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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 JA |
16 | #include "indirect.h" |
17 | ||
ebac4655 JA |
18 | #define FIO_HAVE_LIBAIO |
19 | #define FIO_HAVE_POSIXAIO | |
20 | #define FIO_HAVE_FADVISE | |
21 | #define FIO_HAVE_CPU_AFFINITY | |
22 | #define FIO_HAVE_DISK_UTIL | |
23 | #define FIO_HAVE_SGIO | |
ba4f8923 | 24 | #define FIO_HAVE_IOPRIO |
8756e4d4 | 25 | #define FIO_HAVE_SPLICE |
22f78b32 | 26 | #define FIO_HAVE_IOSCHED_SWITCH |
2c0ecd28 | 27 | #define FIO_HAVE_ODIRECT |
74b025b0 | 28 | #define FIO_HAVE_HUGETLB |
07e5b264 | 29 | #define FIO_HAVE_RAWBIND |
5e62c22a | 30 | #define FIO_HAVE_BLKTRACE |
5921e80c | 31 | #define FIO_HAVE_STRSEP |
fffca02d | 32 | #define FIO_HAVE_FALLOCATE |
207cb0f0 | 33 | #define FIO_HAVE_POSIXAIO_FSYNC |
f356d01d | 34 | #define FIO_HAVE_PSHARED_MUTEX |
eb7ccf38 | 35 | #define FIO_HAVE_CL_SIZE |
a696fa2a | 36 | #define FIO_HAVE_CGROUPS |
c36d16f5 | 37 | #define FIO_HAVE_FDATASYNC |
44f29692 | 38 | #define FIO_HAVE_SYNC_FILE_RANGE |
2e3bd4c2 | 39 | #define FIO_HAVE_FS_STAT |
b6959b55 | 40 | |
dc873b6f | 41 | #define OS_MAP_ANON MAP_ANONYMOUS |
ebac4655 | 42 | |
4d8947de SL |
43 | #ifndef CLOCK_MONOTONIC |
44 | #define CLOCK_MONOTONIC 1 | |
45 | #endif | |
46 | ||
ebac4655 | 47 | typedef cpu_set_t os_cpu_mask_t; |
4e78e405 | 48 | |
6dfd46b9 | 49 | typedef struct drand48_data os_random_state_t; |
ebac4655 JA |
50 | |
51 | /* | |
52 | * we want fadvise64 really, but it's so tangled... later | |
53 | */ | |
4d8947de | 54 | #ifdef FIO_HAVE_FADVISE |
ebac4655 JA |
55 | #define fadvise(fd, off, len, advice) \ |
56 | posix_fadvise((fd), (off_t)(off), (len), (advice)) | |
4d8947de | 57 | #endif |
ebac4655 | 58 | |
c8f025f8 JA |
59 | /* |
60 | * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want | |
61 | * the affinity helpers to work. | |
62 | */ | |
63 | #ifndef GLIBC_2_3_2 | |
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)) | |
c8f025f8 | 68 | #else |
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 JA |
74 | |
75 | #define fio_cpu_clear(mask, cpu) CPU_CLR((cpu), (mask)) | |
6d459ee7 | 76 | #define fio_cpu_set(mask, cpu) CPU_SET((cpu), (mask)) |
d2ce18b5 JA |
77 | |
78 | static inline int fio_cpuset_init(os_cpu_mask_t *mask) | |
79 | { | |
80 | CPU_ZERO(mask); | |
81 | return 0; | |
82 | } | |
83 | ||
84 | static inline int fio_cpuset_exit(os_cpu_mask_t *mask) | |
85 | { | |
86 | return 0; | |
87 | } | |
6d459ee7 JA |
88 | |
89 | #define FIO_MAX_CPUS CPU_SETSIZE | |
4d8947de | 90 | |
ebac4655 JA |
91 | static inline int ioprio_set(int which, int who, int ioprio) |
92 | { | |
93 | return syscall(__NR_ioprio_set, which, who, ioprio); | |
94 | } | |
95 | ||
97fbdfa1 JA |
96 | /* |
97 | * Just check for SPLICE_F_MOVE, if that isn't there, assume the others | |
98 | * aren't either. | |
99 | */ | |
100 | #ifndef SPLICE_F_MOVE | |
101 | #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */ | |
102 | #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */ | |
103 | /* we may still block on the fd we splice */ | |
104 | /* from/to, of course */ | |
105 | #define SPLICE_F_MORE (0x04) /* expect more data */ | |
106 | #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */ | |
8756e4d4 JA |
107 | |
108 | static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out, | |
495ee9b6 | 109 | size_t len, unsigned int flags) |
8756e4d4 | 110 | { |
97fbdfa1 | 111 | return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags); |
8756e4d4 JA |
112 | } |
113 | ||
114 | static inline int tee(int fdin, int fdout, size_t len, unsigned int flags) | |
115 | { | |
97fbdfa1 | 116 | return syscall(__NR_sys_tee, fdin, fdout, len, flags); |
8756e4d4 JA |
117 | } |
118 | ||
119 | static inline int vmsplice(int fd, const struct iovec *iov, | |
120 | unsigned long nr_segs, unsigned int flags) | |
121 | { | |
97fbdfa1 | 122 | return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags); |
8756e4d4 | 123 | } |
97fbdfa1 | 124 | #endif |
8756e4d4 | 125 | |
3feedc60 JA |
126 | #define SPLICE_DEF_SIZE (64*1024) |
127 | ||
b6959b55 | 128 | #ifdef FIO_HAVE_SYSLET |
bf0dc8fa IM |
129 | |
130 | struct syslet_uatom; | |
131 | struct async_head_user; | |
132 | ||
a4f4fdd7 JA |
133 | /* |
134 | * syslet stuff | |
135 | */ | |
bf0dc8fa IM |
136 | static inline struct syslet_uatom * |
137 | async_exec(struct syslet_uatom *atom, struct async_head_user *ahu) | |
a4f4fdd7 | 138 | { |
2b52511f | 139 | return (struct syslet_uatom *) syscall(__NR_async_exec, atom, ahu); |
a4f4fdd7 JA |
140 | } |
141 | ||
bf0dc8fa IM |
142 | static inline long |
143 | async_wait(unsigned long min_wait_events, unsigned long user_ring_idx, | |
144 | struct async_head_user *ahu) | |
a4f4fdd7 | 145 | { |
bf0dc8fa IM |
146 | return syscall(__NR_async_wait, min_wait_events, |
147 | user_ring_idx, ahu); | |
a4f4fdd7 JA |
148 | } |
149 | ||
7756b0d0 | 150 | static inline long async_thread(void *event, struct async_head_user *ahu) |
a4f4fdd7 | 151 | { |
7756b0d0 | 152 | return syscall(__NR_async_thread, event, ahu); |
a4f4fdd7 JA |
153 | } |
154 | ||
155 | static inline long umem_add(unsigned long *uptr, unsigned long inc) | |
156 | { | |
157 | return syscall(__NR_umem_add, uptr, inc); | |
158 | } | |
b6959b55 | 159 | #endif /* FIO_HAVE_SYSLET */ |
a4f4fdd7 | 160 | |
6cefbe33 JA |
161 | enum { |
162 | IOPRIO_CLASS_NONE, | |
163 | IOPRIO_CLASS_RT, | |
164 | IOPRIO_CLASS_BE, | |
165 | IOPRIO_CLASS_IDLE, | |
166 | }; | |
167 | ||
ebac4655 JA |
168 | enum { |
169 | IOPRIO_WHO_PROCESS = 1, | |
170 | IOPRIO_WHO_PGRP, | |
171 | IOPRIO_WHO_USER, | |
172 | }; | |
173 | ||
6cefbe33 | 174 | #define IOPRIO_BITS 16 |
ebac4655 JA |
175 | #define IOPRIO_CLASS_SHIFT 13 |
176 | ||
177 | #ifndef BLKGETSIZE64 | |
178 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) | |
179 | #endif | |
180 | ||
e5b401d4 JA |
181 | #ifndef BLKFLSBUF |
182 | #define BLKFLSBUF _IO(0x12,97) | |
183 | #endif | |
184 | ||
185 | static inline int blockdev_invalidate_cache(int fd) | |
186 | { | |
a16211bb | 187 | return ioctl(fd, BLKFLSBUF); |
e5b401d4 JA |
188 | } |
189 | ||
9104f874 | 190 | static inline int blockdev_size(int fd, unsigned long long *bytes) |
ebac4655 JA |
191 | { |
192 | if (!ioctl(fd, BLKGETSIZE64, bytes)) | |
193 | return 0; | |
194 | ||
195 | return errno; | |
196 | } | |
197 | ||
32cd46a0 JA |
198 | static inline unsigned long long os_phys_mem(void) |
199 | { | |
200 | long pagesize, pages; | |
201 | ||
202 | pagesize = sysconf(_SC_PAGESIZE); | |
203 | pages = sysconf(_SC_PHYS_PAGES); | |
204 | if (pages == -1 || pagesize == -1) | |
205 | return 0; | |
206 | ||
207 | return (unsigned long long) pages * (unsigned long long) pagesize; | |
208 | } | |
209 | ||
6dfd46b9 JA |
210 | static inline void os_random_seed(unsigned long seed, os_random_state_t *rs) |
211 | { | |
212 | srand48_r(seed, rs); | |
213 | } | |
214 | ||
215 | static inline long os_random_long(os_random_state_t *rs) | |
216 | { | |
217 | long val; | |
218 | ||
219 | lrand48_r(rs, &val); | |
220 | return val; | |
221 | } | |
222 | ||
8cc7afa9 | 223 | static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev) |
07e5b264 JA |
224 | { |
225 | struct raw_config_request rq; | |
226 | int fd; | |
227 | ||
228 | if (major(dev) != RAW_MAJOR) | |
8cc7afa9 | 229 | return 1; |
07e5b264 JA |
230 | |
231 | /* | |
232 | * we should be able to find /dev/rawctl or /dev/raw/rawctl | |
233 | */ | |
234 | fd = open("/dev/rawctl", O_RDONLY); | |
235 | if (fd < 0) { | |
236 | fd = open("/dev/raw/rawctl", O_RDONLY); | |
237 | if (fd < 0) | |
8cc7afa9 | 238 | return 1; |
07e5b264 JA |
239 | } |
240 | ||
241 | rq.raw_minor = minor(dev); | |
242 | if (ioctl(fd, RAW_GETBIND, &rq) < 0) { | |
243 | close(fd); | |
8cc7afa9 | 244 | return 1; |
07e5b264 JA |
245 | } |
246 | ||
247 | close(fd); | |
248 | *majdev = rq.block_major; | |
249 | *mindev = rq.block_minor; | |
8cc7afa9 | 250 | return 0; |
07e5b264 JA |
251 | } |
252 | ||
5b6f5c66 | 253 | #ifdef O_NOATIME |
5921e80c | 254 | #define FIO_O_NOATIME O_NOATIME |
5b6f5c66 JA |
255 | #else |
256 | #define FIO_O_NOATIME 0 | |
257 | #endif | |
5921e80c | 258 | |
a1c58075 JA |
259 | #ifdef MADV_REMOVE |
260 | #define FIO_MADV_FREE MADV_REMOVE | |
261 | #endif | |
262 | ||
eb7ccf38 JA |
263 | #define CACHE_LINE_FILE \ |
264 | "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size" | |
265 | ||
266 | static inline int arch_cache_line_size(void) | |
267 | { | |
268 | char size[32]; | |
269 | int fd, ret; | |
270 | ||
271 | fd = open(CACHE_LINE_FILE, O_RDONLY); | |
272 | if (fd < 0) | |
273 | return -1; | |
274 | ||
275 | ret = read(fd, size, sizeof(size)); | |
ec76f15a JA |
276 | |
277 | close(fd); | |
278 | ||
eb7ccf38 JA |
279 | if (ret <= 0) |
280 | return -1; | |
ec76f15a JA |
281 | else |
282 | return atoi(size); | |
eb7ccf38 JA |
283 | } |
284 | ||
2e3bd4c2 JA |
285 | static inline unsigned long long get_fs_size(const char *path) |
286 | { | |
287 | unsigned long long ret; | |
288 | struct statfs s; | |
289 | ||
290 | if (statfs(path, &s) < 0) | |
291 | return -1ULL; | |
292 | ||
293 | ret = s.f_bsize; | |
294 | ret *= (unsigned long long) s.f_bfree; | |
295 | return ret; | |
296 | } | |
297 | ||
ebac4655 | 298 | #endif |