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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 |
ebac4655 JA |
21 | |
22 | #define OS_MAP_ANON (MAP_ANONYMOUS) | |
23 | ||
24 | typedef cpu_set_t os_cpu_mask_t; | |
6dfd46b9 | 25 | typedef struct drand48_data os_random_state_t; |
ebac4655 JA |
26 | |
27 | /* | |
28 | * we want fadvise64 really, but it's so tangled... later | |
29 | */ | |
30 | #define fadvise(fd, off, len, advice) \ | |
31 | posix_fadvise((fd), (off_t)(off), (len), (advice)) | |
32 | ||
33 | #define fio_setaffinity(td) \ | |
34 | sched_setaffinity((td)->pid, sizeof((td)->cpumask), &(td)->cpumask) | |
35 | #define fio_getaffinity(pid, ptr) \ | |
36 | sched_getaffinity((pid), sizeof(cpu_set_t), (ptr)) | |
37 | ||
38 | static inline int ioprio_set(int which, int who, int ioprio) | |
39 | { | |
40 | return syscall(__NR_ioprio_set, which, who, ioprio); | |
41 | } | |
42 | ||
97fbdfa1 JA |
43 | /* |
44 | * Just check for SPLICE_F_MOVE, if that isn't there, assume the others | |
45 | * aren't either. | |
46 | */ | |
47 | #ifndef SPLICE_F_MOVE | |
48 | #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */ | |
49 | #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */ | |
50 | /* we may still block on the fd we splice */ | |
51 | /* from/to, of course */ | |
52 | #define SPLICE_F_MORE (0x04) /* expect more data */ | |
53 | #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */ | |
8756e4d4 JA |
54 | |
55 | static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out, | |
56 | size_t len, unsigned long flags) | |
57 | { | |
97fbdfa1 | 58 | return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags); |
8756e4d4 JA |
59 | } |
60 | ||
61 | static inline int tee(int fdin, int fdout, size_t len, unsigned int flags) | |
62 | { | |
97fbdfa1 | 63 | return syscall(__NR_sys_tee, fdin, fdout, len, flags); |
8756e4d4 JA |
64 | } |
65 | ||
66 | static inline int vmsplice(int fd, const struct iovec *iov, | |
67 | unsigned long nr_segs, unsigned int flags) | |
68 | { | |
97fbdfa1 | 69 | return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags); |
8756e4d4 | 70 | } |
97fbdfa1 | 71 | #endif |
8756e4d4 | 72 | |
3feedc60 JA |
73 | #define SPLICE_DEF_SIZE (64*1024) |
74 | ||
ebac4655 JA |
75 | enum { |
76 | IOPRIO_WHO_PROCESS = 1, | |
77 | IOPRIO_WHO_PGRP, | |
78 | IOPRIO_WHO_USER, | |
79 | }; | |
80 | ||
81 | #define IOPRIO_CLASS_SHIFT 13 | |
82 | ||
83 | #ifndef BLKGETSIZE64 | |
84 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) | |
85 | #endif | |
86 | ||
e5b401d4 JA |
87 | #ifndef BLKFLSBUF |
88 | #define BLKFLSBUF _IO(0x12,97) | |
89 | #endif | |
90 | ||
91 | static inline int blockdev_invalidate_cache(int fd) | |
92 | { | |
93 | if (!ioctl(fd, BLKFLSBUF)) | |
94 | return 0; | |
95 | ||
96 | return errno; | |
97 | } | |
98 | ||
9104f874 | 99 | static inline int blockdev_size(int fd, unsigned long long *bytes) |
ebac4655 JA |
100 | { |
101 | if (!ioctl(fd, BLKGETSIZE64, bytes)) | |
102 | return 0; | |
103 | ||
104 | return errno; | |
105 | } | |
106 | ||
32cd46a0 JA |
107 | static inline unsigned long long os_phys_mem(void) |
108 | { | |
109 | long pagesize, pages; | |
110 | ||
111 | pagesize = sysconf(_SC_PAGESIZE); | |
112 | pages = sysconf(_SC_PHYS_PAGES); | |
113 | if (pages == -1 || pagesize == -1) | |
114 | return 0; | |
115 | ||
116 | return (unsigned long long) pages * (unsigned long long) pagesize; | |
117 | } | |
118 | ||
6dfd46b9 JA |
119 | static inline void os_random_seed(unsigned long seed, os_random_state_t *rs) |
120 | { | |
121 | srand48_r(seed, rs); | |
122 | } | |
123 | ||
124 | static inline long os_random_long(os_random_state_t *rs) | |
125 | { | |
126 | long val; | |
127 | ||
128 | lrand48_r(rs, &val); | |
129 | return val; | |
130 | } | |
131 | ||
132 | static inline double os_random_double(os_random_state_t *rs) | |
133 | { | |
134 | double val; | |
135 | ||
136 | drand48_r(rs, &val); | |
137 | return val; | |
138 | } | |
139 | ||
ebac4655 | 140 | #endif |