6 #include <sys/syscall.h>
10 #include <linux/unistd.h>
11 #include <linux/raw.h>
12 #include <linux/major.h>
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
22 #define FIO_HAVE_IOPRIO
23 #define FIO_HAVE_SPLICE
24 #define FIO_HAVE_IOSCHED_SWITCH
25 #define FIO_HAVE_ODIRECT
26 #define FIO_HAVE_HUGETLB
27 #define FIO_HAVE_RAWBIND
28 #define FIO_HAVE_BLKTRACE
29 #define FIO_HAVE_STRSEP
30 #define FIO_HAVE_FALLOCATE
31 #define FIO_HAVE_POSIXAIO_FSYNC
32 #define FIO_HAVE_PSHARED_MUTEX
33 #define FIO_HAVE_CL_SIZE
35 #define OS_MAP_ANON MAP_ANONYMOUS
37 #ifndef CLOCK_MONOTONIC
38 #define CLOCK_MONOTONIC 1
41 typedef cpu_set_t os_cpu_mask_t;
43 typedef struct drand48_data os_random_state_t;
46 * we want fadvise64 really, but it's so tangled... later
48 #ifdef FIO_HAVE_FADVISE
49 #define fadvise(fd, off, len, advice) \
50 posix_fadvise((fd), (off_t)(off), (len), (advice))
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.
58 #define fio_setaffinity(pid, cpumask) \
59 sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
60 #define fio_getaffinity(pid, ptr) \
61 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
63 #define fio_setaffinity(pid, cpumask) \
64 sched_setaffinity((pid), &(cpumask))
65 #define fio_getaffinity(pid, ptr) \
66 sched_getaffinity((pid), (ptr))
69 #define fio_cpu_clear(mask, cpu) CPU_CLR((cpu), (mask))
70 #define fio_cpu_set(mask, cpu) CPU_SET((cpu), (mask))
72 static inline int fio_cpuset_init(os_cpu_mask_t *mask)
78 static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
83 #define FIO_MAX_CPUS CPU_SETSIZE
85 static inline int ioprio_set(int which, int who, int ioprio)
87 return syscall(__NR_ioprio_set, which, who, ioprio);
91 * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
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 */
102 static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
103 size_t len, unsigned int flags)
105 return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
108 static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
110 return syscall(__NR_sys_tee, fdin, fdout, len, flags);
113 static inline int vmsplice(int fd, const struct iovec *iov,
114 unsigned long nr_segs, unsigned int flags)
116 return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
120 #define SPLICE_DEF_SIZE (64*1024)
122 #ifdef FIO_HAVE_SYSLET
125 struct async_head_user;
130 static inline struct syslet_uatom *
131 async_exec(struct syslet_uatom *atom, struct async_head_user *ahu)
133 return (struct syslet_uatom *) syscall(__NR_async_exec, atom, ahu);
137 async_wait(unsigned long min_wait_events, unsigned long user_ring_idx,
138 struct async_head_user *ahu)
140 return syscall(__NR_async_wait, min_wait_events,
144 static inline long async_thread(void *event, struct async_head_user *ahu)
146 return syscall(__NR_async_thread, event, ahu);
149 static inline long umem_add(unsigned long *uptr, unsigned long inc)
151 return syscall(__NR_umem_add, uptr, inc);
153 #endif /* FIO_HAVE_SYSLET */
163 IOPRIO_WHO_PROCESS = 1,
168 #define IOPRIO_BITS 16
169 #define IOPRIO_CLASS_SHIFT 13
172 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
176 #define BLKFLSBUF _IO(0x12,97)
179 static inline int blockdev_invalidate_cache(int fd)
181 return ioctl(fd, BLKFLSBUF);
184 static inline int blockdev_size(int fd, unsigned long long *bytes)
186 if (!ioctl(fd, BLKGETSIZE64, bytes))
192 static inline unsigned long long os_phys_mem(void)
194 long pagesize, pages;
196 pagesize = sysconf(_SC_PAGESIZE);
197 pages = sysconf(_SC_PHYS_PAGES);
198 if (pages == -1 || pagesize == -1)
201 return (unsigned long long) pages * (unsigned long long) pagesize;
204 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
209 static inline long os_random_long(os_random_state_t *rs)
217 static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
219 struct raw_config_request rq;
222 if (major(dev) != RAW_MAJOR)
226 * we should be able to find /dev/rawctl or /dev/raw/rawctl
228 fd = open("/dev/rawctl", O_RDONLY);
230 fd = open("/dev/raw/rawctl", O_RDONLY);
235 rq.raw_minor = minor(dev);
236 if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
242 *majdev = rq.block_major;
243 *mindev = rq.block_minor;
248 #define FIO_O_NOATIME O_NOATIME
250 #define FIO_O_NOATIME 0
254 #define FIO_MADV_FREE MADV_REMOVE
257 #define CACHE_LINE_FILE \
258 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
260 static inline int arch_cache_line_size(void)
265 fd = open(CACHE_LINE_FILE, O_RDONLY);
269 ret = read(fd, size, sizeof(size));