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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> |
2e3bd4c2 | 9 | #include <sys/vfs.h> |
3c39a379 | 10 | #include <unistd.h> |
97fbdfa1 | 11 | #include <fcntl.h> |
3c2d93ed | 12 | #include <errno.h> |
d09913c2 | 13 | #include <sched.h> |
ea421790 | 14 | #include <linux/unistd.h> |
07e5b264 JA |
15 | #include <linux/raw.h> |
16 | #include <linux/major.h> | |
610a730c | 17 | #include <endian.h> |
ebac4655 | 18 | |
f3de88a7 | 19 | #include "indirect.h" |
79a43187 | 20 | #include "binject.h" |
e2e58886 | 21 | #include "../file.h" |
f3de88a7 | 22 | |
ebac4655 JA |
23 | #define FIO_HAVE_LIBAIO |
24 | #define FIO_HAVE_POSIXAIO | |
25 | #define FIO_HAVE_FADVISE | |
26 | #define FIO_HAVE_CPU_AFFINITY | |
27 | #define FIO_HAVE_DISK_UTIL | |
28 | #define FIO_HAVE_SGIO | |
ba4f8923 | 29 | #define FIO_HAVE_IOPRIO |
8756e4d4 | 30 | #define FIO_HAVE_SPLICE |
22f78b32 | 31 | #define FIO_HAVE_IOSCHED_SWITCH |
2c0ecd28 | 32 | #define FIO_HAVE_ODIRECT |
74b025b0 | 33 | #define FIO_HAVE_HUGETLB |
07e5b264 | 34 | #define FIO_HAVE_RAWBIND |
5e62c22a | 35 | #define FIO_HAVE_BLKTRACE |
5921e80c | 36 | #define FIO_HAVE_STRSEP |
fffca02d | 37 | #define FIO_HAVE_FALLOCATE |
207cb0f0 | 38 | #define FIO_HAVE_POSIXAIO_FSYNC |
f356d01d | 39 | #define FIO_HAVE_PSHARED_MUTEX |
eb7ccf38 | 40 | #define FIO_HAVE_CL_SIZE |
a696fa2a | 41 | #define FIO_HAVE_CGROUPS |
c36d16f5 | 42 | #define FIO_HAVE_FDATASYNC |
2e3bd4c2 | 43 | #define FIO_HAVE_FS_STAT |
a5f3027c | 44 | #define FIO_HAVE_TRIM |
79a43187 | 45 | #define FIO_HAVE_BINJECT |
ecc314ba | 46 | #define FIO_HAVE_CLOCK_MONOTONIC |
47f767c1 | 47 | #define FIO_HAVE_GETTID |
b6959b55 | 48 | |
804bb9a1 JA |
49 | /* |
50 | * Can only enable this for newer glibcs, or the header and defines are | |
51 | * missing | |
52 | */ | |
53 | #if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 6 | |
54 | #define FIO_HAVE_LINUX_FALLOCATE | |
55 | #endif | |
56 | ||
093729f7 JA |
57 | #ifdef SYNC_FILE_RANGE_WAIT_BEFORE |
58 | #define FIO_HAVE_SYNC_FILE_RANGE | |
59 | #endif | |
60 | ||
dc873b6f | 61 | #define OS_MAP_ANON MAP_ANONYMOUS |
ebac4655 | 62 | |
4d8947de SL |
63 | #ifndef CLOCK_MONOTONIC |
64 | #define CLOCK_MONOTONIC 1 | |
65 | #endif | |
66 | ||
ebac4655 | 67 | typedef cpu_set_t os_cpu_mask_t; |
4e78e405 | 68 | |
6dfd46b9 | 69 | typedef struct drand48_data os_random_state_t; |
ebac4655 JA |
70 | |
71 | /* | |
72 | * we want fadvise64 really, but it's so tangled... later | |
73 | */ | |
4d8947de | 74 | #ifdef FIO_HAVE_FADVISE |
ebac4655 JA |
75 | #define fadvise(fd, off, len, advice) \ |
76 | posix_fadvise((fd), (off_t)(off), (len), (advice)) | |
4d8947de | 77 | #endif |
ebac4655 | 78 | |
c8f025f8 JA |
79 | /* |
80 | * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want | |
81 | * the affinity helpers to work. | |
82 | */ | |
83 | #ifndef GLIBC_2_3_2 | |
e8462bd8 JA |
84 | #define fio_setaffinity(pid, cpumask) \ |
85 | sched_setaffinity((pid), sizeof(cpumask), &(cpumask)) | |
ebac4655 JA |
86 | #define fio_getaffinity(pid, ptr) \ |
87 | sched_getaffinity((pid), sizeof(cpu_set_t), (ptr)) | |
c8f025f8 | 88 | #else |
e8462bd8 JA |
89 | #define fio_setaffinity(pid, cpumask) \ |
90 | sched_setaffinity((pid), &(cpumask)) | |
c8f025f8 JA |
91 | #define fio_getaffinity(pid, ptr) \ |
92 | sched_getaffinity((pid), (ptr)) | |
93 | #endif | |
be4ecfdf | 94 | |
1f4c0a4f JA |
95 | #define fio_cpu_clear(mask, cpu) (void) CPU_CLR((cpu), (mask)) |
96 | #define fio_cpu_set(mask, cpu) (void) CPU_SET((cpu), (mask)) | |
d2ce18b5 JA |
97 | |
98 | static inline int fio_cpuset_init(os_cpu_mask_t *mask) | |
99 | { | |
100 | CPU_ZERO(mask); | |
101 | return 0; | |
102 | } | |
103 | ||
104 | static inline int fio_cpuset_exit(os_cpu_mask_t *mask) | |
105 | { | |
106 | return 0; | |
107 | } | |
6d459ee7 JA |
108 | |
109 | #define FIO_MAX_CPUS CPU_SETSIZE | |
4d8947de | 110 | |
ebac4655 JA |
111 | static inline int ioprio_set(int which, int who, int ioprio) |
112 | { | |
113 | return syscall(__NR_ioprio_set, which, who, ioprio); | |
114 | } | |
115 | ||
47f767c1 JA |
116 | static inline int gettid(void) |
117 | { | |
118 | return syscall(__NR_gettid); | |
119 | } | |
120 | ||
97fbdfa1 JA |
121 | /* |
122 | * Just check for SPLICE_F_MOVE, if that isn't there, assume the others | |
123 | * aren't either. | |
124 | */ | |
125 | #ifndef SPLICE_F_MOVE | |
126 | #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */ | |
127 | #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */ | |
128 | /* we may still block on the fd we splice */ | |
129 | /* from/to, of course */ | |
130 | #define SPLICE_F_MORE (0x04) /* expect more data */ | |
131 | #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */ | |
8756e4d4 JA |
132 | |
133 | static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out, | |
495ee9b6 | 134 | size_t len, unsigned int flags) |
8756e4d4 | 135 | { |
97fbdfa1 | 136 | return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags); |
8756e4d4 JA |
137 | } |
138 | ||
139 | static inline int tee(int fdin, int fdout, size_t len, unsigned int flags) | |
140 | { | |
97fbdfa1 | 141 | return syscall(__NR_sys_tee, fdin, fdout, len, flags); |
8756e4d4 JA |
142 | } |
143 | ||
144 | static inline int vmsplice(int fd, const struct iovec *iov, | |
145 | unsigned long nr_segs, unsigned int flags) | |
146 | { | |
97fbdfa1 | 147 | return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags); |
8756e4d4 | 148 | } |
97fbdfa1 | 149 | #endif |
8756e4d4 | 150 | |
3feedc60 JA |
151 | #define SPLICE_DEF_SIZE (64*1024) |
152 | ||
b6959b55 | 153 | #ifdef FIO_HAVE_SYSLET |
bf0dc8fa IM |
154 | |
155 | struct syslet_uatom; | |
156 | struct async_head_user; | |
157 | ||
a4f4fdd7 JA |
158 | /* |
159 | * syslet stuff | |
160 | */ | |
bf0dc8fa IM |
161 | static inline struct syslet_uatom * |
162 | async_exec(struct syslet_uatom *atom, struct async_head_user *ahu) | |
a4f4fdd7 | 163 | { |
2b52511f | 164 | return (struct syslet_uatom *) syscall(__NR_async_exec, atom, ahu); |
a4f4fdd7 JA |
165 | } |
166 | ||
bf0dc8fa IM |
167 | static inline long |
168 | async_wait(unsigned long min_wait_events, unsigned long user_ring_idx, | |
169 | struct async_head_user *ahu) | |
a4f4fdd7 | 170 | { |
bf0dc8fa IM |
171 | return syscall(__NR_async_wait, min_wait_events, |
172 | user_ring_idx, ahu); | |
a4f4fdd7 JA |
173 | } |
174 | ||
7756b0d0 | 175 | static inline long async_thread(void *event, struct async_head_user *ahu) |
a4f4fdd7 | 176 | { |
7756b0d0 | 177 | return syscall(__NR_async_thread, event, ahu); |
a4f4fdd7 JA |
178 | } |
179 | ||
180 | static inline long umem_add(unsigned long *uptr, unsigned long inc) | |
181 | { | |
182 | return syscall(__NR_umem_add, uptr, inc); | |
183 | } | |
b6959b55 | 184 | #endif /* FIO_HAVE_SYSLET */ |
a4f4fdd7 | 185 | |
6cefbe33 JA |
186 | enum { |
187 | IOPRIO_CLASS_NONE, | |
188 | IOPRIO_CLASS_RT, | |
189 | IOPRIO_CLASS_BE, | |
190 | IOPRIO_CLASS_IDLE, | |
191 | }; | |
192 | ||
ebac4655 JA |
193 | enum { |
194 | IOPRIO_WHO_PROCESS = 1, | |
195 | IOPRIO_WHO_PGRP, | |
196 | IOPRIO_WHO_USER, | |
197 | }; | |
198 | ||
6cefbe33 | 199 | #define IOPRIO_BITS 16 |
ebac4655 JA |
200 | #define IOPRIO_CLASS_SHIFT 13 |
201 | ||
202 | #ifndef BLKGETSIZE64 | |
203 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) | |
204 | #endif | |
205 | ||
e5b401d4 JA |
206 | #ifndef BLKFLSBUF |
207 | #define BLKFLSBUF _IO(0x12,97) | |
208 | #endif | |
209 | ||
a5f3027c JA |
210 | #ifndef BLKDISCARD |
211 | #define BLKDISCARD _IO(0x12,119) | |
212 | #endif | |
213 | ||
e2e58886 | 214 | static inline int blockdev_invalidate_cache(struct fio_file *f) |
e5b401d4 | 215 | { |
ecc314ba | 216 | return ioctl(f->fd, BLKFLSBUF); |
e5b401d4 JA |
217 | } |
218 | ||
ecc314ba | 219 | static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes) |
ebac4655 | 220 | { |
ecc314ba | 221 | if (!ioctl(f->fd, BLKGETSIZE64, bytes)) |
ebac4655 JA |
222 | return 0; |
223 | ||
224 | return errno; | |
225 | } | |
226 | ||
32cd46a0 JA |
227 | static inline unsigned long long os_phys_mem(void) |
228 | { | |
229 | long pagesize, pages; | |
230 | ||
231 | pagesize = sysconf(_SC_PAGESIZE); | |
232 | pages = sysconf(_SC_PHYS_PAGES); | |
233 | if (pages == -1 || pagesize == -1) | |
234 | return 0; | |
235 | ||
236 | return (unsigned long long) pages * (unsigned long long) pagesize; | |
237 | } | |
238 | ||
6dfd46b9 JA |
239 | static inline void os_random_seed(unsigned long seed, os_random_state_t *rs) |
240 | { | |
241 | srand48_r(seed, rs); | |
242 | } | |
243 | ||
244 | static inline long os_random_long(os_random_state_t *rs) | |
245 | { | |
246 | long val; | |
247 | ||
248 | lrand48_r(rs, &val); | |
249 | return val; | |
250 | } | |
251 | ||
8cc7afa9 | 252 | static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev) |
07e5b264 JA |
253 | { |
254 | struct raw_config_request rq; | |
255 | int fd; | |
256 | ||
257 | if (major(dev) != RAW_MAJOR) | |
8cc7afa9 | 258 | return 1; |
07e5b264 JA |
259 | |
260 | /* | |
261 | * we should be able to find /dev/rawctl or /dev/raw/rawctl | |
262 | */ | |
263 | fd = open("/dev/rawctl", O_RDONLY); | |
264 | if (fd < 0) { | |
265 | fd = open("/dev/raw/rawctl", O_RDONLY); | |
266 | if (fd < 0) | |
8cc7afa9 | 267 | return 1; |
07e5b264 JA |
268 | } |
269 | ||
270 | rq.raw_minor = minor(dev); | |
271 | if (ioctl(fd, RAW_GETBIND, &rq) < 0) { | |
272 | close(fd); | |
8cc7afa9 | 273 | return 1; |
07e5b264 JA |
274 | } |
275 | ||
276 | close(fd); | |
277 | *majdev = rq.block_major; | |
278 | *mindev = rq.block_minor; | |
8cc7afa9 | 279 | return 0; |
07e5b264 JA |
280 | } |
281 | ||
5b6f5c66 | 282 | #ifdef O_NOATIME |
5921e80c | 283 | #define FIO_O_NOATIME O_NOATIME |
5b6f5c66 JA |
284 | #else |
285 | #define FIO_O_NOATIME 0 | |
286 | #endif | |
5921e80c | 287 | |
a1c58075 JA |
288 | #ifdef MADV_REMOVE |
289 | #define FIO_MADV_FREE MADV_REMOVE | |
290 | #endif | |
291 | ||
610a730c JA |
292 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
293 | #define FIO_LITTLE_ENDIAN | |
294 | #elif __BYTE_ORDER == __BIG_ENDIAN | |
295 | #define FIO_BIG_ENDIAN | |
296 | #else | |
297 | #error "Unknown endianness" | |
298 | #endif | |
299 | ||
ff245192 JA |
300 | #define fio_swap16(x) __bswap_16(x) |
301 | #define fio_swap32(x) __bswap_32(x) | |
302 | #define fio_swap64(x) __bswap_64(x) | |
303 | ||
eb7ccf38 JA |
304 | #define CACHE_LINE_FILE \ |
305 | "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size" | |
306 | ||
307 | static inline int arch_cache_line_size(void) | |
308 | { | |
309 | char size[32]; | |
310 | int fd, ret; | |
311 | ||
312 | fd = open(CACHE_LINE_FILE, O_RDONLY); | |
313 | if (fd < 0) | |
314 | return -1; | |
315 | ||
316 | ret = read(fd, size, sizeof(size)); | |
ec76f15a JA |
317 | |
318 | close(fd); | |
319 | ||
eb7ccf38 JA |
320 | if (ret <= 0) |
321 | return -1; | |
ec76f15a JA |
322 | else |
323 | return atoi(size); | |
eb7ccf38 JA |
324 | } |
325 | ||
2e3bd4c2 JA |
326 | static inline unsigned long long get_fs_size(const char *path) |
327 | { | |
328 | unsigned long long ret; | |
329 | struct statfs s; | |
330 | ||
331 | if (statfs(path, &s) < 0) | |
332 | return -1ULL; | |
333 | ||
334 | ret = s.f_bsize; | |
335 | ret *= (unsigned long long) s.f_bfree; | |
336 | return ret; | |
337 | } | |
338 | ||
a5f3027c JA |
339 | static inline int os_trim(int fd, unsigned long long start, |
340 | unsigned long long len) | |
341 | { | |
342 | uint64_t range[2]; | |
343 | ||
344 | range[0] = start; | |
345 | range[1] = len; | |
346 | ||
347 | if (!ioctl(fd, BLKDISCARD, range)) | |
348 | return 0; | |
349 | ||
350 | return errno; | |
351 | } | |
352 | ||
ebac4655 | 353 | #endif |