4 #define FIO_OS os_linux
8 #include <sys/syscall.h>
9 #include <sys/sysmacros.h>
16 #include <linux/unistd.h>
17 #include <linux/raw.h>
18 #include <linux/major.h>
24 #define FIO_HAVE_CPU_AFFINITY
25 #define FIO_HAVE_DISK_UTIL
27 #define FIO_HAVE_IOPRIO
28 #define FIO_HAVE_IOSCHED_SWITCH
29 #define FIO_HAVE_ODIRECT
30 #define FIO_HAVE_HUGETLB
31 #define FIO_HAVE_RAWBIND
32 #define FIO_HAVE_BLKTRACE
33 #define FIO_HAVE_PSHARED_MUTEX
34 #define FIO_HAVE_CL_SIZE
35 #define FIO_HAVE_CGROUPS
36 #define FIO_HAVE_FS_STAT
38 #define FIO_HAVE_BINJECT
39 #define FIO_HAVE_GETTID
40 #define FIO_USE_GENERIC_INIT_RANDOM_STATE
43 #define FIO_HAVE_MMAP_HUGE
46 #define OS_MAP_ANON MAP_ANONYMOUS
48 typedef cpu_set_t os_cpu_mask_t;
50 typedef struct drand48_data os_random_state_t;
52 #ifdef CONFIG_3ARG_AFFINITY
53 #define fio_setaffinity(pid, cpumask) \
54 sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
55 #define fio_getaffinity(pid, ptr) \
56 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
57 #elif defined(CONFIG_2ARG_AFFINITY)
58 #define fio_setaffinity(pid, cpumask) \
59 sched_setaffinity((pid), &(cpumask))
60 #define fio_getaffinity(pid, ptr) \
61 sched_getaffinity((pid), (ptr))
64 #define fio_cpu_clear(mask, cpu) (void) CPU_CLR((cpu), (mask))
65 #define fio_cpu_set(mask, cpu) (void) CPU_SET((cpu), (mask))
66 #define fio_cpu_isset(mask, cpu) CPU_ISSET((cpu), (mask))
67 #define fio_cpu_count(mask) CPU_COUNT((mask))
69 static inline int fio_cpuset_init(os_cpu_mask_t *mask)
75 static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
80 #define FIO_MAX_CPUS CPU_SETSIZE
90 IOPRIO_WHO_PROCESS = 1,
95 #define IOPRIO_BITS 16
96 #define IOPRIO_CLASS_SHIFT 13
98 static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
101 * If no class is set, assume BE
104 ioprio_class = IOPRIO_CLASS_BE;
106 ioprio |= ioprio_class << IOPRIO_CLASS_SHIFT;
107 return syscall(__NR_ioprio_set, which, who, ioprio);
110 static inline int gettid(void)
112 return syscall(__NR_gettid);
115 #define SPLICE_DEF_SIZE (64*1024)
118 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
122 #define BLKFLSBUF _IO(0x12,97)
126 #define BLKDISCARD _IO(0x12,119)
129 static inline int blockdev_invalidate_cache(struct fio_file *f)
131 return ioctl(f->fd, BLKFLSBUF);
134 static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
136 if (!ioctl(f->fd, BLKGETSIZE64, bytes))
142 static inline unsigned long long os_phys_mem(void)
144 long pagesize, pages;
146 pagesize = sysconf(_SC_PAGESIZE);
147 pages = sysconf(_SC_PHYS_PAGES);
148 if (pages == -1 || pagesize == -1)
151 return (unsigned long long) pages * (unsigned long long) pagesize;
154 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
159 static inline long os_random_long(os_random_state_t *rs)
167 static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
169 struct raw_config_request rq;
172 if (major(dev) != RAW_MAJOR)
176 * we should be able to find /dev/rawctl or /dev/raw/rawctl
178 fd = open("/dev/rawctl", O_RDONLY);
180 fd = open("/dev/raw/rawctl", O_RDONLY);
185 rq.raw_minor = minor(dev);
186 if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
192 *majdev = rq.block_major;
193 *mindev = rq.block_minor;
198 #define FIO_O_NOATIME O_NOATIME
200 #define FIO_O_NOATIME 0
204 #define OS_O_ATOMIC O_ATOMIC
206 #define OS_O_ATOMIC 040000000
210 #define FIO_MADV_FREE MADV_REMOVE
213 #if defined(__builtin_bswap16)
214 #define fio_swap16(x) __builtin_bswap16(x)
216 #define fio_swap16(x) __bswap_16(x)
218 #if defined(__builtin_bswap32)
219 #define fio_swap32(x) __builtin_bswap32(x)
221 #define fio_swap32(x) __bswap_32(x)
223 #if defined(__builtin_bswap64)
224 #define fio_swap64(x) __builtin_bswap64(x)
226 #define fio_swap64(x) __bswap_64(x)
229 #define CACHE_LINE_FILE \
230 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
232 static inline int arch_cache_line_size(void)
237 fd = open(CACHE_LINE_FILE, O_RDONLY);
241 ret = read(fd, size, sizeof(size));
251 static inline unsigned long long get_fs_free_size(const char *path)
253 unsigned long long ret;
256 if (statfs(path, &s) < 0)
260 ret *= (unsigned long long) s.f_bfree;
264 static inline int os_trim(int fd, unsigned long long start,
265 unsigned long long len)
272 if (!ioctl(fd, BLKDISCARD, range))
278 #ifdef CONFIG_SCHED_IDLE
279 static inline int fio_set_sched_idle(void)
281 struct sched_param p = { .sched_priority = 0, };
282 return sched_setscheduler(gettid(), SCHED_IDLE, &p);
286 #ifndef POSIX_FADV_STREAMID
287 #define POSIX_FADV_STREAMID 8
290 #define FIO_HAVE_STREAMID