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 | 3c2d93e | 2009-01-05 19:04:15 +0100 | [diff] [blame] | 9 | #include <errno.h> |
Jens Axboe | ea42179 | 2006-07-11 09:11:07 +0200 | [diff] [blame] | 10 | #include <linux/unistd.h> |
Jens Axboe | 07e5b26 | 2007-04-02 14:46:07 +0200 | [diff] [blame] | 11 | #include <linux/raw.h> |
| 12 | #include <linux/major.h> |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 13 | |
Jens Axboe | f3de88a | 2008-02-24 21:36:00 +0100 | [diff] [blame] | 14 | #include "indirect.h" |
| 15 | |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 16 | #define FIO_HAVE_LIBAIO |
| 17 | #define FIO_HAVE_POSIXAIO |
| 18 | #define FIO_HAVE_FADVISE |
| 19 | #define FIO_HAVE_CPU_AFFINITY |
| 20 | #define FIO_HAVE_DISK_UTIL |
| 21 | #define FIO_HAVE_SGIO |
Jens Axboe | ba4f892 | 2006-01-26 13:45:54 -0800 | [diff] [blame] | 22 | #define FIO_HAVE_IOPRIO |
Jens Axboe | 8756e4d | 2006-05-27 20:24:53 +0200 | [diff] [blame] | 23 | #define FIO_HAVE_SPLICE |
Jens Axboe | 22f78b3 | 2006-06-07 11:30:07 +0200 | [diff] [blame] | 24 | #define FIO_HAVE_IOSCHED_SWITCH |
Jens Axboe | 2c0ecd2 | 2006-06-08 13:25:41 +0200 | [diff] [blame] | 25 | #define FIO_HAVE_ODIRECT |
Jens Axboe | 74b025b | 2006-12-19 15:18:14 +0100 | [diff] [blame] | 26 | #define FIO_HAVE_HUGETLB |
Jens Axboe | 07e5b26 | 2007-04-02 14:46:07 +0200 | [diff] [blame] | 27 | #define FIO_HAVE_RAWBIND |
Jens Axboe | 5e62c22 | 2007-05-22 13:27:30 +0200 | [diff] [blame] | 28 | #define FIO_HAVE_BLKTRACE |
Jens Axboe | 5921e80 | 2008-05-30 15:02:38 +0200 | [diff] [blame] | 29 | #define FIO_HAVE_STRSEP |
Jens Axboe | fffca02 | 2008-06-02 12:23:40 +0200 | [diff] [blame] | 30 | #define FIO_HAVE_FALLOCATE |
Jens Axboe | 207cb0f | 2008-06-02 12:28:02 +0200 | [diff] [blame] | 31 | #define FIO_HAVE_POSIXAIO_FSYNC |
Jens Axboe | f356d01 | 2009-01-05 09:56:29 +0100 | [diff] [blame] | 32 | #define FIO_HAVE_PSHARED_MUTEX |
Jens Axboe | eb7ccf3 | 2009-04-29 09:48:04 +0200 | [diff] [blame] | 33 | #define FIO_HAVE_CL_SIZE |
Jens Axboe | b6959b5 | 2007-02-14 21:40:27 +0000 | [diff] [blame] | 34 | |
Jens Axboe | dc873b6 | 2008-06-04 20:13:04 +0200 | [diff] [blame] | 35 | #define OS_MAP_ANON MAP_ANONYMOUS |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 36 | |
Shawn Lewis | 4d8947d | 2007-07-25 07:51:58 +0200 | [diff] [blame] | 37 | #ifndef CLOCK_MONOTONIC |
| 38 | #define CLOCK_MONOTONIC 1 |
| 39 | #endif |
| 40 | |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 41 | typedef cpu_set_t os_cpu_mask_t; |
Jens Axboe | 4e78e40 | 2008-12-12 20:40:27 +0100 | [diff] [blame] | 42 | |
Jens Axboe | 6dfd46b | 2006-06-07 13:57:06 +0200 | [diff] [blame] | 43 | typedef struct drand48_data os_random_state_t; |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 44 | |
| 45 | /* |
| 46 | * we want fadvise64 really, but it's so tangled... later |
| 47 | */ |
Shawn Lewis | 4d8947d | 2007-07-25 07:51:58 +0200 | [diff] [blame] | 48 | #ifdef FIO_HAVE_FADVISE |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 49 | #define fadvise(fd, off, len, advice) \ |
| 50 | posix_fadvise((fd), (off_t)(off), (len), (advice)) |
Shawn Lewis | 4d8947d | 2007-07-25 07:51:58 +0200 | [diff] [blame] | 51 | #endif |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 52 | |
Jens Axboe | c8f025f | 2007-05-22 17:06:24 +0200 | [diff] [blame] | 53 | /* |
| 54 | * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want |
| 55 | * the affinity helpers to work. |
| 56 | */ |
| 57 | #ifndef GLIBC_2_3_2 |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 58 | #define fio_setaffinity(td) \ |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 59 | sched_setaffinity((td)->pid, sizeof((td)->o.cpumask), &(td)->o.cpumask) |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 60 | #define fio_getaffinity(pid, ptr) \ |
| 61 | sched_getaffinity((pid), sizeof(cpu_set_t), (ptr)) |
Jens Axboe | c8f025f | 2007-05-22 17:06:24 +0200 | [diff] [blame] | 62 | #else |
| 63 | #define fio_setaffinity(td) \ |
| 64 | sched_setaffinity((td)->pid, &(td)->o.cpumask) |
| 65 | #define fio_getaffinity(pid, ptr) \ |
| 66 | sched_getaffinity((pid), (ptr)) |
| 67 | #endif |
Jens Axboe | be4ecfd | 2008-12-08 14:10:52 +0100 | [diff] [blame] | 68 | |
| 69 | #define fio_cpu_clear(mask, cpu) CPU_CLR((cpu), (mask)) |
Jens Axboe | 6d459ee | 2008-12-12 20:02:58 +0100 | [diff] [blame] | 70 | #define fio_cpu_set(mask, cpu) CPU_SET((cpu), (mask)) |
Jens Axboe | d2ce18b | 2008-12-12 20:51:40 +0100 | [diff] [blame] | 71 | |
| 72 | static inline int fio_cpuset_init(os_cpu_mask_t *mask) |
| 73 | { |
| 74 | CPU_ZERO(mask); |
| 75 | return 0; |
| 76 | } |
| 77 | |
| 78 | static inline int fio_cpuset_exit(os_cpu_mask_t *mask) |
| 79 | { |
| 80 | return 0; |
| 81 | } |
Jens Axboe | 6d459ee | 2008-12-12 20:02:58 +0100 | [diff] [blame] | 82 | |
| 83 | #define FIO_MAX_CPUS CPU_SETSIZE |
Shawn Lewis | 4d8947d | 2007-07-25 07:51:58 +0200 | [diff] [blame] | 84 | |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 85 | static inline int ioprio_set(int which, int who, int ioprio) |
| 86 | { |
| 87 | return syscall(__NR_ioprio_set, which, who, ioprio); |
| 88 | } |
| 89 | |
Jens Axboe | 97fbdfa | 2006-10-05 13:44:15 +0200 | [diff] [blame] | 90 | /* |
| 91 | * Just check for SPLICE_F_MOVE, if that isn't there, assume the others |
| 92 | * aren't either. |
| 93 | */ |
| 94 | #ifndef SPLICE_F_MOVE |
Jens Axboe | 8756e4d | 2006-05-27 20:24:53 +0200 | [diff] [blame] | 95 | #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */ |
| 96 | #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */ |
| 97 | /* we may still block on the fd we splice */ |
| 98 | /* from/to, of course */ |
| 99 | #define SPLICE_F_MORE (0x04) /* expect more data */ |
| 100 | #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */ |
| 101 | |
Jens Axboe | 97fbdfa | 2006-10-05 13:44:15 +0200 | [diff] [blame] | 102 | 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] | 103 | size_t len, unsigned int flags) |
Jens Axboe | 97fbdfa | 2006-10-05 13:44:15 +0200 | [diff] [blame] | 104 | { |
| 105 | return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags); |
| 106 | } |
| 107 | |
| 108 | static inline int tee(int fdin, int fdout, size_t len, unsigned int flags) |
| 109 | { |
| 110 | return syscall(__NR_sys_tee, fdin, fdout, len, flags); |
| 111 | } |
| 112 | |
| 113 | static inline int vmsplice(int fd, const struct iovec *iov, |
| 114 | unsigned long nr_segs, unsigned int flags) |
| 115 | { |
| 116 | return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags); |
| 117 | } |
| 118 | #endif |
| 119 | |
Jens Axboe | 3feedc6 | 2006-05-28 20:13:51 +0200 | [diff] [blame] | 120 | #define SPLICE_DEF_SIZE (64*1024) |
| 121 | |
Jens Axboe | b6959b5 | 2007-02-14 21:40:27 +0000 | [diff] [blame] | 122 | #ifdef FIO_HAVE_SYSLET |
Ingo Molnar | bf0dc8f | 2007-02-21 23:25:44 +0100 | [diff] [blame] | 123 | |
| 124 | struct syslet_uatom; |
| 125 | struct async_head_user; |
| 126 | |
Jens Axboe | a4f4fdd | 2007-02-14 01:16:39 +0100 | [diff] [blame] | 127 | /* |
| 128 | * syslet stuff |
| 129 | */ |
Ingo Molnar | bf0dc8f | 2007-02-21 23:25:44 +0100 | [diff] [blame] | 130 | static inline struct syslet_uatom * |
| 131 | async_exec(struct syslet_uatom *atom, struct async_head_user *ahu) |
Jens Axboe | a4f4fdd | 2007-02-14 01:16:39 +0100 | [diff] [blame] | 132 | { |
Daniel Rall | 2b52511 | 2008-09-10 08:56:01 +0200 | [diff] [blame] | 133 | return (struct syslet_uatom *) syscall(__NR_async_exec, atom, ahu); |
Jens Axboe | a4f4fdd | 2007-02-14 01:16:39 +0100 | [diff] [blame] | 134 | } |
| 135 | |
Ingo Molnar | bf0dc8f | 2007-02-21 23:25:44 +0100 | [diff] [blame] | 136 | static inline long |
| 137 | async_wait(unsigned long min_wait_events, unsigned long user_ring_idx, |
| 138 | struct async_head_user *ahu) |
Jens Axboe | a4f4fdd | 2007-02-14 01:16:39 +0100 | [diff] [blame] | 139 | { |
Ingo Molnar | bf0dc8f | 2007-02-21 23:25:44 +0100 | [diff] [blame] | 140 | return syscall(__NR_async_wait, min_wait_events, |
| 141 | user_ring_idx, ahu); |
Jens Axboe | a4f4fdd | 2007-02-14 01:16:39 +0100 | [diff] [blame] | 142 | } |
| 143 | |
Jens Axboe | 7756b0d | 2007-02-26 10:22:31 +0100 | [diff] [blame] | 144 | static inline long async_thread(void *event, struct async_head_user *ahu) |
Jens Axboe | a4f4fdd | 2007-02-14 01:16:39 +0100 | [diff] [blame] | 145 | { |
Jens Axboe | 7756b0d | 2007-02-26 10:22:31 +0100 | [diff] [blame] | 146 | return syscall(__NR_async_thread, event, ahu); |
Jens Axboe | a4f4fdd | 2007-02-14 01:16:39 +0100 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | static inline long umem_add(unsigned long *uptr, unsigned long inc) |
| 150 | { |
| 151 | return syscall(__NR_umem_add, uptr, inc); |
| 152 | } |
Jens Axboe | b6959b5 | 2007-02-14 21:40:27 +0000 | [diff] [blame] | 153 | #endif /* FIO_HAVE_SYSLET */ |
Jens Axboe | a4f4fdd | 2007-02-14 01:16:39 +0100 | [diff] [blame] | 154 | |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 155 | enum { |
Jens Axboe | 6cefbe3 | 2007-04-18 12:46:56 +0200 | [diff] [blame] | 156 | IOPRIO_CLASS_NONE, |
| 157 | IOPRIO_CLASS_RT, |
| 158 | IOPRIO_CLASS_BE, |
| 159 | IOPRIO_CLASS_IDLE, |
| 160 | }; |
| 161 | |
| 162 | enum { |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 163 | IOPRIO_WHO_PROCESS = 1, |
| 164 | IOPRIO_WHO_PGRP, |
| 165 | IOPRIO_WHO_USER, |
| 166 | }; |
| 167 | |
Jens Axboe | 6cefbe3 | 2007-04-18 12:46:56 +0200 | [diff] [blame] | 168 | #define IOPRIO_BITS 16 |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 169 | #define IOPRIO_CLASS_SHIFT 13 |
| 170 | |
| 171 | #ifndef BLKGETSIZE64 |
| 172 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) |
| 173 | #endif |
| 174 | |
Jens Axboe | e5b401d | 2006-10-18 16:03:40 +0200 | [diff] [blame] | 175 | #ifndef BLKFLSBUF |
| 176 | #define BLKFLSBUF _IO(0x12,97) |
| 177 | #endif |
| 178 | |
| 179 | static inline int blockdev_invalidate_cache(int fd) |
| 180 | { |
Jens Axboe | a16211b | 2007-03-15 11:35:33 +0100 | [diff] [blame] | 181 | return ioctl(fd, BLKFLSBUF); |
Jens Axboe | e5b401d | 2006-10-18 16:03:40 +0200 | [diff] [blame] | 182 | } |
| 183 | |
Jens Axboe | 9104f87 | 2005-12-28 23:50:45 +0100 | [diff] [blame] | 184 | static inline int blockdev_size(int fd, unsigned long long *bytes) |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 185 | { |
| 186 | if (!ioctl(fd, BLKGETSIZE64, bytes)) |
| 187 | return 0; |
| 188 | |
| 189 | return errno; |
| 190 | } |
| 191 | |
Jens Axboe | 32cd46a | 2006-06-07 13:40:40 +0200 | [diff] [blame] | 192 | static inline unsigned long long os_phys_mem(void) |
| 193 | { |
| 194 | long pagesize, pages; |
| 195 | |
| 196 | pagesize = sysconf(_SC_PAGESIZE); |
| 197 | pages = sysconf(_SC_PHYS_PAGES); |
| 198 | if (pages == -1 || pagesize == -1) |
| 199 | return 0; |
| 200 | |
| 201 | return (unsigned long long) pages * (unsigned long long) pagesize; |
| 202 | } |
| 203 | |
Jens Axboe | 6dfd46b | 2006-06-07 13:57:06 +0200 | [diff] [blame] | 204 | static inline void os_random_seed(unsigned long seed, os_random_state_t *rs) |
| 205 | { |
| 206 | srand48_r(seed, rs); |
| 207 | } |
| 208 | |
| 209 | static inline long os_random_long(os_random_state_t *rs) |
| 210 | { |
| 211 | long val; |
| 212 | |
| 213 | lrand48_r(rs, &val); |
| 214 | return val; |
| 215 | } |
| 216 | |
Jens Axboe | 8cc7afa | 2007-04-17 09:06:43 +0200 | [diff] [blame] | 217 | 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] | 218 | { |
| 219 | struct raw_config_request rq; |
| 220 | int fd; |
| 221 | |
| 222 | if (major(dev) != RAW_MAJOR) |
Jens Axboe | 8cc7afa | 2007-04-17 09:06:43 +0200 | [diff] [blame] | 223 | return 1; |
Jens Axboe | 07e5b26 | 2007-04-02 14:46:07 +0200 | [diff] [blame] | 224 | |
| 225 | /* |
| 226 | * we should be able to find /dev/rawctl or /dev/raw/rawctl |
| 227 | */ |
| 228 | fd = open("/dev/rawctl", O_RDONLY); |
| 229 | if (fd < 0) { |
| 230 | fd = open("/dev/raw/rawctl", O_RDONLY); |
| 231 | if (fd < 0) |
Jens Axboe | 8cc7afa | 2007-04-17 09:06:43 +0200 | [diff] [blame] | 232 | return 1; |
Jens Axboe | 07e5b26 | 2007-04-02 14:46:07 +0200 | [diff] [blame] | 233 | } |
| 234 | |
| 235 | rq.raw_minor = minor(dev); |
| 236 | if (ioctl(fd, RAW_GETBIND, &rq) < 0) { |
| 237 | close(fd); |
Jens Axboe | 8cc7afa | 2007-04-17 09:06:43 +0200 | [diff] [blame] | 238 | return 1; |
Jens Axboe | 07e5b26 | 2007-04-02 14:46:07 +0200 | [diff] [blame] | 239 | } |
| 240 | |
| 241 | close(fd); |
| 242 | *majdev = rq.block_major; |
| 243 | *mindev = rq.block_minor; |
Jens Axboe | 8cc7afa | 2007-04-17 09:06:43 +0200 | [diff] [blame] | 244 | return 0; |
Jens Axboe | 07e5b26 | 2007-04-02 14:46:07 +0200 | [diff] [blame] | 245 | } |
| 246 | |
Jens Axboe | 5b6f5c6 | 2008-06-11 10:21:43 +0200 | [diff] [blame] | 247 | #ifdef O_NOATIME |
Jens Axboe | 5921e80 | 2008-05-30 15:02:38 +0200 | [diff] [blame] | 248 | #define FIO_O_NOATIME O_NOATIME |
Jens Axboe | 5b6f5c6 | 2008-06-11 10:21:43 +0200 | [diff] [blame] | 249 | #else |
| 250 | #define FIO_O_NOATIME 0 |
| 251 | #endif |
Jens Axboe | 5921e80 | 2008-05-30 15:02:38 +0200 | [diff] [blame] | 252 | |
Jens Axboe | eb7ccf3 | 2009-04-29 09:48:04 +0200 | [diff] [blame] | 253 | #define CACHE_LINE_FILE \ |
| 254 | "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size" |
| 255 | |
| 256 | static inline int arch_cache_line_size(void) |
| 257 | { |
| 258 | char size[32]; |
| 259 | int fd, ret; |
| 260 | |
| 261 | fd = open(CACHE_LINE_FILE, O_RDONLY); |
| 262 | if (fd < 0) |
| 263 | return -1; |
| 264 | |
| 265 | ret = read(fd, size, sizeof(size)); |
Jens Axboe | ec76f15 | 2009-06-09 13:05:32 +0200 | [diff] [blame^] | 266 | |
| 267 | close(fd); |
| 268 | |
Jens Axboe | eb7ccf3 | 2009-04-29 09:48:04 +0200 | [diff] [blame] | 269 | if (ret <= 0) |
| 270 | return -1; |
Jens Axboe | ec76f15 | 2009-06-09 13:05:32 +0200 | [diff] [blame^] | 271 | else |
| 272 | return atoi(size); |
Jens Axboe | eb7ccf3 | 2009-04-29 09:48:04 +0200 | [diff] [blame] | 273 | } |
| 274 | |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 275 | #endif |