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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 | */ | |
57 | #ifndef GLIBC_2_3_2 | |
ebac4655 | 58 | #define fio_setaffinity(td) \ |
2dc1bbeb | 59 | sched_setaffinity((td)->pid, sizeof((td)->o.cpumask), &(td)->o.cpumask) |
ebac4655 JA |
60 | #define fio_getaffinity(pid, ptr) \ |
61 | sched_getaffinity((pid), sizeof(cpu_set_t), (ptr)) | |
c8f025f8 JA |
62 | #else |
63 | #define fio_setaffinity(td) \ | |
64 | sched_setaffinity((td)->pid, &(td)->o.cpumask) | |
65 | #define fio_getaffinity(pid, ptr) \ | |
66 | sched_getaffinity((pid), (ptr)) | |
67 | #endif | |
be4ecfdf JA |
68 | |
69 | #define fio_cpu_clear(mask, cpu) CPU_CLR((cpu), (mask)) | |
6d459ee7 JA |
70 | #define fio_cpu_set(mask, cpu) CPU_SET((cpu), (mask)) |
71 | #define fio_cpuset_init(td) CPU_ZERO(&(td)->o.cpumask) | |
72 | ||
73 | #define FIO_MAX_CPUS CPU_SETSIZE | |
4d8947de | 74 | |
ebac4655 JA |
75 | static inline int ioprio_set(int which, int who, int ioprio) |
76 | { | |
77 | return syscall(__NR_ioprio_set, which, who, ioprio); | |
78 | } | |
79 | ||
97fbdfa1 JA |
80 | /* |
81 | * Just check for SPLICE_F_MOVE, if that isn't there, assume the others | |
82 | * aren't either. | |
83 | */ | |
84 | #ifndef SPLICE_F_MOVE | |
85 | #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */ | |
86 | #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */ | |
87 | /* we may still block on the fd we splice */ | |
88 | /* from/to, of course */ | |
89 | #define SPLICE_F_MORE (0x04) /* expect more data */ | |
90 | #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */ | |
8756e4d4 JA |
91 | |
92 | static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out, | |
495ee9b6 | 93 | size_t len, unsigned int flags) |
8756e4d4 | 94 | { |
97fbdfa1 | 95 | return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags); |
8756e4d4 JA |
96 | } |
97 | ||
98 | static inline int tee(int fdin, int fdout, size_t len, unsigned int flags) | |
99 | { | |
97fbdfa1 | 100 | return syscall(__NR_sys_tee, fdin, fdout, len, flags); |
8756e4d4 JA |
101 | } |
102 | ||
103 | static inline int vmsplice(int fd, const struct iovec *iov, | |
104 | unsigned long nr_segs, unsigned int flags) | |
105 | { | |
97fbdfa1 | 106 | return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags); |
8756e4d4 | 107 | } |
97fbdfa1 | 108 | #endif |
8756e4d4 | 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 | { |
2b52511f | 123 | return (struct syslet_uatom *) 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 | ||
8cc7afa9 | 207 | static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev) |
07e5b264 JA |
208 | { |
209 | struct raw_config_request rq; | |
210 | int fd; | |
211 | ||
212 | if (major(dev) != RAW_MAJOR) | |
8cc7afa9 | 213 | return 1; |
07e5b264 JA |
214 | |
215 | /* | |
216 | * we should be able to find /dev/rawctl or /dev/raw/rawctl | |
217 | */ | |
218 | fd = open("/dev/rawctl", O_RDONLY); | |
219 | if (fd < 0) { | |
220 | fd = open("/dev/raw/rawctl", O_RDONLY); | |
221 | if (fd < 0) | |
8cc7afa9 | 222 | return 1; |
07e5b264 JA |
223 | } |
224 | ||
225 | rq.raw_minor = minor(dev); | |
226 | if (ioctl(fd, RAW_GETBIND, &rq) < 0) { | |
227 | close(fd); | |
8cc7afa9 | 228 | return 1; |
07e5b264 JA |
229 | } |
230 | ||
231 | close(fd); | |
232 | *majdev = rq.block_major; | |
233 | *mindev = rq.block_minor; | |
8cc7afa9 | 234 | return 0; |
07e5b264 JA |
235 | } |
236 | ||
5b6f5c66 | 237 | #ifdef O_NOATIME |
5921e80c | 238 | #define FIO_O_NOATIME O_NOATIME |
5b6f5c66 JA |
239 | #else |
240 | #define FIO_O_NOATIME 0 | |
241 | #endif | |
5921e80c | 242 | |
ebac4655 | 243 | #endif |