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 | 07e5b26 | 2007-04-02 14:46:07 +0200 | [diff] [blame] | 10 | #include <linux/raw.h> |
| 11 | #include <linux/major.h> |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 12 | |
Jens Axboe | f3de88a | 2008-02-24 21:36:00 +0100 | [diff] [blame] | 13 | #include "indirect.h" |
| 14 | |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 15 | #define FIO_HAVE_LIBAIO |
| 16 | #define FIO_HAVE_POSIXAIO |
| 17 | #define FIO_HAVE_FADVISE |
| 18 | #define FIO_HAVE_CPU_AFFINITY |
| 19 | #define FIO_HAVE_DISK_UTIL |
| 20 | #define FIO_HAVE_SGIO |
Jens Axboe | ba4f892 | 2006-01-26 13:45:54 -0800 | [diff] [blame] | 21 | #define FIO_HAVE_IOPRIO |
Jens Axboe | 8756e4d | 2006-05-27 20:24:53 +0200 | [diff] [blame] | 22 | #define FIO_HAVE_SPLICE |
Jens Axboe | 22f78b3 | 2006-06-07 11:30:07 +0200 | [diff] [blame] | 23 | #define FIO_HAVE_IOSCHED_SWITCH |
Jens Axboe | 2c0ecd2 | 2006-06-08 13:25:41 +0200 | [diff] [blame] | 24 | #define FIO_HAVE_ODIRECT |
Jens Axboe | 74b025b | 2006-12-19 15:18:14 +0100 | [diff] [blame] | 25 | #define FIO_HAVE_HUGETLB |
Jens Axboe | 07e5b26 | 2007-04-02 14:46:07 +0200 | [diff] [blame] | 26 | #define FIO_HAVE_RAWBIND |
Jens Axboe | 5e62c22 | 2007-05-22 13:27:30 +0200 | [diff] [blame] | 27 | #define FIO_HAVE_BLKTRACE |
Jens Axboe | b6959b5 | 2007-02-14 21:40:27 +0000 | [diff] [blame] | 28 | |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 29 | #define OS_MAP_ANON (MAP_ANONYMOUS) |
| 30 | |
Shawn Lewis | 4d8947d | 2007-07-25 07:51:58 +0200 | [diff] [blame] | 31 | #ifndef CLOCK_MONOTONIC |
| 32 | #define CLOCK_MONOTONIC 1 |
| 33 | #endif |
| 34 | |
| 35 | #ifdef FIO_HAVE_CPU_AFFINITY |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 36 | typedef cpu_set_t os_cpu_mask_t; |
Shawn Lewis | 4d8947d | 2007-07-25 07:51:58 +0200 | [diff] [blame] | 37 | #else |
| 38 | typedef int os_cpu_mask_t; |
| 39 | #endif |
Jens Axboe | 6dfd46b | 2006-06-07 13:57:06 +0200 | [diff] [blame] | 40 | typedef struct drand48_data os_random_state_t; |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 41 | |
| 42 | /* |
| 43 | * we want fadvise64 really, but it's so tangled... later |
| 44 | */ |
Shawn Lewis | 4d8947d | 2007-07-25 07:51:58 +0200 | [diff] [blame] | 45 | #ifdef FIO_HAVE_FADVISE |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 46 | #define fadvise(fd, off, len, advice) \ |
| 47 | posix_fadvise((fd), (off_t)(off), (len), (advice)) |
Shawn Lewis | 4d8947d | 2007-07-25 07:51:58 +0200 | [diff] [blame] | 48 | #endif |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 49 | |
Jens Axboe | c8f025f | 2007-05-22 17:06:24 +0200 | [diff] [blame] | 50 | /* |
| 51 | * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want |
| 52 | * the affinity helpers to work. |
| 53 | */ |
Shawn Lewis | 4d8947d | 2007-07-25 07:51:58 +0200 | [diff] [blame] | 54 | #ifdef FIO_HAVE_CPU_AFFINITY |
Jens Axboe | c8f025f | 2007-05-22 17:06:24 +0200 | [diff] [blame] | 55 | #ifndef GLIBC_2_3_2 |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 56 | #define fio_setaffinity(td) \ |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 57 | sched_setaffinity((td)->pid, sizeof((td)->o.cpumask), &(td)->o.cpumask) |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 58 | #define fio_getaffinity(pid, ptr) \ |
| 59 | sched_getaffinity((pid), sizeof(cpu_set_t), (ptr)) |
Jens Axboe | c8f025f | 2007-05-22 17:06:24 +0200 | [diff] [blame] | 60 | #else |
| 61 | #define fio_setaffinity(td) \ |
| 62 | sched_setaffinity((td)->pid, &(td)->o.cpumask) |
| 63 | #define fio_getaffinity(pid, ptr) \ |
| 64 | sched_getaffinity((pid), (ptr)) |
| 65 | #endif |
Shawn Lewis | 4d8947d | 2007-07-25 07:51:58 +0200 | [diff] [blame] | 66 | #endif |
| 67 | |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 68 | static inline int ioprio_set(int which, int who, int ioprio) |
| 69 | { |
| 70 | return syscall(__NR_ioprio_set, which, who, ioprio); |
| 71 | } |
| 72 | |
Jens Axboe | 97fbdfa | 2006-10-05 13:44:15 +0200 | [diff] [blame] | 73 | /* |
| 74 | * Just check for SPLICE_F_MOVE, if that isn't there, assume the others |
| 75 | * aren't either. |
| 76 | */ |
| 77 | #ifndef SPLICE_F_MOVE |
Jens Axboe | 8756e4d | 2006-05-27 20:24:53 +0200 | [diff] [blame] | 78 | #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */ |
| 79 | #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */ |
| 80 | /* we may still block on the fd we splice */ |
| 81 | /* from/to, of course */ |
| 82 | #define SPLICE_F_MORE (0x04) /* expect more data */ |
| 83 | #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */ |
| 84 | |
Jens Axboe | 97fbdfa | 2006-10-05 13:44:15 +0200 | [diff] [blame] | 85 | static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out, |
Jens Axboe | 495ee9b | 2007-06-08 11:24:58 +0200 | [diff] [blame] | 86 | size_t len, unsigned int flags) |
Jens Axboe | 97fbdfa | 2006-10-05 13:44:15 +0200 | [diff] [blame] | 87 | { |
| 88 | return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags); |
| 89 | } |
| 90 | |
| 91 | static inline int tee(int fdin, int fdout, size_t len, unsigned int flags) |
| 92 | { |
| 93 | return syscall(__NR_sys_tee, fdin, fdout, len, flags); |
| 94 | } |
| 95 | |
| 96 | static inline int vmsplice(int fd, const struct iovec *iov, |
| 97 | unsigned long nr_segs, unsigned int flags) |
| 98 | { |
| 99 | return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags); |
| 100 | } |
| 101 | #endif |
| 102 | |
Jens Axboe | 3feedc6 | 2006-05-28 20:13:51 +0200 | [diff] [blame] | 103 | #define SPLICE_DEF_SIZE (64*1024) |
| 104 | |
Jens Axboe | b6959b5 | 2007-02-14 21:40:27 +0000 | [diff] [blame] | 105 | #ifdef FIO_HAVE_SYSLET |
Ingo Molnar | bf0dc8f | 2007-02-21 23:25:44 +0100 | [diff] [blame] | 106 | |
| 107 | struct syslet_uatom; |
| 108 | struct async_head_user; |
| 109 | |
Jens Axboe | a4f4fdd | 2007-02-14 01:16:39 +0100 | [diff] [blame] | 110 | /* |
| 111 | * syslet stuff |
| 112 | */ |
Ingo Molnar | bf0dc8f | 2007-02-21 23:25:44 +0100 | [diff] [blame] | 113 | static inline struct syslet_uatom * |
| 114 | async_exec(struct syslet_uatom *atom, struct async_head_user *ahu) |
Jens Axboe | a4f4fdd | 2007-02-14 01:16:39 +0100 | [diff] [blame] | 115 | { |
Jens Axboe | 1df341f | 2007-02-22 14:08:13 +0100 | [diff] [blame] | 116 | return (void *) syscall(__NR_async_exec, atom, ahu); |
Jens Axboe | a4f4fdd | 2007-02-14 01:16:39 +0100 | [diff] [blame] | 117 | } |
| 118 | |
Ingo Molnar | bf0dc8f | 2007-02-21 23:25:44 +0100 | [diff] [blame] | 119 | static inline long |
| 120 | async_wait(unsigned long min_wait_events, unsigned long user_ring_idx, |
| 121 | struct async_head_user *ahu) |
Jens Axboe | a4f4fdd | 2007-02-14 01:16:39 +0100 | [diff] [blame] | 122 | { |
Ingo Molnar | bf0dc8f | 2007-02-21 23:25:44 +0100 | [diff] [blame] | 123 | return syscall(__NR_async_wait, min_wait_events, |
| 124 | user_ring_idx, ahu); |
Jens Axboe | a4f4fdd | 2007-02-14 01:16:39 +0100 | [diff] [blame] | 125 | } |
| 126 | |
Jens Axboe | 7756b0d | 2007-02-26 10:22:31 +0100 | [diff] [blame] | 127 | static inline long async_thread(void *event, struct async_head_user *ahu) |
Jens Axboe | a4f4fdd | 2007-02-14 01:16:39 +0100 | [diff] [blame] | 128 | { |
Jens Axboe | 7756b0d | 2007-02-26 10:22:31 +0100 | [diff] [blame] | 129 | return syscall(__NR_async_thread, event, ahu); |
Jens Axboe | a4f4fdd | 2007-02-14 01:16:39 +0100 | [diff] [blame] | 130 | } |
| 131 | |
| 132 | static inline long umem_add(unsigned long *uptr, unsigned long inc) |
| 133 | { |
| 134 | return syscall(__NR_umem_add, uptr, inc); |
| 135 | } |
Jens Axboe | b6959b5 | 2007-02-14 21:40:27 +0000 | [diff] [blame] | 136 | #endif /* FIO_HAVE_SYSLET */ |
Jens Axboe | a4f4fdd | 2007-02-14 01:16:39 +0100 | [diff] [blame] | 137 | |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 138 | enum { |
Jens Axboe | 6cefbe3 | 2007-04-18 12:46:56 +0200 | [diff] [blame] | 139 | IOPRIO_CLASS_NONE, |
| 140 | IOPRIO_CLASS_RT, |
| 141 | IOPRIO_CLASS_BE, |
| 142 | IOPRIO_CLASS_IDLE, |
| 143 | }; |
| 144 | |
| 145 | enum { |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 146 | IOPRIO_WHO_PROCESS = 1, |
| 147 | IOPRIO_WHO_PGRP, |
| 148 | IOPRIO_WHO_USER, |
| 149 | }; |
| 150 | |
Jens Axboe | 6cefbe3 | 2007-04-18 12:46:56 +0200 | [diff] [blame] | 151 | #define IOPRIO_BITS 16 |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 152 | #define IOPRIO_CLASS_SHIFT 13 |
| 153 | |
| 154 | #ifndef BLKGETSIZE64 |
| 155 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) |
| 156 | #endif |
| 157 | |
Jens Axboe | e5b401d | 2006-10-18 16:03:40 +0200 | [diff] [blame] | 158 | #ifndef BLKFLSBUF |
| 159 | #define BLKFLSBUF _IO(0x12,97) |
| 160 | #endif |
| 161 | |
| 162 | static inline int blockdev_invalidate_cache(int fd) |
| 163 | { |
Jens Axboe | a16211b | 2007-03-15 11:35:33 +0100 | [diff] [blame] | 164 | return ioctl(fd, BLKFLSBUF); |
Jens Axboe | e5b401d | 2006-10-18 16:03:40 +0200 | [diff] [blame] | 165 | } |
| 166 | |
Jens Axboe | 9104f87 | 2005-12-28 23:50:45 +0100 | [diff] [blame] | 167 | static inline int blockdev_size(int fd, unsigned long long *bytes) |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 168 | { |
| 169 | if (!ioctl(fd, BLKGETSIZE64, bytes)) |
| 170 | return 0; |
| 171 | |
| 172 | return errno; |
| 173 | } |
| 174 | |
Jens Axboe | 32cd46a | 2006-06-07 13:40:40 +0200 | [diff] [blame] | 175 | static inline unsigned long long os_phys_mem(void) |
| 176 | { |
| 177 | long pagesize, pages; |
| 178 | |
| 179 | pagesize = sysconf(_SC_PAGESIZE); |
| 180 | pages = sysconf(_SC_PHYS_PAGES); |
| 181 | if (pages == -1 || pagesize == -1) |
| 182 | return 0; |
| 183 | |
| 184 | return (unsigned long long) pages * (unsigned long long) pagesize; |
| 185 | } |
| 186 | |
Jens Axboe | 6dfd46b | 2006-06-07 13:57:06 +0200 | [diff] [blame] | 187 | static inline void os_random_seed(unsigned long seed, os_random_state_t *rs) |
| 188 | { |
| 189 | srand48_r(seed, rs); |
| 190 | } |
| 191 | |
| 192 | static inline long os_random_long(os_random_state_t *rs) |
| 193 | { |
| 194 | long val; |
| 195 | |
| 196 | lrand48_r(rs, &val); |
| 197 | return val; |
| 198 | } |
| 199 | |
Jens Axboe | 8cc7afa | 2007-04-17 09:06:43 +0200 | [diff] [blame] | 200 | static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev) |
Jens Axboe | 07e5b26 | 2007-04-02 14:46:07 +0200 | [diff] [blame] | 201 | { |
| 202 | struct raw_config_request rq; |
| 203 | int fd; |
| 204 | |
| 205 | if (major(dev) != RAW_MAJOR) |
Jens Axboe | 8cc7afa | 2007-04-17 09:06:43 +0200 | [diff] [blame] | 206 | return 1; |
Jens Axboe | 07e5b26 | 2007-04-02 14:46:07 +0200 | [diff] [blame] | 207 | |
| 208 | /* |
| 209 | * we should be able to find /dev/rawctl or /dev/raw/rawctl |
| 210 | */ |
| 211 | fd = open("/dev/rawctl", O_RDONLY); |
| 212 | if (fd < 0) { |
| 213 | fd = open("/dev/raw/rawctl", O_RDONLY); |
| 214 | if (fd < 0) |
Jens Axboe | 8cc7afa | 2007-04-17 09:06:43 +0200 | [diff] [blame] | 215 | return 1; |
Jens Axboe | 07e5b26 | 2007-04-02 14:46:07 +0200 | [diff] [blame] | 216 | } |
| 217 | |
| 218 | rq.raw_minor = minor(dev); |
| 219 | if (ioctl(fd, RAW_GETBIND, &rq) < 0) { |
| 220 | close(fd); |
Jens Axboe | 8cc7afa | 2007-04-17 09:06:43 +0200 | [diff] [blame] | 221 | return 1; |
Jens Axboe | 07e5b26 | 2007-04-02 14:46:07 +0200 | [diff] [blame] | 222 | } |
| 223 | |
| 224 | close(fd); |
| 225 | *majdev = rq.block_major; |
| 226 | *mindev = rq.block_minor; |
Jens Axboe | 8cc7afa | 2007-04-17 09:06:43 +0200 | [diff] [blame] | 227 | return 0; |
Jens Axboe | 07e5b26 | 2007-04-02 14:46:07 +0200 | [diff] [blame] | 228 | } |
| 229 | |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 230 | #endif |