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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> | |
610a730c | 18 | #include <endian.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)) | |
d2ce18b5 JA |
65 | |
66 | static inline int fio_cpuset_init(os_cpu_mask_t *mask) | |
67 | { | |
68 | CPU_ZERO(mask); | |
69 | return 0; | |
70 | } | |
71 | ||
72 | static inline int fio_cpuset_exit(os_cpu_mask_t *mask) | |
73 | { | |
74 | return 0; | |
75 | } | |
6d459ee7 JA |
76 | |
77 | #define FIO_MAX_CPUS CPU_SETSIZE | |
4d8947de | 78 | |
ebac4655 JA |
79 | static inline int ioprio_set(int which, int who, int ioprio) |
80 | { | |
81 | return syscall(__NR_ioprio_set, which, who, ioprio); | |
82 | } | |
83 | ||
47f767c1 JA |
84 | static inline int gettid(void) |
85 | { | |
86 | return syscall(__NR_gettid); | |
87 | } | |
88 | ||
3feedc60 JA |
89 | #define SPLICE_DEF_SIZE (64*1024) |
90 | ||
6cefbe33 JA |
91 | enum { |
92 | IOPRIO_CLASS_NONE, | |
93 | IOPRIO_CLASS_RT, | |
94 | IOPRIO_CLASS_BE, | |
95 | IOPRIO_CLASS_IDLE, | |
96 | }; | |
97 | ||
ebac4655 JA |
98 | enum { |
99 | IOPRIO_WHO_PROCESS = 1, | |
100 | IOPRIO_WHO_PGRP, | |
101 | IOPRIO_WHO_USER, | |
102 | }; | |
103 | ||
6cefbe33 | 104 | #define IOPRIO_BITS 16 |
ebac4655 JA |
105 | #define IOPRIO_CLASS_SHIFT 13 |
106 | ||
107 | #ifndef BLKGETSIZE64 | |
108 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) | |
109 | #endif | |
110 | ||
e5b401d4 JA |
111 | #ifndef BLKFLSBUF |
112 | #define BLKFLSBUF _IO(0x12,97) | |
113 | #endif | |
114 | ||
a5f3027c JA |
115 | #ifndef BLKDISCARD |
116 | #define BLKDISCARD _IO(0x12,119) | |
117 | #endif | |
118 | ||
e2e58886 | 119 | static inline int blockdev_invalidate_cache(struct fio_file *f) |
e5b401d4 | 120 | { |
ecc314ba | 121 | return ioctl(f->fd, BLKFLSBUF); |
e5b401d4 JA |
122 | } |
123 | ||
ecc314ba | 124 | static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes) |
ebac4655 | 125 | { |
ecc314ba | 126 | if (!ioctl(f->fd, BLKGETSIZE64, bytes)) |
ebac4655 JA |
127 | return 0; |
128 | ||
129 | return errno; | |
130 | } | |
131 | ||
32cd46a0 JA |
132 | static inline unsigned long long os_phys_mem(void) |
133 | { | |
134 | long pagesize, pages; | |
135 | ||
136 | pagesize = sysconf(_SC_PAGESIZE); | |
137 | pages = sysconf(_SC_PHYS_PAGES); | |
138 | if (pages == -1 || pagesize == -1) | |
139 | return 0; | |
140 | ||
141 | return (unsigned long long) pages * (unsigned long long) pagesize; | |
142 | } | |
143 | ||
6dfd46b9 JA |
144 | static inline void os_random_seed(unsigned long seed, os_random_state_t *rs) |
145 | { | |
146 | srand48_r(seed, rs); | |
147 | } | |
148 | ||
149 | static inline long os_random_long(os_random_state_t *rs) | |
150 | { | |
151 | long val; | |
152 | ||
153 | lrand48_r(rs, &val); | |
154 | return val; | |
155 | } | |
156 | ||
8cc7afa9 | 157 | static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev) |
07e5b264 JA |
158 | { |
159 | struct raw_config_request rq; | |
160 | int fd; | |
161 | ||
162 | if (major(dev) != RAW_MAJOR) | |
8cc7afa9 | 163 | return 1; |
07e5b264 JA |
164 | |
165 | /* | |
166 | * we should be able to find /dev/rawctl or /dev/raw/rawctl | |
167 | */ | |
168 | fd = open("/dev/rawctl", O_RDONLY); | |
169 | if (fd < 0) { | |
170 | fd = open("/dev/raw/rawctl", O_RDONLY); | |
171 | if (fd < 0) | |
8cc7afa9 | 172 | return 1; |
07e5b264 JA |
173 | } |
174 | ||
175 | rq.raw_minor = minor(dev); | |
176 | if (ioctl(fd, RAW_GETBIND, &rq) < 0) { | |
177 | close(fd); | |
8cc7afa9 | 178 | return 1; |
07e5b264 JA |
179 | } |
180 | ||
181 | close(fd); | |
182 | *majdev = rq.block_major; | |
183 | *mindev = rq.block_minor; | |
8cc7afa9 | 184 | return 0; |
07e5b264 JA |
185 | } |
186 | ||
5b6f5c66 | 187 | #ifdef O_NOATIME |
5921e80c | 188 | #define FIO_O_NOATIME O_NOATIME |
5b6f5c66 JA |
189 | #else |
190 | #define FIO_O_NOATIME 0 | |
191 | #endif | |
5921e80c | 192 | |
a1c58075 JA |
193 | #ifdef MADV_REMOVE |
194 | #define FIO_MADV_FREE MADV_REMOVE | |
195 | #endif | |
196 | ||
610a730c JA |
197 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
198 | #define FIO_LITTLE_ENDIAN | |
199 | #elif __BYTE_ORDER == __BIG_ENDIAN | |
200 | #define FIO_BIG_ENDIAN | |
201 | #else | |
202 | #error "Unknown endianness" | |
203 | #endif | |
204 | ||
ff245192 JA |
205 | #define fio_swap16(x) __bswap_16(x) |
206 | #define fio_swap32(x) __bswap_32(x) | |
207 | #define fio_swap64(x) __bswap_64(x) | |
208 | ||
eb7ccf38 JA |
209 | #define CACHE_LINE_FILE \ |
210 | "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size" | |
211 | ||
212 | static inline int arch_cache_line_size(void) | |
213 | { | |
214 | char size[32]; | |
215 | int fd, ret; | |
216 | ||
217 | fd = open(CACHE_LINE_FILE, O_RDONLY); | |
218 | if (fd < 0) | |
219 | return -1; | |
220 | ||
221 | ret = read(fd, size, sizeof(size)); | |
ec76f15a JA |
222 | |
223 | close(fd); | |
224 | ||
eb7ccf38 JA |
225 | if (ret <= 0) |
226 | return -1; | |
ec76f15a JA |
227 | else |
228 | return atoi(size); | |
eb7ccf38 JA |
229 | } |
230 | ||
2e3bd4c2 JA |
231 | static inline unsigned long long get_fs_size(const char *path) |
232 | { | |
233 | unsigned long long ret; | |
234 | struct statfs s; | |
235 | ||
236 | if (statfs(path, &s) < 0) | |
237 | return -1ULL; | |
238 | ||
239 | ret = s.f_bsize; | |
240 | ret *= (unsigned long long) s.f_bfree; | |
241 | return ret; | |
242 | } | |
243 | ||
a5f3027c JA |
244 | static inline int os_trim(int fd, unsigned long long start, |
245 | unsigned long long len) | |
246 | { | |
247 | uint64_t range[2]; | |
248 | ||
249 | range[0] = start; | |
250 | range[1] = len; | |
251 | ||
252 | if (!ioctl(fd, BLKDISCARD, range)) | |
253 | return 0; | |
254 | ||
255 | return errno; | |
256 | } | |
257 | ||
ebac4655 | 258 | #endif |