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_MIN_PRIO 0 /* highest priority */
129 #define IOPRIO_MAX_PRIO 7 /* lowest priority */
131 #define IOPRIO_MIN_PRIO_CLASS 0
132 #define IOPRIO_MAX_PRIO_CLASS 3
134 static inline int ioprio_value(int ioprio_class, int ioprio)
137 * If no class is set, assume BE
140 ioprio_class = IOPRIO_CLASS_BE;
142 return (ioprio_class << IOPRIO_CLASS_SHIFT) | ioprio;
145 static inline bool ioprio_value_is_class_rt(unsigned int priority)
147 return (priority >> IOPRIO_CLASS_SHIFT) == IOPRIO_CLASS_RT;
150 static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
152 return syscall(__NR_ioprio_set, which, who,
153 ioprio_value(ioprio_class, ioprio));
156 #define ioprio_class(ioprio) ((ioprio) >> IOPRIO_CLASS_SHIFT)
157 #define ioprio(ioprio) ((ioprio) & 7)
159 #ifndef CONFIG_HAVE_GETTID
160 static inline int gettid(void)
162 return syscall(__NR_gettid);
166 #define SPLICE_DEF_SIZE (64*1024)
169 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
173 #define BLKFLSBUF _IO(0x12,97)
177 #define BLKDISCARD _IO(0x12,119)
180 static inline int blockdev_invalidate_cache(struct fio_file *f)
182 return ioctl(f->fd, BLKFLSBUF);
185 static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
187 if (!ioctl(f->fd, BLKGETSIZE64, bytes))
193 static inline unsigned long long os_phys_mem(void)
195 long pagesize, pages;
197 pagesize = sysconf(_SC_PAGESIZE);
198 pages = sysconf(_SC_PHYS_PAGES);
199 if (pages == -1 || pagesize == -1)
202 return (unsigned long long) pages * (unsigned long long) pagesize;
206 #define FIO_O_NOATIME O_NOATIME
208 #define FIO_O_NOATIME 0
212 #define FIO_MADV_FREE MADV_REMOVE
215 /* Check for GCC or Clang byte swap intrinsics */
216 #if (__has_builtin(__builtin_bswap16) && __has_builtin(__builtin_bswap32) \
217 && __has_builtin(__builtin_bswap64)) || (__GNUC__ > 4 \
218 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) /* fio_swapN */
219 #define fio_swap16(x) __builtin_bswap16(x)
220 #define fio_swap32(x) __builtin_bswap32(x)
221 #define fio_swap64(x) __builtin_bswap64(x)
223 #include <byteswap.h>
224 #define fio_swap16(x) bswap_16(x)
225 #define fio_swap32(x) bswap_32(x)
226 #define fio_swap64(x) bswap_64(x)
227 #endif /* fio_swapN */
229 #define CACHE_LINE_FILE \
230 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
232 static inline int arch_cache_line_size(void)
237 fd = open(CACHE_LINE_FILE, O_RDONLY);
241 ret = read(fd, size, sizeof(size));
251 static inline unsigned long long get_fs_free_size(const char *path)
253 unsigned long long ret;
256 if (statfs(path, &s) < 0)
260 ret *= (unsigned long long) s.f_bfree;
264 static inline int os_trim(struct fio_file *f, unsigned long long start,
265 unsigned long long len)
272 if (!ioctl(f->fd, BLKDISCARD, range))
278 #ifdef CONFIG_SCHED_IDLE
279 static inline int fio_set_sched_idle(void)
281 struct sched_param p = { .sched_priority = 0, };
282 return sched_setscheduler(gettid(), SCHED_IDLE, &p);
286 #ifndef F_GET_RW_HINT
287 #ifndef F_LINUX_SPECIFIC_BASE
288 #define F_LINUX_SPECIFIC_BASE 1024
290 #define F_GET_RW_HINT (F_LINUX_SPECIFIC_BASE + 11)
291 #define F_SET_RW_HINT (F_LINUX_SPECIFIC_BASE + 12)
292 #define F_GET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 13)
293 #define F_SET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 14)
296 #ifndef RWH_WRITE_LIFE_NONE
297 #define RWH_WRITE_LIFE_NOT_SET 0
298 #define RWH_WRITE_LIFE_NONE 1
299 #define RWH_WRITE_LIFE_SHORT 2
300 #define RWH_WRITE_LIFE_MEDIUM 3
301 #define RWH_WRITE_LIFE_LONG 4
302 #define RWH_WRITE_LIFE_EXTREME 5
305 #define FIO_HAVE_WRITE_HINT
308 #define RWF_HIPRI 0x00000001
311 #define RWF_DSYNC 0x00000002
314 #define RWF_SYNC 0x00000004
317 #define RWF_NOWAIT 0x00000008
321 #define RWF_UNCACHED 0x00000040
324 #ifndef RWF_WRITE_LIFE_SHIFT
325 #define RWF_WRITE_LIFE_SHIFT 4
326 #define RWF_WRITE_LIFE_SHORT (1 << RWF_WRITE_LIFE_SHIFT)
327 #define RWF_WRITE_LIFE_MEDIUM (2 << RWF_WRITE_LIFE_SHIFT)
328 #define RWF_WRITE_LIFE_LONG (3 << RWF_WRITE_LIFE_SHIFT)
329 #define RWF_WRITE_LIFE_EXTREME (4 << RWF_WRITE_LIFE_SHIFT)
332 #ifndef CONFIG_PWRITEV2
334 static inline void make_pos_h_l(unsigned long *pos_h, unsigned long *pos_l,
337 #if BITS_PER_LONG == 64
341 *pos_l = offset & 0xffffffff;
342 *pos_h = ((uint64_t) offset) >> 32;
345 static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt,
346 off_t offset, unsigned int flags)
348 unsigned long pos_l, pos_h;
350 make_pos_h_l(&pos_h, &pos_l, offset);
351 return syscall(__NR_preadv2, fd, iov, iovcnt, pos_l, pos_h, flags);
353 static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
354 off_t offset, unsigned int flags)
356 unsigned long pos_l, pos_h;
358 make_pos_h_l(&pos_h, &pos_l, offset);
359 return syscall(__NR_pwritev2, fd, iov, iovcnt, pos_l, pos_h, flags);
362 static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt,
363 off_t offset, unsigned int flags)
368 static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt,
369 off_t offset, unsigned int flags)
374 #endif /* __NR_preadv2 */
375 #endif /* CONFIG_PWRITEV2 */
377 static inline int shm_attach_to_open_removed(void)
382 #ifdef CONFIG_LINUX_FALLOCATE
383 #define FIO_HAVE_NATIVE_FALLOCATE
384 static inline bool fio_fallocate(struct fio_file *f, uint64_t offset,
388 ret = fallocate(f->fd, 0, offset, len);
392 /* Work around buggy old glibc versions... */
400 #define FIO_HAVE_CPU_HAS
401 static inline bool os_cpu_has(cpu_features feature)
404 unsigned long fio_unused hwcap;
407 #ifdef ARCH_HAVE_CRC_CRYPTO
408 case CPU_ARM64_CRC32C:
409 hwcap = getauxval(AT_HWCAP);
410 have_feature = (hwcap & (HWCAP_PMULL | HWCAP_CRC32)) ==
411 (HWCAP_PMULL | HWCAP_CRC32);
415 have_feature = false;