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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 |
b6959b55 | 29 | |
ebac4655 JA |
30 | #define OS_MAP_ANON (MAP_ANONYMOUS) |
31 | ||
4d8947de SL |
32 | #ifndef CLOCK_MONOTONIC |
33 | #define CLOCK_MONOTONIC 1 | |
34 | #endif | |
35 | ||
36 | #ifdef FIO_HAVE_CPU_AFFINITY | |
ebac4655 | 37 | typedef cpu_set_t os_cpu_mask_t; |
4d8947de SL |
38 | #else |
39 | typedef int os_cpu_mask_t; | |
40 | #endif | |
6dfd46b9 | 41 | typedef struct drand48_data os_random_state_t; |
ebac4655 JA |
42 | |
43 | /* | |
44 | * we want fadvise64 really, but it's so tangled... later | |
45 | */ | |
4d8947de | 46 | #ifdef FIO_HAVE_FADVISE |
ebac4655 JA |
47 | #define fadvise(fd, off, len, advice) \ |
48 | posix_fadvise((fd), (off_t)(off), (len), (advice)) | |
4d8947de | 49 | #endif |
ebac4655 | 50 | |
c8f025f8 JA |
51 | /* |
52 | * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want | |
53 | * the affinity helpers to work. | |
54 | */ | |
4d8947de | 55 | #ifdef FIO_HAVE_CPU_AFFINITY |
c8f025f8 | 56 | #ifndef GLIBC_2_3_2 |
ebac4655 | 57 | #define fio_setaffinity(td) \ |
2dc1bbeb | 58 | sched_setaffinity((td)->pid, sizeof((td)->o.cpumask), &(td)->o.cpumask) |
ebac4655 JA |
59 | #define fio_getaffinity(pid, ptr) \ |
60 | sched_getaffinity((pid), sizeof(cpu_set_t), (ptr)) | |
c8f025f8 JA |
61 | #else |
62 | #define fio_setaffinity(td) \ | |
63 | sched_setaffinity((td)->pid, &(td)->o.cpumask) | |
64 | #define fio_getaffinity(pid, ptr) \ | |
65 | sched_getaffinity((pid), (ptr)) | |
66 | #endif | |
4d8947de SL |
67 | #endif |
68 | ||
ebac4655 JA |
69 | static inline int ioprio_set(int which, int who, int ioprio) |
70 | { | |
71 | return syscall(__NR_ioprio_set, which, who, ioprio); | |
72 | } | |
73 | ||
97fbdfa1 JA |
74 | /* |
75 | * Just check for SPLICE_F_MOVE, if that isn't there, assume the others | |
76 | * aren't either. | |
77 | */ | |
78 | #ifndef SPLICE_F_MOVE | |
79 | #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */ | |
80 | #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */ | |
81 | /* we may still block on the fd we splice */ | |
82 | /* from/to, of course */ | |
83 | #define SPLICE_F_MORE (0x04) /* expect more data */ | |
84 | #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */ | |
8756e4d4 JA |
85 | |
86 | static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out, | |
495ee9b6 | 87 | size_t len, unsigned int flags) |
8756e4d4 | 88 | { |
97fbdfa1 | 89 | return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags); |
8756e4d4 JA |
90 | } |
91 | ||
92 | static inline int tee(int fdin, int fdout, size_t len, unsigned int flags) | |
93 | { | |
97fbdfa1 | 94 | return syscall(__NR_sys_tee, fdin, fdout, len, flags); |
8756e4d4 JA |
95 | } |
96 | ||
97 | static inline int vmsplice(int fd, const struct iovec *iov, | |
98 | unsigned long nr_segs, unsigned int flags) | |
99 | { | |
97fbdfa1 | 100 | return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags); |
8756e4d4 | 101 | } |
97fbdfa1 | 102 | #endif |
8756e4d4 | 103 | |
3feedc60 JA |
104 | #define SPLICE_DEF_SIZE (64*1024) |
105 | ||
b6959b55 | 106 | #ifdef FIO_HAVE_SYSLET |
bf0dc8fa IM |
107 | |
108 | struct syslet_uatom; | |
109 | struct async_head_user; | |
110 | ||
a4f4fdd7 JA |
111 | /* |
112 | * syslet stuff | |
113 | */ | |
bf0dc8fa IM |
114 | static inline struct syslet_uatom * |
115 | async_exec(struct syslet_uatom *atom, struct async_head_user *ahu) | |
a4f4fdd7 | 116 | { |
1df341ff | 117 | return (void *) syscall(__NR_async_exec, atom, ahu); |
a4f4fdd7 JA |
118 | } |
119 | ||
bf0dc8fa IM |
120 | static inline long |
121 | async_wait(unsigned long min_wait_events, unsigned long user_ring_idx, | |
122 | struct async_head_user *ahu) | |
a4f4fdd7 | 123 | { |
bf0dc8fa IM |
124 | return syscall(__NR_async_wait, min_wait_events, |
125 | user_ring_idx, ahu); | |
a4f4fdd7 JA |
126 | } |
127 | ||
7756b0d0 | 128 | static inline long async_thread(void *event, struct async_head_user *ahu) |
a4f4fdd7 | 129 | { |
7756b0d0 | 130 | return syscall(__NR_async_thread, event, ahu); |
a4f4fdd7 JA |
131 | } |
132 | ||
133 | static inline long umem_add(unsigned long *uptr, unsigned long inc) | |
134 | { | |
135 | return syscall(__NR_umem_add, uptr, inc); | |
136 | } | |
b6959b55 | 137 | #endif /* FIO_HAVE_SYSLET */ |
a4f4fdd7 | 138 | |
6cefbe33 JA |
139 | enum { |
140 | IOPRIO_CLASS_NONE, | |
141 | IOPRIO_CLASS_RT, | |
142 | IOPRIO_CLASS_BE, | |
143 | IOPRIO_CLASS_IDLE, | |
144 | }; | |
145 | ||
ebac4655 JA |
146 | enum { |
147 | IOPRIO_WHO_PROCESS = 1, | |
148 | IOPRIO_WHO_PGRP, | |
149 | IOPRIO_WHO_USER, | |
150 | }; | |
151 | ||
6cefbe33 | 152 | #define IOPRIO_BITS 16 |
ebac4655 JA |
153 | #define IOPRIO_CLASS_SHIFT 13 |
154 | ||
155 | #ifndef BLKGETSIZE64 | |
156 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) | |
157 | #endif | |
158 | ||
e5b401d4 JA |
159 | #ifndef BLKFLSBUF |
160 | #define BLKFLSBUF _IO(0x12,97) | |
161 | #endif | |
162 | ||
163 | static inline int blockdev_invalidate_cache(int fd) | |
164 | { | |
a16211bb | 165 | return ioctl(fd, BLKFLSBUF); |
e5b401d4 JA |
166 | } |
167 | ||
9104f874 | 168 | static inline int blockdev_size(int fd, unsigned long long *bytes) |
ebac4655 JA |
169 | { |
170 | if (!ioctl(fd, BLKGETSIZE64, bytes)) | |
171 | return 0; | |
172 | ||
173 | return errno; | |
174 | } | |
175 | ||
32cd46a0 JA |
176 | static inline unsigned long long os_phys_mem(void) |
177 | { | |
178 | long pagesize, pages; | |
179 | ||
180 | pagesize = sysconf(_SC_PAGESIZE); | |
181 | pages = sysconf(_SC_PHYS_PAGES); | |
182 | if (pages == -1 || pagesize == -1) | |
183 | return 0; | |
184 | ||
185 | return (unsigned long long) pages * (unsigned long long) pagesize; | |
186 | } | |
187 | ||
6dfd46b9 JA |
188 | static inline void os_random_seed(unsigned long seed, os_random_state_t *rs) |
189 | { | |
190 | srand48_r(seed, rs); | |
191 | } | |
192 | ||
193 | static inline long os_random_long(os_random_state_t *rs) | |
194 | { | |
195 | long val; | |
196 | ||
197 | lrand48_r(rs, &val); | |
198 | return val; | |
199 | } | |
200 | ||
8cc7afa9 | 201 | static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev) |
07e5b264 JA |
202 | { |
203 | struct raw_config_request rq; | |
204 | int fd; | |
205 | ||
206 | if (major(dev) != RAW_MAJOR) | |
8cc7afa9 | 207 | return 1; |
07e5b264 JA |
208 | |
209 | /* | |
210 | * we should be able to find /dev/rawctl or /dev/raw/rawctl | |
211 | */ | |
212 | fd = open("/dev/rawctl", O_RDONLY); | |
213 | if (fd < 0) { | |
214 | fd = open("/dev/raw/rawctl", O_RDONLY); | |
215 | if (fd < 0) | |
8cc7afa9 | 216 | return 1; |
07e5b264 JA |
217 | } |
218 | ||
219 | rq.raw_minor = minor(dev); | |
220 | if (ioctl(fd, RAW_GETBIND, &rq) < 0) { | |
221 | close(fd); | |
8cc7afa9 | 222 | return 1; |
07e5b264 JA |
223 | } |
224 | ||
225 | close(fd); | |
226 | *majdev = rq.block_major; | |
227 | *mindev = rq.block_minor; | |
8cc7afa9 | 228 | return 0; |
07e5b264 JA |
229 | } |
230 | ||
5921e80c JA |
231 | #define FIO_O_NOATIME O_NOATIME |
232 | ||
ebac4655 | 233 | #endif |