define fio_swap32(x) bswap_32(x)
237 #define fio_swap64(x) bswap_64(x)
238 #endif /* fio_swapN */
240 #define CACHE_LINE_FILE \
241 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
243 static inline int arch_cache_line_size(void)
248 fd = open(CACHE_LINE_FILE, O_RDONLY);
252 ret = read(fd, size, sizeof(size));
262 static inline unsigned long long get_fs_free_size(const char *path)
264 unsigned long long ret;
267 if (statfs(path, &s) < 0)
271 ret *= (unsigned long long) s.f_bfree;
275 static inline int os_trim(struct fio_file *f, unsigned long long start,
276 unsigned long long len)
283 if (!ioctl(f->fd, BLKDISCARD, range))
289 #ifdef CONFIG_SCHED_IDLE
290 static inline int fio_set_sched_idle(void)
292 struct sched_param p = { .sched_priority = 0, };
293 return sched_setscheduler(gettid(), SCHED_IDLE, &p);
297 #ifndef F_GET_RW_HINT
298 #ifndef F_LINUX_SPECIFIC_BASE
299 #define F_LINUX_SPECIFIC_BASE 1024
301 #define F_GET_RW_HINT (F_LINUX_SPECIFIC_BASE + 11)
302 #define F_SET_RW_HINT (F_LINUX_SPECIFIC_BASE + 12)
303 #define F_GET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 13)
304 #define F_SET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 14)
307 #ifndef RWH_WRITE_LIFE_NONE
308 #define RWH_WRITE_LIFE_NOT_SET 0
309 #define RWH_WRITE_LIFE_NONE 1
310 #define RWH_WRITE_LIFE_SHORT 2
311 #define RWH_WRITE_LIFE_MEDIUM 3
312 #define RWH_WRITE_LIFE_LONG 4
313 #define RWH_WRITE_LIFE_EXTREME 5
316 #define FIO_HAVE_WRITE_HINT
319 #define RWF_HIPRI 0x00000001
322 #define RWF_DSYNC 0x00000002
325 #define RWF_SYNC 0x00000004
328 #define RWF_NOWAIT 0x00000008
332 #define RWF_UNCACHED 0x00000040
335 #ifndef RWF_WRITE_LIFE_SHIFT
336 #define RWF_WRITE_LIFE_SHIFT 4
337 #define RWF_WRITE_LIFE_SHORT (1 << RWF_WRITE_LIFE_SHIFT)
338 #define RWF_WRITE_LIFE_MEDIUM (2 << RWF_WRITE_LIFE_SHIFT)
339 #define RWF_WRITE_LIFE_LONG (3 << RWF_WRITE_LIFE_SHIFT)
340 #define RWF_WRITE_LIFE_EXTREME (4 << RWF_WRITE_LIFE_SHIFT)
343 #ifndef CONFIG_PWRITEV2
345 static inline void make_pos_h_l(unsigned long *pos_h, unsigned long *pos_l,
348 #if BITS_PER_LONG == 64
352 *pos_l = offset & 0xffffffff;
353 *pos_h = ((uint64_t) offset) >> 32;
356 static inline ssize_t preadv2(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_preadv2, fd, iov, iovcnt, pos_l, pos_h, flags);
364 static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
365 off_t offset, unsigned int flags)
367 unsigned long pos_l, pos_h;
369 make_pos_h_l(&pos_h, &pos_l, offset);
370 return syscall(__NR_pwritev2, fd, iov, iovcnt, pos_l, pos_h, flags);
373 static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt,
374 off_t offset, unsigned int flags)
379 static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
380 off_t offset, unsigned int flags)
385 #endif /* __NR_preadv2 */
386 #endif /* CONFIG_PWRITEV2 */
388 static inline int shm_attach_to_open_removed(void)
393 #ifdef CONFIG_LINUX_FALLOCATE
394 #define FIO_HAVE_NATIVE_FALLOCATE
395 static inline bool fio_fallocate(struct fio_file *f, uint64_t offset,
399 ret = fallocate(f->fd, 0, offset, len);
403 /* Work around buggy old glibc versions... */
411 #define FIO_HAVE_CPU_HAS
412 static inline bool os_cpu_has(cpu_features feature)
415 unsigned long fio_unused hwcap;
418 #ifdef ARCH_HAVE_CRC_CRYPTO
419 case CPU_ARM64_CRC32C:
420 hwcap = getauxval(AT_HWCAP);
421 have_feature = (hwcap & (HWCAP_PMULL | HWCAP_CRC32)) ==
422 (HWCAP_PMULL | HWCAP_CRC32);
426 have_feature = false;