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