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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 |
b6959b55 | 25 | |
ebac4655 JA |
26 | #define OS_MAP_ANON (MAP_ANONYMOUS) |
27 | ||
28 | typedef cpu_set_t os_cpu_mask_t; | |
6dfd46b9 | 29 | typedef struct drand48_data os_random_state_t; |
ebac4655 JA |
30 | |
31 | /* | |
32 | * we want fadvise64 really, but it's so tangled... later | |
33 | */ | |
34 | #define fadvise(fd, off, len, advice) \ | |
35 | posix_fadvise((fd), (off_t)(off), (len), (advice)) | |
36 | ||
37 | #define fio_setaffinity(td) \ | |
2dc1bbeb | 38 | sched_setaffinity((td)->pid, sizeof((td)->o.cpumask), &(td)->o.cpumask) |
ebac4655 JA |
39 | #define fio_getaffinity(pid, ptr) \ |
40 | sched_getaffinity((pid), sizeof(cpu_set_t), (ptr)) | |
41 | ||
42 | static inline int ioprio_set(int which, int who, int ioprio) | |
43 | { | |
44 | return syscall(__NR_ioprio_set, which, who, ioprio); | |
45 | } | |
46 | ||
97fbdfa1 JA |
47 | /* |
48 | * Just check for SPLICE_F_MOVE, if that isn't there, assume the others | |
49 | * aren't either. | |
50 | */ | |
51 | #ifndef SPLICE_F_MOVE | |
52 | #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */ | |
53 | #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */ | |
54 | /* we may still block on the fd we splice */ | |
55 | /* from/to, of course */ | |
56 | #define SPLICE_F_MORE (0x04) /* expect more data */ | |
57 | #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */ | |
8756e4d4 JA |
58 | |
59 | static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out, | |
60 | size_t len, unsigned long flags) | |
61 | { | |
97fbdfa1 | 62 | return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags); |
8756e4d4 JA |
63 | } |
64 | ||
65 | static inline int tee(int fdin, int fdout, size_t len, unsigned int flags) | |
66 | { | |
97fbdfa1 | 67 | return syscall(__NR_sys_tee, fdin, fdout, len, flags); |
8756e4d4 JA |
68 | } |
69 | ||
70 | static inline int vmsplice(int fd, const struct iovec *iov, | |
71 | unsigned long nr_segs, unsigned int flags) | |
72 | { | |
97fbdfa1 | 73 | return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags); |
8756e4d4 | 74 | } |
97fbdfa1 | 75 | #endif |
8756e4d4 | 76 | |
3feedc60 JA |
77 | #define SPLICE_DEF_SIZE (64*1024) |
78 | ||
b6959b55 | 79 | #ifdef FIO_HAVE_SYSLET |
bf0dc8fa IM |
80 | |
81 | struct syslet_uatom; | |
82 | struct async_head_user; | |
83 | ||
a4f4fdd7 JA |
84 | /* |
85 | * syslet stuff | |
86 | */ | |
bf0dc8fa IM |
87 | static inline struct syslet_uatom * |
88 | async_exec(struct syslet_uatom *atom, struct async_head_user *ahu) | |
a4f4fdd7 | 89 | { |
1df341ff | 90 | return (void *) syscall(__NR_async_exec, atom, ahu); |
a4f4fdd7 JA |
91 | } |
92 | ||
bf0dc8fa IM |
93 | static inline long |
94 | async_wait(unsigned long min_wait_events, unsigned long user_ring_idx, | |
95 | struct async_head_user *ahu) | |
a4f4fdd7 | 96 | { |
bf0dc8fa IM |
97 | return syscall(__NR_async_wait, min_wait_events, |
98 | user_ring_idx, ahu); | |
a4f4fdd7 JA |
99 | } |
100 | ||
7756b0d0 | 101 | static inline long async_thread(void *event, struct async_head_user *ahu) |
a4f4fdd7 | 102 | { |
7756b0d0 | 103 | return syscall(__NR_async_thread, event, ahu); |
a4f4fdd7 JA |
104 | } |
105 | ||
106 | static inline long umem_add(unsigned long *uptr, unsigned long inc) | |
107 | { | |
108 | return syscall(__NR_umem_add, uptr, inc); | |
109 | } | |
b6959b55 | 110 | #endif /* FIO_HAVE_SYSLET */ |
a4f4fdd7 | 111 | |
ebac4655 JA |
112 | enum { |
113 | IOPRIO_WHO_PROCESS = 1, | |
114 | IOPRIO_WHO_PGRP, | |
115 | IOPRIO_WHO_USER, | |
116 | }; | |
117 | ||
118 | #define IOPRIO_CLASS_SHIFT 13 | |
119 | ||
120 | #ifndef BLKGETSIZE64 | |
121 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) | |
122 | #endif | |
123 | ||
e5b401d4 JA |
124 | #ifndef BLKFLSBUF |
125 | #define BLKFLSBUF _IO(0x12,97) | |
126 | #endif | |
127 | ||
128 | static inline int blockdev_invalidate_cache(int fd) | |
129 | { | |
a16211bb | 130 | return ioctl(fd, BLKFLSBUF); |
e5b401d4 JA |
131 | } |
132 | ||
9104f874 | 133 | static inline int blockdev_size(int fd, unsigned long long *bytes) |
ebac4655 JA |
134 | { |
135 | if (!ioctl(fd, BLKGETSIZE64, bytes)) | |
136 | return 0; | |
137 | ||
138 | return errno; | |
139 | } | |
140 | ||
32cd46a0 JA |
141 | static inline unsigned long long os_phys_mem(void) |
142 | { | |
143 | long pagesize, pages; | |
144 | ||
145 | pagesize = sysconf(_SC_PAGESIZE); | |
146 | pages = sysconf(_SC_PHYS_PAGES); | |
147 | if (pages == -1 || pagesize == -1) | |
148 | return 0; | |
149 | ||
150 | return (unsigned long long) pages * (unsigned long long) pagesize; | |
151 | } | |
152 | ||
6dfd46b9 JA |
153 | static inline void os_random_seed(unsigned long seed, os_random_state_t *rs) |
154 | { | |
155 | srand48_r(seed, rs); | |
156 | } | |
157 | ||
158 | static inline long os_random_long(os_random_state_t *rs) | |
159 | { | |
160 | long val; | |
161 | ||
162 | lrand48_r(rs, &val); | |
163 | return val; | |
164 | } | |
165 | ||
166 | static inline double os_random_double(os_random_state_t *rs) | |
167 | { | |
168 | double val; | |
169 | ||
170 | drand48_r(rs, &val); | |
171 | return val; | |
172 | } | |
173 | ||
07e5b264 JA |
174 | static inline void fio_lookup_raw(dev_t dev, int *majdev, int *mindev) |
175 | { | |
176 | struct raw_config_request rq; | |
177 | int fd; | |
178 | ||
179 | if (major(dev) != RAW_MAJOR) | |
180 | return; | |
181 | ||
182 | /* | |
183 | * we should be able to find /dev/rawctl or /dev/raw/rawctl | |
184 | */ | |
185 | fd = open("/dev/rawctl", O_RDONLY); | |
186 | if (fd < 0) { | |
187 | fd = open("/dev/raw/rawctl", O_RDONLY); | |
188 | if (fd < 0) | |
189 | return; | |
190 | } | |
191 | ||
192 | rq.raw_minor = minor(dev); | |
193 | if (ioctl(fd, RAW_GETBIND, &rq) < 0) { | |
194 | close(fd); | |
195 | return; | |
196 | } | |
197 | ||
198 | close(fd); | |
199 | *majdev = rq.block_major; | |
200 | *mindev = rq.block_minor; | |
201 | } | |
202 | ||
ebac4655 | 203 | #endif |