4 #define FIO_OS os_linux
8 #include <sys/syscall.h>
15 #include <linux/unistd.h>
16 #include <linux/raw.h>
17 #include <linux/major.h>
23 #define FIO_HAVE_CPU_AFFINITY
24 #define FIO_HAVE_DISK_UTIL
26 #define FIO_HAVE_IOPRIO
27 #define FIO_HAVE_IOSCHED_SWITCH
28 #define FIO_HAVE_ODIRECT
29 #define FIO_HAVE_HUGETLB
30 #define FIO_HAVE_RAWBIND
31 #define FIO_HAVE_BLKTRACE
32 #define FIO_HAVE_PSHARED_MUTEX
33 #define FIO_HAVE_CL_SIZE
34 #define FIO_HAVE_CGROUPS
35 #define FIO_HAVE_FS_STAT
37 #define FIO_HAVE_BINJECT
38 #define FIO_HAVE_GETTID
39 #define FIO_USE_GENERIC_INIT_RANDOM_STATE
42 #define FIO_HAVE_MMAP_HUGE
45 #define OS_MAP_ANON MAP_ANONYMOUS
47 typedef cpu_set_t os_cpu_mask_t;
49 typedef struct drand48_data os_random_state_t;
51 #ifdef CONFIG_3ARG_AFFINITY
52 #define fio_setaffinity(pid, cpumask) \
53 sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
54 #define fio_getaffinity(pid, ptr) \
55 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
56 #elif defined(CONFIG_2ARG_AFFINITY)
57 #define fio_setaffinity(pid, cpumask) \
58 sched_setaffinity((pid), &(cpumask))
59 #define fio_getaffinity(pid, ptr) \
60 sched_getaffinity((pid), (ptr))
63 #define fio_cpu_clear(mask, cpu) (void) CPU_CLR((cpu), (mask))
64 #define fio_cpu_set(mask, cpu) (void) CPU_SET((cpu), (mask))
65 #define fio_cpu_isset(mask, cpu) CPU_ISSET((cpu), (mask))
66 #define fio_cpu_count(mask) CPU_COUNT((mask))
68 static inline int fio_cpuset_init(os_cpu_mask_t *mask)
74 static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
79 #define FIO_MAX_CPUS CPU_SETSIZE
89 IOPRIO_WHO_PROCESS = 1,
94 #define IOPRIO_BITS 16
95 #define IOPRIO_CLASS_SHIFT 13
97 static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
100 * If no class is set, assume BE
103 ioprio_class = IOPRIO_CLASS_BE;
105 ioprio |= ioprio_class << IOPRIO_CLASS_SHIFT;
106 return syscall(__NR_ioprio_set, which, who, ioprio);
109 static inline int gettid(void)
111 return syscall(__NR_gettid);
114 #define SPLICE_DEF_SIZE (64*1024)
117 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
121 #define BLKFLSBUF _IO(0x12,97)
125 #define BLKDISCARD _IO(0x12,119)
128 static inline int blockdev_invalidate_cache(struct fio_file *f)
130 return ioctl(f->fd, BLKFLSBUF);
133 static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes)
135 if (!ioctl(f->fd, BLKGETSIZE64, bytes))
141 static inline unsigned long long os_phys_mem(void)
143 long pagesize, pages;
145 pagesize = sysconf(_SC_PAGESIZE);
146 pages = sysconf(_SC_PHYS_PAGES);
147 if (pages == -1 || pagesize == -1)
150 return (unsigned long long) pages * (unsigned long long) pagesize;
153 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
158 static inline long os_random_long(os_random_state_t *rs)
166 static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
168 struct raw_config_request rq;
171 if (major(dev) != RAW_MAJOR)
175 * we should be able to find /dev/rawctl or /dev/raw/rawctl
177 fd = open("/dev/rawctl", O_RDONLY);
179 fd = open("/dev/raw/rawctl", O_RDONLY);
184 rq.raw_minor = minor(dev);
185 if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
191 *majdev = rq.block_major;
192 *mindev = rq.block_minor;
197 #define FIO_O_NOATIME O_NOATIME
199 #define FIO_O_NOATIME 0
203 #define OS_O_ATOMIC O_ATOMIC
205 #define OS_O_ATOMIC 040000000
209 #define FIO_MADV_FREE MADV_REMOVE
212 #if defined(__builtin_bswap16)
213 #define fio_swap16(x) __builtin_bswap16(x)
215 #define fio_swap16(x) __bswap_16(x)
217 #if defined(__builtin_bswap32)
218 #define fio_swap32(x) __builtin_bswap32(x)
220 #define fio_swap32(x) __bswap_32(x)
222 #if defined(__builtin_bswap64)
223 #define fio_swap64(x) __builtin_bswap64(x)
225 #define fio_swap64(x) __bswap_64(x)
228 #define CACHE_LINE_FILE \
229 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
231 static inline int arch_cache_line_size(void)
236 fd = open(CACHE_LINE_FILE, O_RDONLY);
240 ret = read(fd, size, sizeof(size));
250 static inline unsigned long long get_fs_free_size(const char *path)
252 unsigned long long ret;
255 if (statfs(path, &s) < 0)
259 ret *= (unsigned long long) s.f_bfree;
263 static inline int os_trim(int fd, unsigned long long start,
264 unsigned long long len)
271 if (!ioctl(fd, BLKDISCARD, range))
277 #ifdef CONFIG_SCHED_IDLE
278 static inline int fio_set_sched_idle(void)
280 struct sched_param p = { .sched_priority = 0, };
281 return sched_setscheduler(gettid(), SCHED_IDLE, &p);
285 #ifndef POSIX_FADV_STREAMID
286 #define POSIX_FADV_STREAMID 8
289 #define FIO_HAVE_STREAMID