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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 JA |
22 | |
23 | /* | |
24 | * Only for x86 currently | |
25 | */ | |
26 | #if defined(__i386__) | |
a4f4fdd7 | 27 | #define FIO_HAVE_SYSLET |
b6959b55 | 28 | #endif |
ebac4655 JA |
29 | |
30 | #define OS_MAP_ANON (MAP_ANONYMOUS) | |
31 | ||
32 | typedef cpu_set_t os_cpu_mask_t; | |
6dfd46b9 | 33 | typedef struct drand48_data os_random_state_t; |
ebac4655 JA |
34 | |
35 | /* | |
36 | * we want fadvise64 really, but it's so tangled... later | |
37 | */ | |
38 | #define fadvise(fd, off, len, advice) \ | |
39 | posix_fadvise((fd), (off_t)(off), (len), (advice)) | |
40 | ||
41 | #define fio_setaffinity(td) \ | |
42 | sched_setaffinity((td)->pid, sizeof((td)->cpumask), &(td)->cpumask) | |
43 | #define fio_getaffinity(pid, ptr) \ | |
44 | sched_getaffinity((pid), sizeof(cpu_set_t), (ptr)) | |
45 | ||
46 | static inline int ioprio_set(int which, int who, int ioprio) | |
47 | { | |
48 | return syscall(__NR_ioprio_set, which, who, ioprio); | |
49 | } | |
50 | ||
97fbdfa1 JA |
51 | /* |
52 | * Just check for SPLICE_F_MOVE, if that isn't there, assume the others | |
53 | * aren't either. | |
54 | */ | |
55 | #ifndef SPLICE_F_MOVE | |
56 | #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */ | |
57 | #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */ | |
58 | /* we may still block on the fd we splice */ | |
59 | /* from/to, of course */ | |
60 | #define SPLICE_F_MORE (0x04) /* expect more data */ | |
61 | #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */ | |
8756e4d4 JA |
62 | |
63 | static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out, | |
64 | size_t len, unsigned long flags) | |
65 | { | |
97fbdfa1 | 66 | return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags); |
8756e4d4 JA |
67 | } |
68 | ||
69 | static inline int tee(int fdin, int fdout, size_t len, unsigned int flags) | |
70 | { | |
97fbdfa1 | 71 | return syscall(__NR_sys_tee, fdin, fdout, len, flags); |
8756e4d4 JA |
72 | } |
73 | ||
74 | static inline int vmsplice(int fd, const struct iovec *iov, | |
75 | unsigned long nr_segs, unsigned int flags) | |
76 | { | |
97fbdfa1 | 77 | return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags); |
8756e4d4 | 78 | } |
97fbdfa1 | 79 | #endif |
8756e4d4 | 80 | |
3feedc60 JA |
81 | #define SPLICE_DEF_SIZE (64*1024) |
82 | ||
b6959b55 | 83 | #ifdef FIO_HAVE_SYSLET |
bf0dc8fa IM |
84 | |
85 | struct syslet_uatom; | |
86 | struct async_head_user; | |
87 | ||
a4f4fdd7 JA |
88 | /* |
89 | * syslet stuff | |
90 | */ | |
bf0dc8fa IM |
91 | static inline struct syslet_uatom * |
92 | async_exec(struct syslet_uatom *atom, struct async_head_user *ahu) | |
a4f4fdd7 | 93 | { |
1df341ff | 94 | return (void *) syscall(__NR_async_exec, atom, ahu); |
a4f4fdd7 JA |
95 | } |
96 | ||
bf0dc8fa IM |
97 | static inline long |
98 | async_wait(unsigned long min_wait_events, unsigned long user_ring_idx, | |
99 | struct async_head_user *ahu) | |
a4f4fdd7 | 100 | { |
bf0dc8fa IM |
101 | return syscall(__NR_async_wait, min_wait_events, |
102 | user_ring_idx, ahu); | |
a4f4fdd7 JA |
103 | } |
104 | ||
bf0dc8fa | 105 | static inline long async_thread(void) |
a4f4fdd7 | 106 | { |
bf0dc8fa | 107 | return syscall(__NR_async_thread); |
a4f4fdd7 JA |
108 | } |
109 | ||
110 | static inline long umem_add(unsigned long *uptr, unsigned long inc) | |
111 | { | |
112 | return syscall(__NR_umem_add, uptr, inc); | |
113 | } | |
b6959b55 | 114 | #endif /* FIO_HAVE_SYSLET */ |
a4f4fdd7 | 115 | |
ebac4655 JA |
116 | enum { |
117 | IOPRIO_WHO_PROCESS = 1, | |
118 | IOPRIO_WHO_PGRP, | |
119 | IOPRIO_WHO_USER, | |
120 | }; | |
121 | ||
122 | #define IOPRIO_CLASS_SHIFT 13 | |
123 | ||
124 | #ifndef BLKGETSIZE64 | |
125 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) | |
126 | #endif | |
127 | ||
e5b401d4 JA |
128 | #ifndef BLKFLSBUF |
129 | #define BLKFLSBUF _IO(0x12,97) | |
130 | #endif | |
131 | ||
132 | static inline int blockdev_invalidate_cache(int fd) | |
133 | { | |
134 | if (!ioctl(fd, BLKFLSBUF)) | |
135 | return 0; | |
136 | ||
137 | return errno; | |
138 | } | |
139 | ||
9104f874 | 140 | static inline int blockdev_size(int fd, unsigned long long *bytes) |
ebac4655 JA |
141 | { |
142 | if (!ioctl(fd, BLKGETSIZE64, bytes)) | |
143 | return 0; | |
144 | ||
145 | return errno; | |
146 | } | |
147 | ||
32cd46a0 JA |
148 | static inline unsigned long long os_phys_mem(void) |
149 | { | |
150 | long pagesize, pages; | |
151 | ||
152 | pagesize = sysconf(_SC_PAGESIZE); | |
153 | pages = sysconf(_SC_PHYS_PAGES); | |
154 | if (pages == -1 || pagesize == -1) | |
155 | return 0; | |
156 | ||
157 | return (unsigned long long) pages * (unsigned long long) pagesize; | |
158 | } | |
159 | ||
6dfd46b9 JA |
160 | static inline void os_random_seed(unsigned long seed, os_random_state_t *rs) |
161 | { | |
162 | srand48_r(seed, rs); | |
163 | } | |
164 | ||
165 | static inline long os_random_long(os_random_state_t *rs) | |
166 | { | |
167 | long val; | |
168 | ||
169 | lrand48_r(rs, &val); | |
170 | return val; | |
171 | } | |
172 | ||
173 | static inline double os_random_double(os_random_state_t *rs) | |
174 | { | |
175 | double val; | |
176 | ||
177 | drand48_r(rs, &val); | |
178 | return val; | |
179 | } | |
180 | ||
ebac4655 | 181 | #endif |