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
34 #define OS_MAP_ANON MAP_ANONYMOUS
36 #ifndef CLOCK_MONOTONIC
37 #define CLOCK_MONOTONIC 1
40 typedef cpu_set_t os_cpu_mask_t;
42 typedef struct drand48_data os_random_state_t;
45 * we want fadvise64 really, but it's so tangled... later
47 #ifdef FIO_HAVE_FADVISE
48 #define fadvise(fd, off, len, advice) \
49 posix_fadvise((fd), (off_t)(off), (len), (advice))
53 * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want
54 * the affinity helpers to work.
57 #define fio_setaffinity(td) \
58 sched_setaffinity((td)->pid, sizeof((td)->o.cpumask), &(td)->o.cpumask)
59 #define fio_getaffinity(pid, ptr) \
60 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
62 #define fio_setaffinity(td) \
63 sched_setaffinity((td)->pid, &(td)->o.cpumask)
64 #define fio_getaffinity(pid, ptr) \
65 sched_getaffinity((pid), (ptr))
68 #define fio_cpu_clear(mask, cpu) CPU_CLR((cpu), (mask))
69 #define fio_cpu_set(mask, cpu) CPU_SET((cpu), (mask))
71 static inline int fio_cpuset_init(os_cpu_mask_t *mask)
77 static inline int fio_cpuset_exit(os_cpu_mask_t *mask)
82 #define FIO_MAX_CPUS CPU_SETSIZE
84 static inline int ioprio_set(int which, int who, int ioprio)
86 return syscall(__NR_ioprio_set, which, who, ioprio);
90 * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
94 #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */
95 #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
96 /* we may still block on the fd we splice */
97 /* from/to, of course */
98 #define SPLICE_F_MORE (0x04) /* expect more data */
99 #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */
101 static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
102 size_t len, unsigned int flags)
104 return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
107 static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
109 return syscall(__NR_sys_tee, fdin, fdout, len, flags);
112 static inline int vmsplice(int fd, const struct iovec *iov,
113 unsigned long nr_segs, unsigned int flags)
115 return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
119 #define SPLICE_DEF_SIZE (64*1024)
121 #ifdef FIO_HAVE_SYSLET
124 struct async_head_user;
129 static inline struct syslet_uatom *
130 async_exec(struct syslet_uatom *atom, struct async_head_user *ahu)
132 return (struct syslet_uatom *) syscall(__NR_async_exec, atom, ahu);
136 async_wait(unsigned long min_wait_events, unsigned long user_ring_idx,
137 struct async_head_user *ahu)
139 return syscall(__NR_async_wait, min_wait_events,
143 static inline long async_thread(void *event, struct async_head_user *ahu)
145 return syscall(__NR_async_thread, event, ahu);
148 static inline long umem_add(unsigned long *uptr, unsigned long inc)
150 return syscall(__NR_umem_add, uptr, inc);
152 #endif /* FIO_HAVE_SYSLET */
162 IOPRIO_WHO_PROCESS = 1,
167 #define IOPRIO_BITS 16
168 #define IOPRIO_CLASS_SHIFT 13
171 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
175 #define BLKFLSBUF _IO(0x12,97)
178 static inline int blockdev_invalidate_cache(int fd)
180 return ioctl(fd, BLKFLSBUF);
183 static inline int blockdev_size(int fd, unsigned long long *bytes)
185 if (!ioctl(fd, BLKGETSIZE64, bytes))
191 static inline unsigned long long os_phys_mem(void)
193 long pagesize, pages;
195 pagesize = sysconf(_SC_PAGESIZE);
196 pages = sysconf(_SC_PHYS_PAGES);
197 if (pages == -1 || pagesize == -1)
200 return (unsigned long long) pages * (unsigned long long) pagesize;
203 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
208 static inline long os_random_long(os_random_state_t *rs)
216 static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
218 struct raw_config_request rq;
221 if (major(dev) != RAW_MAJOR)
225 * we should be able to find /dev/rawctl or /dev/raw/rawctl
227 fd = open("/dev/rawctl", O_RDONLY);
229 fd = open("/dev/raw/rawctl", O_RDONLY);
234 rq.raw_minor = minor(dev);
235 if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
241 *majdev = rq.block_major;
242 *mindev = rq.block_minor;
247 #define FIO_O_NOATIME O_NOATIME
249 #define FIO_O_NOATIME 0