6 #include <sys/syscall.h>
11 #include <linux/unistd.h>
12 #include <linux/raw.h>
13 #include <linux/major.h>
17 #define FIO_HAVE_LIBAIO
18 #define FIO_HAVE_POSIXAIO
19 #define FIO_HAVE_FADVISE
20 #define FIO_HAVE_CPU_AFFINITY
21 #define FIO_HAVE_DISK_UTIL
23 #define FIO_HAVE_IOPRIO
24 #define FIO_HAVE_SPLICE
25 #define FIO_HAVE_IOSCHED_SWITCH
26 #define FIO_HAVE_ODIRECT
27 #define FIO_HAVE_HUGETLB
28 #define FIO_HAVE_RAWBIND
29 #define FIO_HAVE_BLKTRACE
30 #define FIO_HAVE_STRSEP
31 #define FIO_HAVE_FALLOCATE
32 #define FIO_HAVE_POSIXAIO_FSYNC
33 #define FIO_HAVE_PSHARED_MUTEX
34 #define FIO_HAVE_CL_SIZE
35 #define FIO_HAVE_CGROUPS
36 #define FIO_HAVE_FDATASYNC
38 #define OS_MAP_ANON MAP_ANONYMOUS
40 #ifndef CLOCK_MONOTONIC
41 #define CLOCK_MONOTONIC 1
44 typedef cpu_set_t os_cpu_mask_t;
46 typedef struct drand48_data os_random_state_t;
49 * we want fadvise64 really, but it's so tangled... later
51 #ifdef FIO_HAVE_FADVISE
52 #define fadvise(fd, off, len, advice) \
53 posix_fadvise((fd), (off_t)(off), (len), (advice))
57 * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want
58 * the affinity helpers to work.
61 #define fio_setaffinity(pid, cpumask) \
62 sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
63 #define fio_getaffinity(pid, ptr) \
64 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
66 #define fio_setaffinity(pid, cpumask) \
67 sched_setaffinity((pid), &(cpumask))
68 #define fio_getaffinity(pid, ptr) \
69 sched_getaffinity((pid), (ptr))
72 #define fio_cpu_clear(mask, cpu) CPU_CLR((cpu), (mask))
73 #define fio_cpu_set(mask, cpu) CPU_SET((cpu), (mask))
75 static inline int fio_cpuset_init(os_cpu_mask_t *mask)
81 static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
86 #define FIO_MAX_CPUS CPU_SETSIZE
88 static inline int ioprio_set(int which, int who, int ioprio)
90 return syscall(__NR_ioprio_set, which, who, ioprio);
94 * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
98 #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */
99 #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
100 /* we may still block on the fd we splice */
101 /* from/to, of course */
102 #define SPLICE_F_MORE (0x04) /* expect more data */
103 #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */
105 static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
106 size_t len, unsigned int flags)
108 return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
111 static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
113 return syscall(__NR_sys_tee, fdin, fdout, len, flags);
116 static inline int vmsplice(int fd, const struct iovec *iov,
117 unsigned long nr_segs, unsigned int flags)
119 return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
123 #define SPLICE_DEF_SIZE (64*1024)
125 #ifdef FIO_HAVE_SYSLET
128 struct async_head_user;
133 static inline struct syslet_uatom *
134 async_exec(struct syslet_uatom *atom, struct async_head_user *ahu)
136 return (struct syslet_uatom *) syscall(__NR_async_exec, atom, ahu);
140 async_wait(unsigned long min_wait_events, unsigned long user_ring_idx,
141 struct async_head_user *ahu)
143 return syscall(__NR_async_wait, min_wait_events,
147 static inline long async_thread(void *event, struct async_head_user *ahu)
149 return syscall(__NR_async_thread, event, ahu);
152 static inline long umem_add(unsigned long *uptr, unsigned long inc)
154 return syscall(__NR_umem_add, uptr, inc);
156 #endif /* FIO_HAVE_SYSLET */
166 IOPRIO_WHO_PROCESS = 1,
171 #define IOPRIO_BITS 16
172 #define IOPRIO_CLASS_SHIFT 13
175 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
179 #define BLKFLSBUF _IO(0x12,97)
182 static inline int blockdev_invalidate_cache(int fd)
184 return ioctl(fd, BLKFLSBUF);
187 static inline int blockdev_size(int fd, unsigned long long *bytes)
189 if (!ioctl(fd, BLKGETSIZE64, bytes))
195 static inline unsigned long long os_phys_mem(void)
197 long pagesize, pages;
199 pagesize = sysconf(_SC_PAGESIZE);
200 pages = sysconf(_SC_PHYS_PAGES);
201 if (pages == -1 || pagesize == -1)
204 return (unsigned long long) pages * (unsigned long long) pagesize;
207 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
212 static inline long os_random_long(os_random_state_t *rs)
220 static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
222 struct raw_config_request rq;
225 if (major(dev) != RAW_MAJOR)
229 * we should be able to find /dev/rawctl or /dev/raw/rawctl
231 fd = open("/dev/rawctl", O_RDONLY);
233 fd = open("/dev/raw/rawctl", O_RDONLY);
238 rq.raw_minor = minor(dev);
239 if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
245 *majdev = rq.block_major;
246 *mindev = rq.block_minor;
251 #define FIO_O_NOATIME O_NOATIME
253 #define FIO_O_NOATIME 0
257 #define FIO_MADV_FREE MADV_REMOVE
260 #define CACHE_LINE_FILE \
261 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
263 static inline int arch_cache_line_size(void)
268 fd = open(CACHE_LINE_FILE, O_RDONLY);
272 ret = read(fd, size, sizeof(size));