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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 |
ebac4655 JA |
22 | |
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) \ | |
35 | sched_setaffinity((td)->pid, sizeof((td)->cpumask), &(td)->cpumask) | |
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 | ||
ebac4655 JA |
76 | enum { |
77 | IOPRIO_WHO_PROCESS = 1, | |
78 | IOPRIO_WHO_PGRP, | |
79 | IOPRIO_WHO_USER, | |
80 | }; | |
81 | ||
82 | #define IOPRIO_CLASS_SHIFT 13 | |
83 | ||
84 | #ifndef BLKGETSIZE64 | |
85 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) | |
86 | #endif | |
87 | ||
e5b401d4 JA |
88 | #ifndef BLKFLSBUF |
89 | #define BLKFLSBUF _IO(0x12,97) | |
90 | #endif | |
91 | ||
92 | static inline int blockdev_invalidate_cache(int fd) | |
93 | { | |
94 | if (!ioctl(fd, BLKFLSBUF)) | |
95 | return 0; | |
96 | ||
97 | return errno; | |
98 | } | |
99 | ||
9104f874 | 100 | static inline int blockdev_size(int fd, unsigned long long *bytes) |
ebac4655 JA |
101 | { |
102 | if (!ioctl(fd, BLKGETSIZE64, bytes)) | |
103 | return 0; | |
104 | ||
105 | return errno; | |
106 | } | |
107 | ||
32cd46a0 JA |
108 | static inline unsigned long long os_phys_mem(void) |
109 | { | |
110 | long pagesize, pages; | |
111 | ||
112 | pagesize = sysconf(_SC_PAGESIZE); | |
113 | pages = sysconf(_SC_PHYS_PAGES); | |
114 | if (pages == -1 || pagesize == -1) | |
115 | return 0; | |
116 | ||
117 | return (unsigned long long) pages * (unsigned long long) pagesize; | |
118 | } | |
119 | ||
6dfd46b9 JA |
120 | static inline void os_random_seed(unsigned long seed, os_random_state_t *rs) |
121 | { | |
122 | srand48_r(seed, rs); | |
123 | } | |
124 | ||
125 | static inline long os_random_long(os_random_state_t *rs) | |
126 | { | |
127 | long val; | |
128 | ||
129 | lrand48_r(rs, &val); | |
130 | return val; | |
131 | } | |
132 | ||
133 | static inline double os_random_double(os_random_state_t *rs) | |
134 | { | |
135 | double val; | |
136 | ||
137 | drand48_r(rs, &val); | |
138 | return val; | |
139 | } | |
140 | ||
ebac4655 | 141 | #endif |