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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 JA |
6 | #include <sys/syscall.h> |
7 | #include <unistd.h> | |
97fbdfa1 | 8 | #include <fcntl.h> |
ea421790 | 9 | #include <linux/unistd.h> |
07e5b264 JA |
10 | #include <linux/raw.h> |
11 | #include <linux/major.h> | |
ebac4655 JA |
12 | |
13 | #define FIO_HAVE_LIBAIO | |
14 | #define FIO_HAVE_POSIXAIO | |
15 | #define FIO_HAVE_FADVISE | |
16 | #define FIO_HAVE_CPU_AFFINITY | |
17 | #define FIO_HAVE_DISK_UTIL | |
18 | #define FIO_HAVE_SGIO | |
ba4f8923 | 19 | #define FIO_HAVE_IOPRIO |
8756e4d4 | 20 | #define FIO_HAVE_SPLICE |
22f78b32 | 21 | #define FIO_HAVE_IOSCHED_SWITCH |
2c0ecd28 | 22 | #define FIO_HAVE_ODIRECT |
74b025b0 | 23 | #define FIO_HAVE_HUGETLB |
07e5b264 | 24 | #define FIO_HAVE_RAWBIND |
5e62c22a | 25 | #define FIO_HAVE_BLKTRACE |
4d8947de | 26 | #define FIO_HAVE_SETPSHARED |
b6959b55 | 27 | |
ebac4655 JA |
28 | #define OS_MAP_ANON (MAP_ANONYMOUS) |
29 | ||
4d8947de SL |
30 | #ifndef CLOCK_MONOTONIC |
31 | #define CLOCK_MONOTONIC 1 | |
32 | #endif | |
33 | ||
34 | #ifdef FIO_HAVE_CPU_AFFINITY | |
ebac4655 | 35 | typedef cpu_set_t os_cpu_mask_t; |
4d8947de SL |
36 | #else |
37 | typedef int os_cpu_mask_t; | |
38 | #endif | |
6dfd46b9 | 39 | typedef struct drand48_data os_random_state_t; |
ebac4655 JA |
40 | |
41 | /* | |
42 | * we want fadvise64 really, but it's so tangled... later | |
43 | */ | |
4d8947de | 44 | #ifdef FIO_HAVE_FADVISE |
ebac4655 JA |
45 | #define fadvise(fd, off, len, advice) \ |
46 | posix_fadvise((fd), (off_t)(off), (len), (advice)) | |
4d8947de | 47 | #endif |
ebac4655 | 48 | |
c8f025f8 JA |
49 | /* |
50 | * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want | |
51 | * the affinity helpers to work. | |
52 | */ | |
4d8947de | 53 | #ifdef FIO_HAVE_CPU_AFFINITY |
c8f025f8 | 54 | #ifndef GLIBC_2_3_2 |
ebac4655 | 55 | #define fio_setaffinity(td) \ |
2dc1bbeb | 56 | sched_setaffinity((td)->pid, sizeof((td)->o.cpumask), &(td)->o.cpumask) |
ebac4655 JA |
57 | #define fio_getaffinity(pid, ptr) \ |
58 | sched_getaffinity((pid), sizeof(cpu_set_t), (ptr)) | |
c8f025f8 JA |
59 | #else |
60 | #define fio_setaffinity(td) \ | |
61 | sched_setaffinity((td)->pid, &(td)->o.cpumask) | |
62 | #define fio_getaffinity(pid, ptr) \ | |
63 | sched_getaffinity((pid), (ptr)) | |
64 | #endif | |
4d8947de SL |
65 | #endif |
66 | ||
67 | #ifndef FIO_HAVE_SETPSHARED | |
68 | #define pthread_mutexattr_setpshared(attr, pshared) (0) | |
69 | #endif | |
ebac4655 JA |
70 | |
71 | static inline int ioprio_set(int which, int who, int ioprio) | |
72 | { | |
73 | return syscall(__NR_ioprio_set, which, who, ioprio); | |
74 | } | |
75 | ||
97fbdfa1 JA |
76 | /* |
77 | * Just check for SPLICE_F_MOVE, if that isn't there, assume the others | |
78 | * aren't either. | |
79 | */ | |
80 | #ifndef SPLICE_F_MOVE | |
81 | #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */ | |
82 | #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */ | |
83 | /* we may still block on the fd we splice */ | |
84 | /* from/to, of course */ | |
85 | #define SPLICE_F_MORE (0x04) /* expect more data */ | |
86 | #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */ | |
8756e4d4 JA |
87 | |
88 | static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out, | |
495ee9b6 | 89 | size_t len, unsigned int flags) |
8756e4d4 | 90 | { |
97fbdfa1 | 91 | return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags); |
8756e4d4 JA |
92 | } |
93 | ||
94 | static inline int tee(int fdin, int fdout, size_t len, unsigned int flags) | |
95 | { | |
97fbdfa1 | 96 | return syscall(__NR_sys_tee, fdin, fdout, len, flags); |
8756e4d4 JA |
97 | } |
98 | ||
99 | static inline int vmsplice(int fd, const struct iovec *iov, | |
100 | unsigned long nr_segs, unsigned int flags) | |
101 | { | |
97fbdfa1 | 102 | return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags); |
8756e4d4 | 103 | } |
97fbdfa1 | 104 | #endif |
8756e4d4 | 105 | |
f24254e1 JA |
106 | #ifdef SPLICE_F_UNMAP |
107 | #define SPLICE_F_UNMAP (0x10) | |
108 | #endif | |
109 | ||
3feedc60 JA |
110 | #define SPLICE_DEF_SIZE (64*1024) |
111 | ||
b6959b55 | 112 | #ifdef FIO_HAVE_SYSLET |
bf0dc8fa IM |
113 | |
114 | struct syslet_uatom; | |
115 | struct async_head_user; | |
116 | ||
a4f4fdd7 JA |
117 | /* |
118 | * syslet stuff | |
119 | */ | |
bf0dc8fa IM |
120 | static inline struct syslet_uatom * |
121 | async_exec(struct syslet_uatom *atom, struct async_head_user *ahu) | |
a4f4fdd7 | 122 | { |
1df341ff | 123 | return (void *) syscall(__NR_async_exec, atom, ahu); |
a4f4fdd7 JA |
124 | } |
125 | ||
bf0dc8fa IM |
126 | static inline long |
127 | async_wait(unsigned long min_wait_events, unsigned long user_ring_idx, | |
128 | struct async_head_user *ahu) | |
a4f4fdd7 | 129 | { |
bf0dc8fa IM |
130 | return syscall(__NR_async_wait, min_wait_events, |
131 | user_ring_idx, ahu); | |
a4f4fdd7 JA |
132 | } |
133 | ||
7756b0d0 | 134 | static inline long async_thread(void *event, struct async_head_user *ahu) |
a4f4fdd7 | 135 | { |
7756b0d0 | 136 | return syscall(__NR_async_thread, event, ahu); |
a4f4fdd7 JA |
137 | } |
138 | ||
139 | static inline long umem_add(unsigned long *uptr, unsigned long inc) | |
140 | { | |
141 | return syscall(__NR_umem_add, uptr, inc); | |
142 | } | |
b6959b55 | 143 | #endif /* FIO_HAVE_SYSLET */ |
a4f4fdd7 | 144 | |
6cefbe33 JA |
145 | enum { |
146 | IOPRIO_CLASS_NONE, | |
147 | IOPRIO_CLASS_RT, | |
148 | IOPRIO_CLASS_BE, | |
149 | IOPRIO_CLASS_IDLE, | |
150 | }; | |
151 | ||
ebac4655 JA |
152 | enum { |
153 | IOPRIO_WHO_PROCESS = 1, | |
154 | IOPRIO_WHO_PGRP, | |
155 | IOPRIO_WHO_USER, | |
156 | }; | |
157 | ||
6cefbe33 | 158 | #define IOPRIO_BITS 16 |
ebac4655 JA |
159 | #define IOPRIO_CLASS_SHIFT 13 |
160 | ||
161 | #ifndef BLKGETSIZE64 | |
162 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) | |
163 | #endif | |
164 | ||
e5b401d4 JA |
165 | #ifndef BLKFLSBUF |
166 | #define BLKFLSBUF _IO(0x12,97) | |
167 | #endif | |
168 | ||
169 | static inline int blockdev_invalidate_cache(int fd) | |
170 | { | |
a16211bb | 171 | return ioctl(fd, BLKFLSBUF); |
e5b401d4 JA |
172 | } |
173 | ||
9104f874 | 174 | static inline int blockdev_size(int fd, unsigned long long *bytes) |
ebac4655 JA |
175 | { |
176 | if (!ioctl(fd, BLKGETSIZE64, bytes)) | |
177 | return 0; | |
178 | ||
179 | return errno; | |
180 | } | |
181 | ||
32cd46a0 JA |
182 | static inline unsigned long long os_phys_mem(void) |
183 | { | |
184 | long pagesize, pages; | |
185 | ||
186 | pagesize = sysconf(_SC_PAGESIZE); | |
187 | pages = sysconf(_SC_PHYS_PAGES); | |
188 | if (pages == -1 || pagesize == -1) | |
189 | return 0; | |
190 | ||
191 | return (unsigned long long) pages * (unsigned long long) pagesize; | |
192 | } | |
193 | ||
6dfd46b9 JA |
194 | static inline void os_random_seed(unsigned long seed, os_random_state_t *rs) |
195 | { | |
196 | srand48_r(seed, rs); | |
197 | } | |
198 | ||
199 | static inline long os_random_long(os_random_state_t *rs) | |
200 | { | |
201 | long val; | |
202 | ||
203 | lrand48_r(rs, &val); | |
204 | return val; | |
205 | } | |
206 | ||
207 | static inline double os_random_double(os_random_state_t *rs) | |
208 | { | |
209 | double val; | |
210 | ||
211 | drand48_r(rs, &val); | |
212 | return val; | |
213 | } | |
214 | ||
8cc7afa9 | 215 | static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev) |
07e5b264 JA |
216 | { |
217 | struct raw_config_request rq; | |
218 | int fd; | |
219 | ||
220 | if (major(dev) != RAW_MAJOR) | |
8cc7afa9 | 221 | return 1; |
07e5b264 JA |
222 | |
223 | /* | |
224 | * we should be able to find /dev/rawctl or /dev/raw/rawctl | |
225 | */ | |
226 | fd = open("/dev/rawctl", O_RDONLY); | |
227 | if (fd < 0) { | |
228 | fd = open("/dev/raw/rawctl", O_RDONLY); | |
229 | if (fd < 0) | |
8cc7afa9 | 230 | return 1; |
07e5b264 JA |
231 | } |
232 | ||
233 | rq.raw_minor = minor(dev); | |
234 | if (ioctl(fd, RAW_GETBIND, &rq) < 0) { | |
235 | close(fd); | |
8cc7afa9 | 236 | return 1; |
07e5b264 JA |
237 | } |
238 | ||
239 | close(fd); | |
240 | *majdev = rq.block_major; | |
241 | *mindev = rq.block_minor; | |
8cc7afa9 | 242 | return 0; |
07e5b264 JA |
243 | } |
244 | ||
ebac4655 | 245 | #endif |