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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> |
39b93568 | 10 | #include <sys/mman.h> |
3c39a379 | 11 | #include <unistd.h> |
97fbdfa1 | 12 | #include <fcntl.h> |
3c2d93ed | 13 | #include <errno.h> |
d09913c2 | 14 | #include <sched.h> |
ea421790 | 15 | #include <linux/unistd.h> |
07e5b264 JA |
16 | #include <linux/raw.h> |
17 | #include <linux/major.h> | |
df73aab1 | 18 | #include <byteswap.h> |
ebac4655 | 19 | |
79a43187 | 20 | #include "binject.h" |
e2e58886 | 21 | #include "../file.h" |
f3de88a7 | 22 | |
ebac4655 JA |
23 | #define FIO_HAVE_CPU_AFFINITY |
24 | #define FIO_HAVE_DISK_UTIL | |
25 | #define FIO_HAVE_SGIO | |
ba4f8923 | 26 | #define FIO_HAVE_IOPRIO |
22f78b32 | 27 | #define FIO_HAVE_IOSCHED_SWITCH |
2c0ecd28 | 28 | #define FIO_HAVE_ODIRECT |
74b025b0 | 29 | #define FIO_HAVE_HUGETLB |
07e5b264 | 30 | #define FIO_HAVE_RAWBIND |
5e62c22a | 31 | #define FIO_HAVE_BLKTRACE |
f356d01d | 32 | #define FIO_HAVE_PSHARED_MUTEX |
eb7ccf38 | 33 | #define FIO_HAVE_CL_SIZE |
a696fa2a | 34 | #define FIO_HAVE_CGROUPS |
2e3bd4c2 | 35 | #define FIO_HAVE_FS_STAT |
a5f3027c | 36 | #define FIO_HAVE_TRIM |
79a43187 | 37 | #define FIO_HAVE_BINJECT |
47f767c1 | 38 | #define FIO_HAVE_GETTID |
93bcfd20 | 39 | #define FIO_USE_GENERIC_INIT_RANDOM_STATE |
b6959b55 | 40 | |
39b93568 JA |
41 | #ifdef MAP_HUGETLB |
42 | #define FIO_HAVE_MMAP_HUGE | |
43 | #endif | |
44 | ||
dc873b6f | 45 | #define OS_MAP_ANON MAP_ANONYMOUS |
ebac4655 JA |
46 | |
47 | typedef cpu_set_t os_cpu_mask_t; | |
4e78e405 | 48 | |
6dfd46b9 | 49 | typedef struct drand48_data os_random_state_t; |
ebac4655 | 50 | |
67bf9823 | 51 | #ifdef CONFIG_3ARG_AFFINITY |
e8462bd8 JA |
52 | #define fio_setaffinity(pid, cpumask) \ |
53 | sched_setaffinity((pid), sizeof(cpumask), &(cpumask)) | |
ebac4655 JA |
54 | #define fio_getaffinity(pid, ptr) \ |
55 | sched_getaffinity((pid), sizeof(cpu_set_t), (ptr)) | |
67bf9823 | 56 | #elif defined(CONFIG_2ARG_AFFINITY) |
e8462bd8 JA |
57 | #define fio_setaffinity(pid, cpumask) \ |
58 | sched_setaffinity((pid), &(cpumask)) | |
c8f025f8 JA |
59 | #define fio_getaffinity(pid, ptr) \ |
60 | sched_getaffinity((pid), (ptr)) | |
61 | #endif | |
be4ecfdf | 62 | |
1f4c0a4f JA |
63 | #define fio_cpu_clear(mask, cpu) (void) CPU_CLR((cpu), (mask)) |
64 | #define fio_cpu_set(mask, cpu) (void) CPU_SET((cpu), (mask)) | |
50b5860b | 65 | #define fio_cpu_isset(mask, cpu) CPU_ISSET((cpu), (mask)) |
d004a209 | 66 | #define fio_cpu_count(mask) CPU_COUNT((mask)) |
d2ce18b5 JA |
67 | |
68 | static inline int fio_cpuset_init(os_cpu_mask_t *mask) | |
69 | { | |
70 | CPU_ZERO(mask); | |
71 | return 0; | |
72 | } | |
73 | ||
74 | static inline int fio_cpuset_exit(os_cpu_mask_t *mask) | |
75 | { | |
76 | return 0; | |
77 | } | |
6d459ee7 JA |
78 | |
79 | #define FIO_MAX_CPUS CPU_SETSIZE | |
4d8947de | 80 | |
28727df7 JA |
81 | enum { |
82 | IOPRIO_CLASS_NONE, | |
83 | IOPRIO_CLASS_RT, | |
84 | IOPRIO_CLASS_BE, | |
85 | IOPRIO_CLASS_IDLE, | |
86 | }; | |
87 | ||
88 | enum { | |
89 | IOPRIO_WHO_PROCESS = 1, | |
90 | IOPRIO_WHO_PGRP, | |
91 | IOPRIO_WHO_USER, | |
92 | }; | |
93 | ||
94 | #define IOPRIO_BITS 16 | |
95 | #define IOPRIO_CLASS_SHIFT 13 | |
96 | ||
97 | static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio) | |
ebac4655 | 98 | { |
28727df7 JA |
99 | /* |
100 | * If no class is set, assume BE | |
101 | */ | |
102 | if (!ioprio_class) | |
103 | ioprio_class = IOPRIO_CLASS_BE; | |
104 | ||
105 | ioprio |= ioprio_class << IOPRIO_CLASS_SHIFT; | |
ebac4655 JA |
106 | return syscall(__NR_ioprio_set, which, who, ioprio); |
107 | } | |
108 | ||
47f767c1 JA |
109 | static inline int gettid(void) |
110 | { | |
111 | return syscall(__NR_gettid); | |
112 | } | |
113 | ||
3feedc60 JA |
114 | #define SPLICE_DEF_SIZE (64*1024) |
115 | ||
ebac4655 JA |
116 | #ifndef BLKGETSIZE64 |
117 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) | |
118 | #endif | |
119 | ||
e5b401d4 JA |
120 | #ifndef BLKFLSBUF |
121 | #define BLKFLSBUF _IO(0x12,97) | |
122 | #endif | |
123 | ||
a5f3027c JA |
124 | #ifndef BLKDISCARD |
125 | #define BLKDISCARD _IO(0x12,119) | |
126 | #endif | |
127 | ||
e2e58886 | 128 | static inline int blockdev_invalidate_cache(struct fio_file *f) |
e5b401d4 | 129 | { |
ecc314ba | 130 | return ioctl(f->fd, BLKFLSBUF); |
e5b401d4 JA |
131 | } |
132 | ||
ecc314ba | 133 | static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes) |
ebac4655 | 134 | { |
ecc314ba | 135 | if (!ioctl(f->fd, BLKGETSIZE64, bytes)) |
ebac4655 JA |
136 | return 0; |
137 | ||
138 | return errno; | |
139 | } | |
140 | ||
32cd46a0 JA |
141 | static inline unsigned long long os_phys_mem(void) |
142 | { | |
143 | long pagesize, pages; | |
144 | ||
145 | pagesize = sysconf(_SC_PAGESIZE); | |
146 | pages = sysconf(_SC_PHYS_PAGES); | |
147 | if (pages == -1 || pagesize == -1) | |
148 | return 0; | |
149 | ||
150 | return (unsigned long long) pages * (unsigned long long) pagesize; | |
151 | } | |
152 | ||
6dfd46b9 JA |
153 | static inline void os_random_seed(unsigned long seed, os_random_state_t *rs) |
154 | { | |
155 | srand48_r(seed, rs); | |
156 | } | |
157 | ||
158 | static inline long os_random_long(os_random_state_t *rs) | |
159 | { | |
160 | long val; | |
161 | ||
162 | lrand48_r(rs, &val); | |
163 | return val; | |
164 | } | |
165 | ||
8cc7afa9 | 166 | static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev) |
07e5b264 JA |
167 | { |
168 | struct raw_config_request rq; | |
169 | int fd; | |
170 | ||
171 | if (major(dev) != RAW_MAJOR) | |
8cc7afa9 | 172 | return 1; |
07e5b264 JA |
173 | |
174 | /* | |
175 | * we should be able to find /dev/rawctl or /dev/raw/rawctl | |
176 | */ | |
177 | fd = open("/dev/rawctl", O_RDONLY); | |
178 | if (fd < 0) { | |
179 | fd = open("/dev/raw/rawctl", O_RDONLY); | |
180 | if (fd < 0) | |
8cc7afa9 | 181 | return 1; |
07e5b264 JA |
182 | } |
183 | ||
184 | rq.raw_minor = minor(dev); | |
185 | if (ioctl(fd, RAW_GETBIND, &rq) < 0) { | |
186 | close(fd); | |
8cc7afa9 | 187 | return 1; |
07e5b264 JA |
188 | } |
189 | ||
190 | close(fd); | |
191 | *majdev = rq.block_major; | |
192 | *mindev = rq.block_minor; | |
8cc7afa9 | 193 | return 0; |
07e5b264 JA |
194 | } |
195 | ||
5b6f5c66 | 196 | #ifdef O_NOATIME |
5921e80c | 197 | #define FIO_O_NOATIME O_NOATIME |
5b6f5c66 JA |
198 | #else |
199 | #define FIO_O_NOATIME 0 | |
200 | #endif | |
5921e80c | 201 | |
d01612f3 CM |
202 | #ifdef O_ATOMIC |
203 | #define OS_O_ATOMIC O_ATOMIC | |
204 | #else | |
205 | #define OS_O_ATOMIC 040000000 | |
206 | #endif | |
207 | ||
a1c58075 JA |
208 | #ifdef MADV_REMOVE |
209 | #define FIO_MADV_FREE MADV_REMOVE | |
210 | #endif | |
211 | ||
df73aab1 JA |
212 | #if defined(__builtin_bswap16) |
213 | #define fio_swap16(x) __builtin_bswap16(x) | |
214 | #else | |
ff245192 | 215 | #define fio_swap16(x) __bswap_16(x) |
df73aab1 JA |
216 | #endif |
217 | #if defined(__builtin_bswap32) | |
218 | #define fio_swap32(x) __builtin_bswap32(x) | |
219 | #else | |
ff245192 | 220 | #define fio_swap32(x) __bswap_32(x) |
df73aab1 JA |
221 | #endif |
222 | #if defined(__builtin_bswap64) | |
223 | #define fio_swap64(x) __builtin_bswap64(x) | |
224 | #else | |
ff245192 | 225 | #define fio_swap64(x) __bswap_64(x) |
df73aab1 | 226 | #endif |
ff245192 | 227 | |
eb7ccf38 JA |
228 | #define CACHE_LINE_FILE \ |
229 | "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size" | |
230 | ||
231 | static inline int arch_cache_line_size(void) | |
232 | { | |
233 | char size[32]; | |
234 | int fd, ret; | |
235 | ||
236 | fd = open(CACHE_LINE_FILE, O_RDONLY); | |
237 | if (fd < 0) | |
238 | return -1; | |
239 | ||
240 | ret = read(fd, size, sizeof(size)); | |
ec76f15a JA |
241 | |
242 | close(fd); | |
243 | ||
eb7ccf38 JA |
244 | if (ret <= 0) |
245 | return -1; | |
ec76f15a JA |
246 | else |
247 | return atoi(size); | |
eb7ccf38 JA |
248 | } |
249 | ||
c08ad04c | 250 | static inline unsigned long long get_fs_free_size(const char *path) |
2e3bd4c2 JA |
251 | { |
252 | unsigned long long ret; | |
253 | struct statfs s; | |
254 | ||
255 | if (statfs(path, &s) < 0) | |
256 | return -1ULL; | |
257 | ||
258 | ret = s.f_bsize; | |
259 | ret *= (unsigned long long) s.f_bfree; | |
260 | return ret; | |
261 | } | |
262 | ||
a5f3027c JA |
263 | static inline int os_trim(int fd, unsigned long long start, |
264 | unsigned long long len) | |
265 | { | |
266 | uint64_t range[2]; | |
267 | ||
268 | range[0] = start; | |
269 | range[1] = len; | |
270 | ||
271 | if (!ioctl(fd, BLKDISCARD, range)) | |
272 | return 0; | |
273 | ||
274 | return errno; | |
275 | } | |
276 | ||
7e09a9f1 | 277 | #ifdef CONFIG_SCHED_IDLE |
f2a2ce0e HL |
278 | static inline int fio_set_sched_idle(void) |
279 | { | |
280 | struct sched_param p = { .sched_priority = 0, }; | |
281 | return sched_setscheduler(gettid(), SCHED_IDLE, &p); | |
282 | } | |
7e09a9f1 | 283 | #endif |
f2a2ce0e | 284 | |
37659335 JA |
285 | #ifndef POSIX_FADV_STREAMID |
286 | #define POSIX_FADV_STREAMID 8 | |
287 | #endif | |
288 | ||
289 | #define FIO_HAVE_STREAMID | |
290 | ||
ebac4655 | 291 | #endif |