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ebac4655 JA |
1 | #ifndef FIO_OS_LINUX_H |
2 | #define FIO_OS_LINUX_H | |
3 | ||
4 | #include <sys/ioctl.h> | |
8756e4d4 | 5 | #include <sys/uio.h> |
3c39a379 | 6 | #include <sys/syscall.h> |
2e3bd4c2 | 7 | #include <sys/vfs.h> |
3c39a379 | 8 | #include <unistd.h> |
97fbdfa1 | 9 | #include <fcntl.h> |
3c2d93ed | 10 | #include <errno.h> |
d09913c2 | 11 | #include <sched.h> |
ea421790 | 12 | #include <linux/unistd.h> |
07e5b264 JA |
13 | #include <linux/raw.h> |
14 | #include <linux/major.h> | |
ebac4655 | 15 | |
f3de88a7 | 16 | #include "indirect.h" |
79a43187 | 17 | #include "binject.h" |
e2e58886 | 18 | #include "../file.h" |
f3de88a7 | 19 | |
ebac4655 JA |
20 | #define FIO_HAVE_LIBAIO |
21 | #define FIO_HAVE_POSIXAIO | |
22 | #define FIO_HAVE_FADVISE | |
23 | #define FIO_HAVE_CPU_AFFINITY | |
24 | #define FIO_HAVE_DISK_UTIL | |
25 | #define FIO_HAVE_SGIO | |
ba4f8923 | 26 | #define FIO_HAVE_IOPRIO |
8756e4d4 | 27 | #define FIO_HAVE_SPLICE |
22f78b32 | 28 | #define FIO_HAVE_IOSCHED_SWITCH |
2c0ecd28 | 29 | #define FIO_HAVE_ODIRECT |
74b025b0 | 30 | #define FIO_HAVE_HUGETLB |
07e5b264 | 31 | #define FIO_HAVE_RAWBIND |
5e62c22a | 32 | #define FIO_HAVE_BLKTRACE |
5921e80c | 33 | #define FIO_HAVE_STRSEP |
fffca02d | 34 | #define FIO_HAVE_FALLOCATE |
207cb0f0 | 35 | #define FIO_HAVE_POSIXAIO_FSYNC |
f356d01d | 36 | #define FIO_HAVE_PSHARED_MUTEX |
eb7ccf38 | 37 | #define FIO_HAVE_CL_SIZE |
a696fa2a | 38 | #define FIO_HAVE_CGROUPS |
c36d16f5 | 39 | #define FIO_HAVE_FDATASYNC |
2e3bd4c2 | 40 | #define FIO_HAVE_FS_STAT |
a5f3027c | 41 | #define FIO_HAVE_TRIM |
79a43187 | 42 | #define FIO_HAVE_BINJECT |
ecc314ba | 43 | #define FIO_HAVE_CLOCK_MONOTONIC |
47f767c1 | 44 | #define FIO_HAVE_GETTID |
b6959b55 | 45 | |
804bb9a1 JA |
46 | /* |
47 | * Can only enable this for newer glibcs, or the header and defines are | |
48 | * missing | |
49 | */ | |
50 | #if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 6 | |
51 | #define FIO_HAVE_LINUX_FALLOCATE | |
52 | #endif | |
53 | ||
093729f7 JA |
54 | #ifdef SYNC_FILE_RANGE_WAIT_BEFORE |
55 | #define FIO_HAVE_SYNC_FILE_RANGE | |
56 | #endif | |
57 | ||
dc873b6f | 58 | #define OS_MAP_ANON MAP_ANONYMOUS |
ebac4655 | 59 | |
4d8947de SL |
60 | #ifndef CLOCK_MONOTONIC |
61 | #define CLOCK_MONOTONIC 1 | |
62 | #endif | |
63 | ||
ebac4655 | 64 | typedef cpu_set_t os_cpu_mask_t; |
4e78e405 | 65 | |
6dfd46b9 | 66 | typedef struct drand48_data os_random_state_t; |
ebac4655 JA |
67 | |
68 | /* | |
69 | * we want fadvise64 really, but it's so tangled... later | |
70 | */ | |
4d8947de | 71 | #ifdef FIO_HAVE_FADVISE |
ebac4655 JA |
72 | #define fadvise(fd, off, len, advice) \ |
73 | posix_fadvise((fd), (off_t)(off), (len), (advice)) | |
4d8947de | 74 | #endif |
ebac4655 | 75 | |
c8f025f8 JA |
76 | /* |
77 | * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want | |
78 | * the affinity helpers to work. | |
79 | */ | |
80 | #ifndef GLIBC_2_3_2 | |
e8462bd8 JA |
81 | #define fio_setaffinity(pid, cpumask) \ |
82 | sched_setaffinity((pid), sizeof(cpumask), &(cpumask)) | |
ebac4655 JA |
83 | #define fio_getaffinity(pid, ptr) \ |
84 | sched_getaffinity((pid), sizeof(cpu_set_t), (ptr)) | |
c8f025f8 | 85 | #else |
e8462bd8 JA |
86 | #define fio_setaffinity(pid, cpumask) \ |
87 | sched_setaffinity((pid), &(cpumask)) | |
c8f025f8 JA |
88 | #define fio_getaffinity(pid, ptr) \ |
89 | sched_getaffinity((pid), (ptr)) | |
90 | #endif | |
be4ecfdf JA |
91 | |
92 | #define fio_cpu_clear(mask, cpu) CPU_CLR((cpu), (mask)) | |
6d459ee7 | 93 | #define fio_cpu_set(mask, cpu) CPU_SET((cpu), (mask)) |
d2ce18b5 JA |
94 | |
95 | static inline int fio_cpuset_init(os_cpu_mask_t *mask) | |
96 | { | |
97 | CPU_ZERO(mask); | |
98 | return 0; | |
99 | } | |
100 | ||
101 | static inline int fio_cpuset_exit(os_cpu_mask_t *mask) | |
102 | { | |
103 | return 0; | |
104 | } | |
6d459ee7 JA |
105 | |
106 | #define FIO_MAX_CPUS CPU_SETSIZE | |
4d8947de | 107 | |
ebac4655 JA |
108 | static inline int ioprio_set(int which, int who, int ioprio) |
109 | { | |
110 | return syscall(__NR_ioprio_set, which, who, ioprio); | |
111 | } | |
112 | ||
47f767c1 JA |
113 | static inline int gettid(void) |
114 | { | |
115 | return syscall(__NR_gettid); | |
116 | } | |
117 | ||
97fbdfa1 JA |
118 | /* |
119 | * Just check for SPLICE_F_MOVE, if that isn't there, assume the others | |
120 | * aren't either. | |
121 | */ | |
122 | #ifndef SPLICE_F_MOVE | |
123 | #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */ | |
124 | #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */ | |
125 | /* we may still block on the fd we splice */ | |
126 | /* from/to, of course */ | |
127 | #define SPLICE_F_MORE (0x04) /* expect more data */ | |
128 | #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */ | |
8756e4d4 JA |
129 | |
130 | static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out, | |
495ee9b6 | 131 | size_t len, unsigned int flags) |
8756e4d4 | 132 | { |
97fbdfa1 | 133 | return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags); |
8756e4d4 JA |
134 | } |
135 | ||
136 | static inline int tee(int fdin, int fdout, size_t len, unsigned int flags) | |
137 | { | |
97fbdfa1 | 138 | return syscall(__NR_sys_tee, fdin, fdout, len, flags); |
8756e4d4 JA |
139 | } |
140 | ||
141 | static inline int vmsplice(int fd, const struct iovec *iov, | |
142 | unsigned long nr_segs, unsigned int flags) | |
143 | { | |
97fbdfa1 | 144 | return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags); |
8756e4d4 | 145 | } |
97fbdfa1 | 146 | #endif |
8756e4d4 | 147 | |
3feedc60 JA |
148 | #define SPLICE_DEF_SIZE (64*1024) |
149 | ||
b6959b55 | 150 | #ifdef FIO_HAVE_SYSLET |
bf0dc8fa IM |
151 | |
152 | struct syslet_uatom; | |
153 | struct async_head_user; | |
154 | ||
a4f4fdd7 JA |
155 | /* |
156 | * syslet stuff | |
157 | */ | |
bf0dc8fa IM |
158 | static inline struct syslet_uatom * |
159 | async_exec(struct syslet_uatom *atom, struct async_head_user *ahu) | |
a4f4fdd7 | 160 | { |
2b52511f | 161 | return (struct syslet_uatom *) syscall(__NR_async_exec, atom, ahu); |
a4f4fdd7 JA |
162 | } |
163 | ||
bf0dc8fa IM |
164 | static inline long |
165 | async_wait(unsigned long min_wait_events, unsigned long user_ring_idx, | |
166 | struct async_head_user *ahu) | |
a4f4fdd7 | 167 | { |
bf0dc8fa IM |
168 | return syscall(__NR_async_wait, min_wait_events, |
169 | user_ring_idx, ahu); | |
a4f4fdd7 JA |
170 | } |
171 | ||
7756b0d0 | 172 | static inline long async_thread(void *event, struct async_head_user *ahu) |
a4f4fdd7 | 173 | { |
7756b0d0 | 174 | return syscall(__NR_async_thread, event, ahu); |
a4f4fdd7 JA |
175 | } |
176 | ||
177 | static inline long umem_add(unsigned long *uptr, unsigned long inc) | |
178 | { | |
179 | return syscall(__NR_umem_add, uptr, inc); | |
180 | } | |
b6959b55 | 181 | #endif /* FIO_HAVE_SYSLET */ |
a4f4fdd7 | 182 | |
6cefbe33 JA |
183 | enum { |
184 | IOPRIO_CLASS_NONE, | |
185 | IOPRIO_CLASS_RT, | |
186 | IOPRIO_CLASS_BE, | |
187 | IOPRIO_CLASS_IDLE, | |
188 | }; | |
189 | ||
ebac4655 JA |
190 | enum { |
191 | IOPRIO_WHO_PROCESS = 1, | |
192 | IOPRIO_WHO_PGRP, | |
193 | IOPRIO_WHO_USER, | |
194 | }; | |
195 | ||
6cefbe33 | 196 | #define IOPRIO_BITS 16 |
ebac4655 JA |
197 | #define IOPRIO_CLASS_SHIFT 13 |
198 | ||
199 | #ifndef BLKGETSIZE64 | |
200 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) | |
201 | #endif | |
202 | ||
e5b401d4 JA |
203 | #ifndef BLKFLSBUF |
204 | #define BLKFLSBUF _IO(0x12,97) | |
205 | #endif | |
206 | ||
a5f3027c JA |
207 | #ifndef BLKDISCARD |
208 | #define BLKDISCARD _IO(0x12,119) | |
209 | #endif | |
210 | ||
e2e58886 | 211 | static inline int blockdev_invalidate_cache(struct fio_file *f) |
e5b401d4 | 212 | { |
ecc314ba | 213 | return ioctl(f->fd, BLKFLSBUF); |
e5b401d4 JA |
214 | } |
215 | ||
ecc314ba | 216 | static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes) |
ebac4655 | 217 | { |
ecc314ba | 218 | if (!ioctl(f->fd, BLKGETSIZE64, bytes)) |
ebac4655 JA |
219 | return 0; |
220 | ||
221 | return errno; | |
222 | } | |
223 | ||
32cd46a0 JA |
224 | static inline unsigned long long os_phys_mem(void) |
225 | { | |
226 | long pagesize, pages; | |
227 | ||
228 | pagesize = sysconf(_SC_PAGESIZE); | |
229 | pages = sysconf(_SC_PHYS_PAGES); | |
230 | if (pages == -1 || pagesize == -1) | |
231 | return 0; | |
232 | ||
233 | return (unsigned long long) pages * (unsigned long long) pagesize; | |
234 | } | |
235 | ||
6dfd46b9 JA |
236 | static inline void os_random_seed(unsigned long seed, os_random_state_t *rs) |
237 | { | |
238 | srand48_r(seed, rs); | |
239 | } | |
240 | ||
241 | static inline long os_random_long(os_random_state_t *rs) | |
242 | { | |
243 | long val; | |
244 | ||
245 | lrand48_r(rs, &val); | |
246 | return val; | |
247 | } | |
248 | ||
8cc7afa9 | 249 | static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev) |
07e5b264 JA |
250 | { |
251 | struct raw_config_request rq; | |
252 | int fd; | |
253 | ||
254 | if (major(dev) != RAW_MAJOR) | |
8cc7afa9 | 255 | return 1; |
07e5b264 JA |
256 | |
257 | /* | |
258 | * we should be able to find /dev/rawctl or /dev/raw/rawctl | |
259 | */ | |
260 | fd = open("/dev/rawctl", O_RDONLY); | |
261 | if (fd < 0) { | |
262 | fd = open("/dev/raw/rawctl", O_RDONLY); | |
263 | if (fd < 0) | |
8cc7afa9 | 264 | return 1; |
07e5b264 JA |
265 | } |
266 | ||
267 | rq.raw_minor = minor(dev); | |
268 | if (ioctl(fd, RAW_GETBIND, &rq) < 0) { | |
269 | close(fd); | |
8cc7afa9 | 270 | return 1; |
07e5b264 JA |
271 | } |
272 | ||
273 | close(fd); | |
274 | *majdev = rq.block_major; | |
275 | *mindev = rq.block_minor; | |
8cc7afa9 | 276 | return 0; |
07e5b264 JA |
277 | } |
278 | ||
5b6f5c66 | 279 | #ifdef O_NOATIME |
5921e80c | 280 | #define FIO_O_NOATIME O_NOATIME |
5b6f5c66 JA |
281 | #else |
282 | #define FIO_O_NOATIME 0 | |
283 | #endif | |
5921e80c | 284 | |
a1c58075 JA |
285 | #ifdef MADV_REMOVE |
286 | #define FIO_MADV_FREE MADV_REMOVE | |
287 | #endif | |
288 | ||
eb7ccf38 JA |
289 | #define CACHE_LINE_FILE \ |
290 | "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size" | |
291 | ||
292 | static inline int arch_cache_line_size(void) | |
293 | { | |
294 | char size[32]; | |
295 | int fd, ret; | |
296 | ||
297 | fd = open(CACHE_LINE_FILE, O_RDONLY); | |
298 | if (fd < 0) | |
299 | return -1; | |
300 | ||
301 | ret = read(fd, size, sizeof(size)); | |
ec76f15a JA |
302 | |
303 | close(fd); | |
304 | ||
eb7ccf38 JA |
305 | if (ret <= 0) |
306 | return -1; | |
ec76f15a JA |
307 | else |
308 | return atoi(size); | |
eb7ccf38 JA |
309 | } |
310 | ||
2e3bd4c2 JA |
311 | static inline unsigned long long get_fs_size(const char *path) |
312 | { | |
313 | unsigned long long ret; | |
314 | struct statfs s; | |
315 | ||
316 | if (statfs(path, &s) < 0) | |
317 | return -1ULL; | |
318 | ||
319 | ret = s.f_bsize; | |
320 | ret *= (unsigned long long) s.f_bfree; | |
321 | return ret; | |
322 | } | |
323 | ||
a5f3027c JA |
324 | static inline int os_trim(int fd, unsigned long long start, |
325 | unsigned long long len) | |
326 | { | |
327 | uint64_t range[2]; | |
328 | ||
329 | range[0] = start; | |
330 | range[1] = len; | |
331 | ||
332 | if (!ioctl(fd, BLKDISCARD, range)) | |
333 | return 0; | |
334 | ||
335 | return errno; | |
336 | } | |
337 | ||
ebac4655 | 338 | #endif |