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