Commit | Line | Data |
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ebac4655 JA |
1 | #ifndef FIO_OS_LINUX_H |
2 | #define FIO_OS_LINUX_H | |
3 | ||
cca84643 JA |
4 | #define FIO_OS os_linux |
5 | ||
ebac4655 | 6 | #include <sys/ioctl.h> |
8756e4d4 | 7 | #include <sys/uio.h> |
3c39a379 | 8 | #include <sys/syscall.h> |
250e878a | 9 | #include <sys/sysmacros.h> |
2e3bd4c2 | 10 | #include <sys/vfs.h> |
39b93568 | 11 | #include <sys/mman.h> |
3c39a379 | 12 | #include <unistd.h> |
97fbdfa1 | 13 | #include <fcntl.h> |
3c2d93ed | 14 | #include <errno.h> |
d09913c2 | 15 | #include <sched.h> |
ea421790 | 16 | #include <linux/unistd.h> |
07e5b264 JA |
17 | #include <linux/raw.h> |
18 | #include <linux/major.h> | |
1894d171 TK |
19 | #include <linux/fs.h> |
20 | #include <scsi/sg.h> | |
ebac4655 | 21 | |
58828d07 SW |
22 | #ifdef ARCH_HAVE_CRC_CRYPTO |
23 | #include <sys/auxv.h> | |
24 | #ifndef HWCAP_CRC32 | |
25 | #define HWCAP_CRC32 (1 << 7) | |
26 | #endif /* HWCAP_CRC32 */ | |
27 | #endif /* ARCH_HAVE_CRC_CRYPTO */ | |
28 | ||
1c764dbe | 29 | #include "./os-linux-syscall.h" |
e2e58886 | 30 | #include "../file.h" |
f3de88a7 | 31 | |
7922a7b7 OM |
32 | #ifndef __has_builtin // Optional of course. |
33 | #define __has_builtin(x) 0 // Compatibility with non-clang compilers. | |
34 | #endif | |
35 | ||
ebac4655 JA |
36 | #define FIO_HAVE_CPU_AFFINITY |
37 | #define FIO_HAVE_DISK_UTIL | |
38 | #define FIO_HAVE_SGIO | |
ba4f8923 | 39 | #define FIO_HAVE_IOPRIO |
32ef447a | 40 | #define FIO_HAVE_IOPRIO_CLASS |
22f78b32 | 41 | #define FIO_HAVE_IOSCHED_SWITCH |
2c0ecd28 | 42 | #define FIO_HAVE_ODIRECT |
74b025b0 | 43 | #define FIO_HAVE_HUGETLB |
07e5b264 | 44 | #define FIO_HAVE_RAWBIND |
5e62c22a | 45 | #define FIO_HAVE_BLKTRACE |
eb7ccf38 | 46 | #define FIO_HAVE_CL_SIZE |
a696fa2a | 47 | #define FIO_HAVE_CGROUPS |
2e3bd4c2 | 48 | #define FIO_HAVE_FS_STAT |
a5f3027c | 49 | #define FIO_HAVE_TRIM |
47f767c1 | 50 | #define FIO_HAVE_GETTID |
93bcfd20 | 51 | #define FIO_USE_GENERIC_INIT_RANDOM_STATE |
6562685f | 52 | #define FIO_HAVE_PWRITEV2 |
97900ebf | 53 | #define FIO_HAVE_SHM_ATTACH_REMOVED |
b6959b55 | 54 | |
39b93568 JA |
55 | #ifdef MAP_HUGETLB |
56 | #define FIO_HAVE_MMAP_HUGE | |
57 | #endif | |
58 | ||
dc873b6f | 59 | #define OS_MAP_ANON MAP_ANONYMOUS |
ebac4655 JA |
60 | |
61 | typedef cpu_set_t os_cpu_mask_t; | |
4e78e405 | 62 | |
67bf9823 | 63 | #ifdef CONFIG_3ARG_AFFINITY |
e8462bd8 JA |
64 | #define fio_setaffinity(pid, cpumask) \ |
65 | sched_setaffinity((pid), sizeof(cpumask), &(cpumask)) | |
ebac4655 JA |
66 | #define fio_getaffinity(pid, ptr) \ |
67 | sched_getaffinity((pid), sizeof(cpu_set_t), (ptr)) | |
67bf9823 | 68 | #elif defined(CONFIG_2ARG_AFFINITY) |
e8462bd8 JA |
69 | #define fio_setaffinity(pid, cpumask) \ |
70 | sched_setaffinity((pid), &(cpumask)) | |
c8f025f8 JA |
71 | #define fio_getaffinity(pid, ptr) \ |
72 | sched_getaffinity((pid), (ptr)) | |
73 | #endif | |
be4ecfdf | 74 | |
1f4c0a4f JA |
75 | #define fio_cpu_clear(mask, cpu) (void) CPU_CLR((cpu), (mask)) |
76 | #define fio_cpu_set(mask, cpu) (void) CPU_SET((cpu), (mask)) | |
52fd65f4 | 77 | #define fio_cpu_isset(mask, cpu) (CPU_ISSET((cpu), (mask)) != 0) |
d004a209 | 78 | #define fio_cpu_count(mask) CPU_COUNT((mask)) |
d2ce18b5 JA |
79 | |
80 | static inline int fio_cpuset_init(os_cpu_mask_t *mask) | |
81 | { | |
82 | CPU_ZERO(mask); | |
83 | return 0; | |
84 | } | |
85 | ||
86 | static inline int fio_cpuset_exit(os_cpu_mask_t *mask) | |
87 | { | |
88 | return 0; | |
89 | } | |
6d459ee7 JA |
90 | |
91 | #define FIO_MAX_CPUS CPU_SETSIZE | |
4d8947de | 92 | |
28727df7 JA |
93 | enum { |
94 | IOPRIO_CLASS_NONE, | |
95 | IOPRIO_CLASS_RT, | |
96 | IOPRIO_CLASS_BE, | |
97 | IOPRIO_CLASS_IDLE, | |
98 | }; | |
99 | ||
100 | enum { | |
101 | IOPRIO_WHO_PROCESS = 1, | |
102 | IOPRIO_WHO_PGRP, | |
103 | IOPRIO_WHO_USER, | |
104 | }; | |
105 | ||
106 | #define IOPRIO_BITS 16 | |
107 | #define IOPRIO_CLASS_SHIFT 13 | |
108 | ||
1767bd34 TK |
109 | #define IOPRIO_MIN_PRIO 0 /* highest priority */ |
110 | #define IOPRIO_MAX_PRIO 7 /* lowest priority */ | |
111 | ||
112 | #define IOPRIO_MIN_PRIO_CLASS 0 | |
113 | #define IOPRIO_MAX_PRIO_CLASS 3 | |
114 | ||
28727df7 | 115 | static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio) |
ebac4655 | 116 | { |
28727df7 JA |
117 | /* |
118 | * If no class is set, assume BE | |
119 | */ | |
120 | if (!ioprio_class) | |
121 | ioprio_class = IOPRIO_CLASS_BE; | |
122 | ||
123 | ioprio |= ioprio_class << IOPRIO_CLASS_SHIFT; | |
ebac4655 JA |
124 | return syscall(__NR_ioprio_set, which, who, ioprio); |
125 | } | |
126 | ||
de5ed0e4 | 127 | #ifndef CONFIG_HAVE_GETTID |
47f767c1 JA |
128 | static inline int gettid(void) |
129 | { | |
130 | return syscall(__NR_gettid); | |
131 | } | |
de5ed0e4 | 132 | #endif |
47f767c1 | 133 | |
3feedc60 JA |
134 | #define SPLICE_DEF_SIZE (64*1024) |
135 | ||
ebac4655 JA |
136 | #ifndef BLKGETSIZE64 |
137 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) | |
138 | #endif | |
139 | ||
e5b401d4 JA |
140 | #ifndef BLKFLSBUF |
141 | #define BLKFLSBUF _IO(0x12,97) | |
142 | #endif | |
143 | ||
a5f3027c JA |
144 | #ifndef BLKDISCARD |
145 | #define BLKDISCARD _IO(0x12,119) | |
146 | #endif | |
147 | ||
e2e58886 | 148 | static inline int blockdev_invalidate_cache(struct fio_file *f) |
e5b401d4 | 149 | { |
ecc314ba | 150 | return ioctl(f->fd, BLKFLSBUF); |
e5b401d4 JA |
151 | } |
152 | ||
ecc314ba | 153 | static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes) |
ebac4655 | 154 | { |
ecc314ba | 155 | if (!ioctl(f->fd, BLKGETSIZE64, bytes)) |
ebac4655 JA |
156 | return 0; |
157 | ||
158 | return errno; | |
159 | } | |
160 | ||
32cd46a0 JA |
161 | static inline unsigned long long os_phys_mem(void) |
162 | { | |
163 | long pagesize, pages; | |
164 | ||
165 | pagesize = sysconf(_SC_PAGESIZE); | |
166 | pages = sysconf(_SC_PHYS_PAGES); | |
167 | if (pages == -1 || pagesize == -1) | |
168 | return 0; | |
169 | ||
170 | return (unsigned long long) pages * (unsigned long long) pagesize; | |
171 | } | |
172 | ||
8cc7afa9 | 173 | static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev) |
07e5b264 JA |
174 | { |
175 | struct raw_config_request rq; | |
176 | int fd; | |
177 | ||
178 | if (major(dev) != RAW_MAJOR) | |
8cc7afa9 | 179 | return 1; |
07e5b264 JA |
180 | |
181 | /* | |
182 | * we should be able to find /dev/rawctl or /dev/raw/rawctl | |
183 | */ | |
184 | fd = open("/dev/rawctl", O_RDONLY); | |
185 | if (fd < 0) { | |
186 | fd = open("/dev/raw/rawctl", O_RDONLY); | |
187 | if (fd < 0) | |
8cc7afa9 | 188 | return 1; |
07e5b264 JA |
189 | } |
190 | ||
191 | rq.raw_minor = minor(dev); | |
192 | if (ioctl(fd, RAW_GETBIND, &rq) < 0) { | |
193 | close(fd); | |
8cc7afa9 | 194 | return 1; |
07e5b264 JA |
195 | } |
196 | ||
197 | close(fd); | |
198 | *majdev = rq.block_major; | |
199 | *mindev = rq.block_minor; | |
8cc7afa9 | 200 | return 0; |
07e5b264 JA |
201 | } |
202 | ||
5b6f5c66 | 203 | #ifdef O_NOATIME |
5921e80c | 204 | #define FIO_O_NOATIME O_NOATIME |
5b6f5c66 JA |
205 | #else |
206 | #define FIO_O_NOATIME 0 | |
207 | #endif | |
5921e80c | 208 | |
d01612f3 CM |
209 | #ifdef O_ATOMIC |
210 | #define OS_O_ATOMIC O_ATOMIC | |
211 | #else | |
212 | #define OS_O_ATOMIC 040000000 | |
213 | #endif | |
214 | ||
a1c58075 JA |
215 | #ifdef MADV_REMOVE |
216 | #define FIO_MADV_FREE MADV_REMOVE | |
217 | #endif | |
218 | ||
7922a7b7 OM |
219 | /* Check for GCC or Clang byte swap intrinsics */ |
220 | #if (__has_builtin(__builtin_bswap16) && __has_builtin(__builtin_bswap32) \ | |
221 | && __has_builtin(__builtin_bswap64)) || (__GNUC__ > 4 \ | |
222 | || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) /* fio_swapN */ | |
df73aab1 | 223 | #define fio_swap16(x) __builtin_bswap16(x) |
df73aab1 | 224 | #define fio_swap32(x) __builtin_bswap32(x) |
df73aab1 JA |
225 | #define fio_swap64(x) __builtin_bswap64(x) |
226 | #else | |
7922a7b7 OM |
227 | #include <byteswap.h> |
228 | #define fio_swap16(x) bswap_16(x) | |
229 | #define fio_swap32(x) bswap_32(x) | |
230 | #define fio_swap64(x) bswap_64(x) | |
231 | #endif /* fio_swapN */ | |
ff245192 | 232 | |
eb7ccf38 JA |
233 | #define CACHE_LINE_FILE \ |
234 | "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size" | |
235 | ||
236 | static inline int arch_cache_line_size(void) | |
237 | { | |
238 | char size[32]; | |
239 | int fd, ret; | |
240 | ||
241 | fd = open(CACHE_LINE_FILE, O_RDONLY); | |
242 | if (fd < 0) | |
243 | return -1; | |
244 | ||
245 | ret = read(fd, size, sizeof(size)); | |
ec76f15a JA |
246 | |
247 | close(fd); | |
248 | ||
eb7ccf38 JA |
249 | if (ret <= 0) |
250 | return -1; | |
ec76f15a JA |
251 | else |
252 | return atoi(size); | |
eb7ccf38 JA |
253 | } |
254 | ||
d1419c4f TK |
255 | #ifdef __powerpc64__ |
256 | #define FIO_HAVE_CPU_ONLINE_SYSCONF | |
257 | static inline unsigned int cpus_online(void) | |
258 | { | |
259 | return sysconf(_SC_NPROCESSORS_CONF); | |
260 | } | |
261 | #endif | |
262 | ||
c08ad04c | 263 | static inline unsigned long long get_fs_free_size(const char *path) |
2e3bd4c2 JA |
264 | { |
265 | unsigned long long ret; | |
266 | struct statfs s; | |
267 | ||
268 | if (statfs(path, &s) < 0) | |
269 | return -1ULL; | |
270 | ||
271 | ret = s.f_bsize; | |
272 | ret *= (unsigned long long) s.f_bfree; | |
273 | return ret; | |
274 | } | |
275 | ||
496b1f9e | 276 | static inline int os_trim(struct fio_file *f, unsigned long long start, |
a5f3027c JA |
277 | unsigned long long len) |
278 | { | |
279 | uint64_t range[2]; | |
280 | ||
281 | range[0] = start; | |
282 | range[1] = len; | |
283 | ||
496b1f9e | 284 | if (!ioctl(f->fd, BLKDISCARD, range)) |
a5f3027c JA |
285 | return 0; |
286 | ||
287 | return errno; | |
288 | } | |
289 | ||
7e09a9f1 | 290 | #ifdef CONFIG_SCHED_IDLE |
f2a2ce0e HL |
291 | static inline int fio_set_sched_idle(void) |
292 | { | |
293 | struct sched_param p = { .sched_priority = 0, }; | |
294 | return sched_setscheduler(gettid(), SCHED_IDLE, &p); | |
295 | } | |
7e09a9f1 | 296 | #endif |
f2a2ce0e | 297 | |
ae8e559e JA |
298 | #ifndef F_GET_RW_HINT |
299 | #ifndef F_LINUX_SPECIFIC_BASE | |
300 | #define F_LINUX_SPECIFIC_BASE 1024 | |
301 | #endif | |
302 | #define F_GET_RW_HINT (F_LINUX_SPECIFIC_BASE + 11) | |
303 | #define F_SET_RW_HINT (F_LINUX_SPECIFIC_BASE + 12) | |
bd553af6 JA |
304 | #define F_GET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 13) |
305 | #define F_SET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 14) | |
ae8e559e JA |
306 | #endif |
307 | ||
308 | #ifndef RWH_WRITE_LIFE_NONE | |
bd553af6 JA |
309 | #define RWH_WRITE_LIFE_NOT_SET 0 |
310 | #define RWH_WRITE_LIFE_NONE 1 | |
311 | #define RWH_WRITE_LIFE_SHORT 2 | |
312 | #define RWH_WRITE_LIFE_MEDIUM 3 | |
313 | #define RWH_WRITE_LIFE_LONG 4 | |
314 | #define RWH_WRITE_LIFE_EXTREME 5 | |
37659335 JA |
315 | #endif |
316 | ||
ae8e559e | 317 | #define FIO_HAVE_WRITE_HINT |
37659335 | 318 | |
6562685f JA |
319 | #ifndef RWF_HIPRI |
320 | #define RWF_HIPRI 0x00000001 | |
321 | #endif | |
322 | #ifndef RWF_DSYNC | |
323 | #define RWF_DSYNC 0x00000002 | |
324 | #endif | |
325 | #ifndef RWF_SYNC | |
326 | #define RWF_SYNC 0x00000004 | |
327 | #endif | |
328 | ||
4a87b584 | 329 | #ifndef RWF_UNCACHED |
8beee62d | 330 | #define RWF_UNCACHED 0x00000040 |
4a87b584 JA |
331 | #endif |
332 | ||
72cd4146 JA |
333 | #ifndef RWF_WRITE_LIFE_SHIFT |
334 | #define RWF_WRITE_LIFE_SHIFT 4 | |
335 | #define RWF_WRITE_LIFE_SHORT (1 << RWF_WRITE_LIFE_SHIFT) | |
336 | #define RWF_WRITE_LIFE_MEDIUM (2 << RWF_WRITE_LIFE_SHIFT) | |
337 | #define RWF_WRITE_LIFE_LONG (3 << RWF_WRITE_LIFE_SHIFT) | |
338 | #define RWF_WRITE_LIFE_EXTREME (4 << RWF_WRITE_LIFE_SHIFT) | |
339 | #endif | |
340 | ||
6562685f JA |
341 | #ifndef CONFIG_PWRITEV2 |
342 | #ifdef __NR_preadv2 | |
343 | static inline void make_pos_h_l(unsigned long *pos_h, unsigned long *pos_l, | |
344 | off_t offset) | |
345 | { | |
7b5c648f | 346 | #if BITS_PER_LONG == 64 |
7b5c648f JA |
347 | *pos_l = offset; |
348 | *pos_h = 0; | |
349 | #else | |
6562685f JA |
350 | *pos_l = offset & 0xffffffff; |
351 | *pos_h = ((uint64_t) offset) >> 32; | |
7b5c648f | 352 | #endif |
6562685f JA |
353 | } |
354 | static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt, | |
355 | off_t offset, unsigned int flags) | |
356 | { | |
357 | unsigned long pos_l, pos_h; | |
358 | ||
359 | make_pos_h_l(&pos_h, &pos_l, offset); | |
360 | return syscall(__NR_preadv2, fd, iov, iovcnt, pos_l, pos_h, flags); | |
361 | } | |
362 | static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt, | |
363 | off_t offset, unsigned int flags) | |
364 | { | |
365 | unsigned long pos_l, pos_h; | |
366 | ||
367 | make_pos_h_l(&pos_h, &pos_l, offset); | |
368 | return syscall(__NR_pwritev2, fd, iov, iovcnt, pos_l, pos_h, flags); | |
369 | } | |
370 | #else | |
371 | static inline ssize_t preadv2(int fd, const struct iovec *iov, int iovcnt, | |
372 | off_t offset, unsigned int flags) | |
373 | { | |
374 | errno = ENOSYS; | |
375 | return -1; | |
376 | } | |
377 | static inline ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt, | |
378 | off_t offset, unsigned int flags) | |
379 | { | |
380 | errno = ENOSYS; | |
381 | return -1; | |
382 | } | |
383 | #endif /* __NR_preadv2 */ | |
384 | #endif /* CONFIG_PWRITEV2 */ | |
385 | ||
0cfe2089 TK |
386 | static inline int shm_attach_to_open_removed(void) |
387 | { | |
388 | return 1; | |
389 | } | |
390 | ||
2c3e17be SW |
391 | #ifdef CONFIG_LINUX_FALLOCATE |
392 | #define FIO_HAVE_NATIVE_FALLOCATE | |
393 | static inline bool fio_fallocate(struct fio_file *f, uint64_t offset, | |
394 | uint64_t len) | |
395 | { | |
396 | int ret; | |
e69dfc2b | 397 | ret = fallocate(f->fd, 0, offset, len); |
2c3e17be SW |
398 | if (ret == 0) |
399 | return true; | |
400 | ||
401 | /* Work around buggy old glibc versions... */ | |
402 | if (ret > 0) | |
403 | errno = ret; | |
404 | ||
405 | return false; | |
406 | } | |
407 | #endif | |
408 | ||
58828d07 SW |
409 | #define FIO_HAVE_CPU_HAS |
410 | static inline bool os_cpu_has(cpu_features feature) | |
411 | { | |
412 | bool have_feature; | |
413 | unsigned long fio_unused hwcap; | |
414 | ||
415 | switch (feature) { | |
416 | #ifdef ARCH_HAVE_CRC_CRYPTO | |
417 | case CPU_ARM64_CRC32C: | |
418 | hwcap = getauxval(AT_HWCAP); | |
419 | have_feature = (hwcap & HWCAP_CRC32) != 0; | |
420 | break; | |
421 | #endif | |
422 | default: | |
423 | have_feature = false; | |
424 | } | |
425 | ||
426 | return have_feature; | |
427 | } | |
428 | ||
ebac4655 | 429 | #endif |