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
37 #define OS_MAP_ANON MAP_ANONYMOUS
39 #ifndef CLOCK_MONOTONIC
40 #define CLOCK_MONOTONIC 1
43 typedef cpu_set_t os_cpu_mask_t;
45 typedef struct drand48_data os_random_state_t;
48 * we want fadvise64 really, but it's so tangled... later
50 #ifdef FIO_HAVE_FADVISE
51 #define fadvise(fd, off, len, advice) \
52 posix_fadvise((fd), (off_t)(off), (len), (advice))
56 * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want
57 * the affinity helpers to work.
60 #define fio_setaffinity(pid, cpumask) \
61 sched_setaffinity((pid), sizeof(cpumask), &(cpumask))
62 #define fio_getaffinity(pid, ptr) \
63 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
65 #define fio_setaffinity(pid, cpumask) \
66 sched_setaffinity((pid), &(cpumask))
67 #define fio_getaffinity(pid, ptr) \
68 sched_getaffinity((pid), (ptr))
71 #define fio_cpu_clear(mask, cpu) CPU_CLR((cpu), (mask))
72 #define fio_cpu_set(mask, cpu) CPU_SET((cpu), (mask))
74 static inline int fio_cpuset_init(os_cpu_mask_t *mask)
80 static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
85 #define FIO_MAX_CPUS CPU_SETSIZE
87 static inline int ioprio_set(int which, int who, int ioprio)
89 return syscall(__NR_ioprio_set, which, who, ioprio);
93 * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
97 #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */
98 #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
99 /* we may still block on the fd we splice */
100 /* from/to, of course */
101 #define SPLICE_F_MORE (0x04) /* expect more data */
102 #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */
104 static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
105 size_t len, unsigned int flags)
107 return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
110 static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
112 return syscall(__NR_sys_tee, fdin, fdout, len, flags);
115 static inline int vmsplice(int fd, const struct iovec *iov,
116 unsigned long nr_segs, unsigned int flags)
118 return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
122 #define SPLICE_DEF_SIZE (64*1024)
124 #ifdef FIO_HAVE_SYSLET
127 struct async_head_user;
132 static inline struct syslet_uatom *
133 async_exec(struct syslet_uatom *atom, struct async_head_user *ahu)
135 return (struct syslet_uatom *) syscall(__NR_async_exec, atom, ahu);
139 async_wait(unsigned long min_wait_events, unsigned long user_ring_idx,
140 struct async_head_user *ahu)
142 return syscall(__NR_async_wait, min_wait_events,
146 static inline long async_thread(void *event, struct async_head_user *ahu)
148 return syscall(__NR_async_thread, event, ahu);
151 static inline long umem_add(unsigned long *uptr, unsigned long inc)
153 return syscall(__NR_umem_add, uptr, inc);
155 #endif /* FIO_HAVE_SYSLET */
165 IOPRIO_WHO_PROCESS = 1,
170 #define IOPRIO_BITS 16
171 #define IOPRIO_CLASS_SHIFT 13
174 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
178 #define BLKFLSBUF _IO(0x12,97)
181 static inline int blockdev_invalidate_cache(int fd)
183 return ioctl(fd, BLKFLSBUF);
186 static inline int blockdev_size(int fd, unsigned long long *bytes)
188 if (!ioctl(fd, BLKGETSIZE64, bytes))
194 static inline unsigned long long os_phys_mem(void)
196 long pagesize, pages;
198 pagesize = sysconf(_SC_PAGESIZE);
199 pages = sysconf(_SC_PHYS_PAGES);
200 if (pages == -1 || pagesize == -1)
203 return (unsigned long long) pages * (unsigned long long) pagesize;
206 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
211 static inline long os_random_long(os_random_state_t *rs)
219 static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
221 struct raw_config_request rq;
224 if (major(dev) != RAW_MAJOR)
228 * we should be able to find /dev/rawctl or /dev/raw/rawctl
230 fd = open("/dev/rawctl", O_RDONLY);
232 fd = open("/dev/raw/rawctl", O_RDONLY);
237 rq.raw_minor = minor(dev);
238 if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
244 *majdev = rq.block_major;
245 *mindev = rq.block_minor;
250 #define FIO_O_NOATIME O_NOATIME
252 #define FIO_O_NOATIME 0
256 #define FIO_MADV_FREE MADV_REMOVE
259 #define CACHE_LINE_FILE \
260 "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size"
262 static inline int arch_cache_line_size(void)
267 fd = open(CACHE_LINE_FILE, O_RDONLY);
271 ret = read(fd, size, sizeof(size));