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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 | 12 | |
f3de88a7 JA |
13 | #include "indirect.h" |
14 | ||
ebac4655 JA |
15 | #define FIO_HAVE_LIBAIO |
16 | #define FIO_HAVE_POSIXAIO | |
17 | #define FIO_HAVE_FADVISE | |
18 | #define FIO_HAVE_CPU_AFFINITY | |
19 | #define FIO_HAVE_DISK_UTIL | |
20 | #define FIO_HAVE_SGIO | |
ba4f8923 | 21 | #define FIO_HAVE_IOPRIO |
8756e4d4 | 22 | #define FIO_HAVE_SPLICE |
22f78b32 | 23 | #define FIO_HAVE_IOSCHED_SWITCH |
2c0ecd28 | 24 | #define FIO_HAVE_ODIRECT |
74b025b0 | 25 | #define FIO_HAVE_HUGETLB |
07e5b264 | 26 | #define FIO_HAVE_RAWBIND |
5e62c22a | 27 | #define FIO_HAVE_BLKTRACE |
5921e80c | 28 | #define FIO_HAVE_STRSEP |
fffca02d | 29 | #define FIO_HAVE_FALLOCATE |
207cb0f0 | 30 | #define FIO_HAVE_POSIXAIO_FSYNC |
b6959b55 | 31 | |
dc873b6f | 32 | #define OS_MAP_ANON MAP_ANONYMOUS |
ebac4655 | 33 | |
4d8947de SL |
34 | #ifndef CLOCK_MONOTONIC |
35 | #define CLOCK_MONOTONIC 1 | |
36 | #endif | |
37 | ||
38 | #ifdef FIO_HAVE_CPU_AFFINITY | |
ebac4655 | 39 | typedef cpu_set_t os_cpu_mask_t; |
4d8947de SL |
40 | #else |
41 | typedef int os_cpu_mask_t; | |
42 | #endif | |
6dfd46b9 | 43 | typedef struct drand48_data os_random_state_t; |
ebac4655 JA |
44 | |
45 | /* | |
46 | * we want fadvise64 really, but it's so tangled... later | |
47 | */ | |
4d8947de | 48 | #ifdef FIO_HAVE_FADVISE |
ebac4655 JA |
49 | #define fadvise(fd, off, len, advice) \ |
50 | posix_fadvise((fd), (off_t)(off), (len), (advice)) | |
4d8947de | 51 | #endif |
ebac4655 | 52 | |
c8f025f8 JA |
53 | /* |
54 | * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want | |
55 | * the affinity helpers to work. | |
56 | */ | |
4d8947de | 57 | #ifdef FIO_HAVE_CPU_AFFINITY |
c8f025f8 | 58 | #ifndef GLIBC_2_3_2 |
ebac4655 | 59 | #define fio_setaffinity(td) \ |
2dc1bbeb | 60 | sched_setaffinity((td)->pid, sizeof((td)->o.cpumask), &(td)->o.cpumask) |
ebac4655 JA |
61 | #define fio_getaffinity(pid, ptr) \ |
62 | sched_getaffinity((pid), sizeof(cpu_set_t), (ptr)) | |
c8f025f8 JA |
63 | #else |
64 | #define fio_setaffinity(td) \ | |
65 | sched_setaffinity((td)->pid, &(td)->o.cpumask) | |
66 | #define fio_getaffinity(pid, ptr) \ | |
67 | sched_getaffinity((pid), (ptr)) | |
68 | #endif | |
4d8947de SL |
69 | #endif |
70 | ||
ebac4655 JA |
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 | |
3feedc60 JA |
106 | #define SPLICE_DEF_SIZE (64*1024) |
107 | ||
b6959b55 | 108 | #ifdef FIO_HAVE_SYSLET |
bf0dc8fa IM |
109 | |
110 | struct syslet_uatom; | |
111 | struct async_head_user; | |
112 | ||
a4f4fdd7 JA |
113 | /* |
114 | * syslet stuff | |
115 | */ | |
bf0dc8fa IM |
116 | static inline struct syslet_uatom * |
117 | async_exec(struct syslet_uatom *atom, struct async_head_user *ahu) | |
a4f4fdd7 | 118 | { |
1df341ff | 119 | return (void *) syscall(__NR_async_exec, atom, ahu); |
a4f4fdd7 JA |
120 | } |
121 | ||
bf0dc8fa IM |
122 | static inline long |
123 | async_wait(unsigned long min_wait_events, unsigned long user_ring_idx, | |
124 | struct async_head_user *ahu) | |
a4f4fdd7 | 125 | { |
bf0dc8fa IM |
126 | return syscall(__NR_async_wait, min_wait_events, |
127 | user_ring_idx, ahu); | |
a4f4fdd7 JA |
128 | } |
129 | ||
7756b0d0 | 130 | static inline long async_thread(void *event, struct async_head_user *ahu) |
a4f4fdd7 | 131 | { |
7756b0d0 | 132 | return syscall(__NR_async_thread, event, ahu); |
a4f4fdd7 JA |
133 | } |
134 | ||
135 | static inline long umem_add(unsigned long *uptr, unsigned long inc) | |
136 | { | |
137 | return syscall(__NR_umem_add, uptr, inc); | |
138 | } | |
b6959b55 | 139 | #endif /* FIO_HAVE_SYSLET */ |
a4f4fdd7 | 140 | |
6cefbe33 JA |
141 | enum { |
142 | IOPRIO_CLASS_NONE, | |
143 | IOPRIO_CLASS_RT, | |
144 | IOPRIO_CLASS_BE, | |
145 | IOPRIO_CLASS_IDLE, | |
146 | }; | |
147 | ||
ebac4655 JA |
148 | enum { |
149 | IOPRIO_WHO_PROCESS = 1, | |
150 | IOPRIO_WHO_PGRP, | |
151 | IOPRIO_WHO_USER, | |
152 | }; | |
153 | ||
6cefbe33 | 154 | #define IOPRIO_BITS 16 |
ebac4655 JA |
155 | #define IOPRIO_CLASS_SHIFT 13 |
156 | ||
157 | #ifndef BLKGETSIZE64 | |
158 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) | |
159 | #endif | |
160 | ||
e5b401d4 JA |
161 | #ifndef BLKFLSBUF |
162 | #define BLKFLSBUF _IO(0x12,97) | |
163 | #endif | |
164 | ||
165 | static inline int blockdev_invalidate_cache(int fd) | |
166 | { | |
a16211bb | 167 | return ioctl(fd, BLKFLSBUF); |
e5b401d4 JA |
168 | } |
169 | ||
9104f874 | 170 | static inline int blockdev_size(int fd, unsigned long long *bytes) |
ebac4655 JA |
171 | { |
172 | if (!ioctl(fd, BLKGETSIZE64, bytes)) | |
173 | return 0; | |
174 | ||
175 | return errno; | |
176 | } | |
177 | ||
32cd46a0 JA |
178 | static inline unsigned long long os_phys_mem(void) |
179 | { | |
180 | long pagesize, pages; | |
181 | ||
182 | pagesize = sysconf(_SC_PAGESIZE); | |
183 | pages = sysconf(_SC_PHYS_PAGES); | |
184 | if (pages == -1 || pagesize == -1) | |
185 | return 0; | |
186 | ||
187 | return (unsigned long long) pages * (unsigned long long) pagesize; | |
188 | } | |
189 | ||
6dfd46b9 JA |
190 | static inline void os_random_seed(unsigned long seed, os_random_state_t *rs) |
191 | { | |
192 | srand48_r(seed, rs); | |
193 | } | |
194 | ||
195 | static inline long os_random_long(os_random_state_t *rs) | |
196 | { | |
197 | long val; | |
198 | ||
199 | lrand48_r(rs, &val); | |
200 | return val; | |
201 | } | |
202 | ||
8cc7afa9 | 203 | static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev) |
07e5b264 JA |
204 | { |
205 | struct raw_config_request rq; | |
206 | int fd; | |
207 | ||
208 | if (major(dev) != RAW_MAJOR) | |
8cc7afa9 | 209 | return 1; |
07e5b264 JA |
210 | |
211 | /* | |
212 | * we should be able to find /dev/rawctl or /dev/raw/rawctl | |
213 | */ | |
214 | fd = open("/dev/rawctl", O_RDONLY); | |
215 | if (fd < 0) { | |
216 | fd = open("/dev/raw/rawctl", O_RDONLY); | |
217 | if (fd < 0) | |
8cc7afa9 | 218 | return 1; |
07e5b264 JA |
219 | } |
220 | ||
221 | rq.raw_minor = minor(dev); | |
222 | if (ioctl(fd, RAW_GETBIND, &rq) < 0) { | |
223 | close(fd); | |
8cc7afa9 | 224 | return 1; |
07e5b264 JA |
225 | } |
226 | ||
227 | close(fd); | |
228 | *majdev = rq.block_major; | |
229 | *mindev = rq.block_minor; | |
8cc7afa9 | 230 | return 0; |
07e5b264 JA |
231 | } |
232 | ||
5921e80c JA |
233 | #define FIO_O_NOATIME O_NOATIME |
234 | ||
ebac4655 | 235 | #endif |