Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 1 | #ifndef FIO_OS_LINUX_H |
| 2 | #define FIO_OS_LINUX_H |
| 3 | |
| 4 | #include <sys/ioctl.h> |
Jens Axboe | 8756e4d | 2006-05-27 20:24:53 +0200 | [diff] [blame] | 5 | #include <sys/uio.h> |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 6 | #include <sys/syscall.h> |
| 7 | #include <unistd.h> |
Jens Axboe | 97fbdfa | 2006-10-05 13:44:15 +0200 | [diff] [blame] | 8 | #include <fcntl.h> |
Jens Axboe | ea42179 | 2006-07-11 09:11:07 +0200 | [diff] [blame] | 9 | #include <linux/unistd.h> |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 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 |
Jens Axboe | ba4f892 | 2006-01-26 13:45:54 -0800 | [diff] [blame] | 17 | #define FIO_HAVE_IOPRIO |
Jens Axboe | 8756e4d | 2006-05-27 20:24:53 +0200 | [diff] [blame] | 18 | #define FIO_HAVE_SPLICE |
Jens Axboe | 22f78b3 | 2006-06-07 11:30:07 +0200 | [diff] [blame] | 19 | #define FIO_HAVE_IOSCHED_SWITCH |
Jens Axboe | 2c0ecd2 | 2006-06-08 13:25:41 +0200 | [diff] [blame] | 20 | #define FIO_HAVE_ODIRECT |
Jens Axboe | 74b025b | 2006-12-19 15:18:14 +0100 | [diff] [blame] | 21 | #define FIO_HAVE_HUGETLB |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 22 | |
| 23 | #define OS_MAP_ANON (MAP_ANONYMOUS) |
| 24 | |
| 25 | typedef cpu_set_t os_cpu_mask_t; |
Jens Axboe | 6dfd46b | 2006-06-07 13:57:06 +0200 | [diff] [blame] | 26 | typedef struct drand48_data os_random_state_t; |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 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 | |
Jens Axboe | 97fbdfa | 2006-10-05 13:44:15 +0200 | [diff] [blame] | 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 |
Jens Axboe | 8756e4d | 2006-05-27 20:24:53 +0200 | [diff] [blame] | 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 */ |
| 55 | |
Jens Axboe | 97fbdfa | 2006-10-05 13:44:15 +0200 | [diff] [blame] | 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 | { |
| 59 | return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags); |
| 60 | } |
| 61 | |
| 62 | static inline int tee(int fdin, int fdout, size_t len, unsigned int flags) |
| 63 | { |
| 64 | return syscall(__NR_sys_tee, fdin, fdout, len, flags); |
| 65 | } |
| 66 | |
| 67 | static inline int vmsplice(int fd, const struct iovec *iov, |
| 68 | unsigned long nr_segs, unsigned int flags) |
| 69 | { |
| 70 | return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags); |
| 71 | } |
| 72 | #endif |
| 73 | |
Jens Axboe | 3feedc6 | 2006-05-28 20:13:51 +0200 | [diff] [blame] | 74 | #define SPLICE_DEF_SIZE (64*1024) |
| 75 | |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 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 | |
Jens Axboe | e5b401d | 2006-10-18 16:03:40 +0200 | [diff] [blame] | 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 | |
Jens Axboe | 9104f87 | 2005-12-28 23:50:45 +0100 | [diff] [blame] | 100 | static inline int blockdev_size(int fd, unsigned long long *bytes) |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 101 | { |
| 102 | if (!ioctl(fd, BLKGETSIZE64, bytes)) |
| 103 | return 0; |
| 104 | |
| 105 | return errno; |
| 106 | } |
| 107 | |
Jens Axboe | 32cd46a | 2006-06-07 13:40:40 +0200 | [diff] [blame] | 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 | |
Jens Axboe | 6dfd46b | 2006-06-07 13:57:06 +0200 | [diff] [blame] | 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 | |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 141 | #endif |