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