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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> |
ebac4655 JA |
10 | |
11 | #define FIO_HAVE_LIBAIO | |
12 | #define FIO_HAVE_POSIXAIO | |
13 | #define FIO_HAVE_FADVISE | |
14 | #define FIO_HAVE_CPU_AFFINITY | |
15 | #define FIO_HAVE_DISK_UTIL | |
16 | #define FIO_HAVE_SGIO | |
ba4f8923 | 17 | #define FIO_HAVE_IOPRIO |
8756e4d4 | 18 | #define FIO_HAVE_SPLICE |
22f78b32 | 19 | #define FIO_HAVE_IOSCHED_SWITCH |
2c0ecd28 | 20 | #define FIO_HAVE_ODIRECT |
74b025b0 | 21 | #define FIO_HAVE_HUGETLB |
b6959b55 | 22 | |
ebac4655 JA |
23 | #define OS_MAP_ANON (MAP_ANONYMOUS) |
24 | ||
25 | typedef cpu_set_t os_cpu_mask_t; | |
6dfd46b9 | 26 | typedef struct drand48_data os_random_state_t; |
ebac4655 JA |
27 | |
28 | /* | |
29 | * we want fadvise64 really, but it's so tangled... later | |
30 | */ | |
31 | #define fadvise(fd, off, len, advice) \ | |
32 | posix_fadvise((fd), (off_t)(off), (len), (advice)) | |
33 | ||
34 | #define fio_setaffinity(td) \ | |
2dc1bbeb | 35 | sched_setaffinity((td)->pid, sizeof((td)->o.cpumask), &(td)->o.cpumask) |
ebac4655 JA |
36 | #define fio_getaffinity(pid, ptr) \ |
37 | sched_getaffinity((pid), sizeof(cpu_set_t), (ptr)) | |
38 | ||
39 | static inline int ioprio_set(int which, int who, int ioprio) | |
40 | { | |
41 | return syscall(__NR_ioprio_set, which, who, ioprio); | |
42 | } | |
43 | ||
97fbdfa1 JA |
44 | /* |
45 | * Just check for SPLICE_F_MOVE, if that isn't there, assume the others | |
46 | * aren't either. | |
47 | */ | |
48 | #ifndef SPLICE_F_MOVE | |
49 | #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */ | |
50 | #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */ | |
51 | /* we may still block on the fd we splice */ | |
52 | /* from/to, of course */ | |
53 | #define SPLICE_F_MORE (0x04) /* expect more data */ | |
54 | #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */ | |
8756e4d4 JA |
55 | |
56 | static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out, | |
57 | size_t len, unsigned long flags) | |
58 | { | |
97fbdfa1 | 59 | return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags); |
8756e4d4 JA |
60 | } |
61 | ||
62 | static inline int tee(int fdin, int fdout, size_t len, unsigned int flags) | |
63 | { | |
97fbdfa1 | 64 | return syscall(__NR_sys_tee, fdin, fdout, len, flags); |
8756e4d4 JA |
65 | } |
66 | ||
67 | static inline int vmsplice(int fd, const struct iovec *iov, | |
68 | unsigned long nr_segs, unsigned int flags) | |
69 | { | |
97fbdfa1 | 70 | return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags); |
8756e4d4 | 71 | } |
97fbdfa1 | 72 | #endif |
8756e4d4 | 73 | |
3feedc60 JA |
74 | #define SPLICE_DEF_SIZE (64*1024) |
75 | ||
b6959b55 | 76 | #ifdef FIO_HAVE_SYSLET |
bf0dc8fa IM |
77 | |
78 | struct syslet_uatom; | |
79 | struct async_head_user; | |
80 | ||
a4f4fdd7 JA |
81 | /* |
82 | * syslet stuff | |
83 | */ | |
bf0dc8fa IM |
84 | static inline struct syslet_uatom * |
85 | async_exec(struct syslet_uatom *atom, struct async_head_user *ahu) | |
a4f4fdd7 | 86 | { |
1df341ff | 87 | return (void *) syscall(__NR_async_exec, atom, ahu); |
a4f4fdd7 JA |
88 | } |
89 | ||
bf0dc8fa IM |
90 | static inline long |
91 | async_wait(unsigned long min_wait_events, unsigned long user_ring_idx, | |
92 | struct async_head_user *ahu) | |
a4f4fdd7 | 93 | { |
bf0dc8fa IM |
94 | return syscall(__NR_async_wait, min_wait_events, |
95 | user_ring_idx, ahu); | |
a4f4fdd7 JA |
96 | } |
97 | ||
7756b0d0 | 98 | static inline long async_thread(void *event, struct async_head_user *ahu) |
a4f4fdd7 | 99 | { |
7756b0d0 | 100 | return syscall(__NR_async_thread, event, ahu); |
a4f4fdd7 JA |
101 | } |
102 | ||
103 | static inline long umem_add(unsigned long *uptr, unsigned long inc) | |
104 | { | |
105 | return syscall(__NR_umem_add, uptr, inc); | |
106 | } | |
b6959b55 | 107 | #endif /* FIO_HAVE_SYSLET */ |
a4f4fdd7 | 108 | |
ebac4655 JA |
109 | enum { |
110 | IOPRIO_WHO_PROCESS = 1, | |
111 | IOPRIO_WHO_PGRP, | |
112 | IOPRIO_WHO_USER, | |
113 | }; | |
114 | ||
115 | #define IOPRIO_CLASS_SHIFT 13 | |
116 | ||
117 | #ifndef BLKGETSIZE64 | |
118 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) | |
119 | #endif | |
120 | ||
e5b401d4 JA |
121 | #ifndef BLKFLSBUF |
122 | #define BLKFLSBUF _IO(0x12,97) | |
123 | #endif | |
124 | ||
125 | static inline int blockdev_invalidate_cache(int fd) | |
126 | { | |
a16211bb | 127 | return ioctl(fd, BLKFLSBUF); |
e5b401d4 JA |
128 | } |
129 | ||
9104f874 | 130 | static inline int blockdev_size(int fd, unsigned long long *bytes) |
ebac4655 JA |
131 | { |
132 | if (!ioctl(fd, BLKGETSIZE64, bytes)) | |
133 | return 0; | |
134 | ||
135 | return errno; | |
136 | } | |
137 | ||
32cd46a0 JA |
138 | static inline unsigned long long os_phys_mem(void) |
139 | { | |
140 | long pagesize, pages; | |
141 | ||
142 | pagesize = sysconf(_SC_PAGESIZE); | |
143 | pages = sysconf(_SC_PHYS_PAGES); | |
144 | if (pages == -1 || pagesize == -1) | |
145 | return 0; | |
146 | ||
147 | return (unsigned long long) pages * (unsigned long long) pagesize; | |
148 | } | |
149 | ||
6dfd46b9 JA |
150 | static inline void os_random_seed(unsigned long seed, os_random_state_t *rs) |
151 | { | |
152 | srand48_r(seed, rs); | |
153 | } | |
154 | ||
155 | static inline long os_random_long(os_random_state_t *rs) | |
156 | { | |
157 | long val; | |
158 | ||
159 | lrand48_r(rs, &val); | |
160 | return val; | |
161 | } | |
162 | ||
163 | static inline double os_random_double(os_random_state_t *rs) | |
164 | { | |
165 | double val; | |
166 | ||
167 | drand48_r(rs, &val); | |
168 | return val; | |
169 | } | |
170 | ||
ebac4655 | 171 | #endif |