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