6 #include <sys/syscall.h>
9 #include <linux/unistd.h>
10 #include <linux/raw.h>
11 #include <linux/major.h>
13 #define FIO_HAVE_LIBAIO
14 #define FIO_HAVE_POSIXAIO
15 #define FIO_HAVE_FADVISE
16 #define FIO_HAVE_CPU_AFFINITY
17 #define FIO_HAVE_DISK_UTIL
19 #define FIO_HAVE_IOPRIO
20 #define FIO_HAVE_SPLICE
21 #define FIO_HAVE_IOSCHED_SWITCH
22 #define FIO_HAVE_ODIRECT
23 #define FIO_HAVE_HUGETLB
24 #define FIO_HAVE_RAWBIND
25 #define FIO_HAVE_BLKTRACE
26 #define FIO_HAVE_SETPSHARED
28 #define OS_MAP_ANON (MAP_ANONYMOUS)
30 #ifndef CLOCK_MONOTONIC
31 #define CLOCK_MONOTONIC 1
34 #ifdef FIO_HAVE_CPU_AFFINITY
35 typedef cpu_set_t os_cpu_mask_t;
37 typedef int os_cpu_mask_t;
39 typedef struct drand48_data os_random_state_t;
42 * we want fadvise64 really, but it's so tangled... later
44 #ifdef FIO_HAVE_FADVISE
45 #define fadvise(fd, off, len, advice) \
46 posix_fadvise((fd), (off_t)(off), (len), (advice))
50 * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want
51 * the affinity helpers to work.
53 #ifdef FIO_HAVE_CPU_AFFINITY
55 #define fio_setaffinity(td) \
56 sched_setaffinity((td)->pid, sizeof((td)->o.cpumask), &(td)->o.cpumask)
57 #define fio_getaffinity(pid, ptr) \
58 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
60 #define fio_setaffinity(td) \
61 sched_setaffinity((td)->pid, &(td)->o.cpumask)
62 #define fio_getaffinity(pid, ptr) \
63 sched_getaffinity((pid), (ptr))
67 #ifndef FIO_HAVE_SETPSHARED
68 #define pthread_mutexattr_setpshared(attr, pshared) (0)
71 static inline int ioprio_set(int which, int who, int ioprio)
73 return syscall(__NR_ioprio_set, which, who, ioprio);
77 * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
81 #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */
82 #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
83 /* we may still block on the fd we splice */
84 /* from/to, of course */
85 #define SPLICE_F_MORE (0x04) /* expect more data */
86 #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */
88 static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
89 size_t len, unsigned int flags)
91 return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
94 static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
96 return syscall(__NR_sys_tee, fdin, fdout, len, flags);
99 static inline int vmsplice(int fd, const struct iovec *iov,
100 unsigned long nr_segs, unsigned int flags)
102 return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
106 #ifdef SPLICE_F_UNMAP
107 #define SPLICE_F_UNMAP (0x10)
110 #define SPLICE_DEF_SIZE (64*1024)
112 #ifdef FIO_HAVE_SYSLET
115 struct async_head_user;
120 static inline struct syslet_uatom *
121 async_exec(struct syslet_uatom *atom, struct async_head_user *ahu)
123 return (void *) syscall(__NR_async_exec, atom, ahu);
127 async_wait(unsigned long min_wait_events, unsigned long user_ring_idx,
128 struct async_head_user *ahu)
130 return syscall(__NR_async_wait, min_wait_events,
134 static inline long async_thread(void *event, struct async_head_user *ahu)
136 return syscall(__NR_async_thread, event, ahu);
139 static inline long umem_add(unsigned long *uptr, unsigned long inc)
141 return syscall(__NR_umem_add, uptr, inc);
143 #endif /* FIO_HAVE_SYSLET */
153 IOPRIO_WHO_PROCESS = 1,
158 #define IOPRIO_BITS 16
159 #define IOPRIO_CLASS_SHIFT 13
162 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
166 #define BLKFLSBUF _IO(0x12,97)
169 static inline int blockdev_invalidate_cache(int fd)
171 return ioctl(fd, BLKFLSBUF);
174 static inline int blockdev_size(int fd, unsigned long long *bytes)
176 if (!ioctl(fd, BLKGETSIZE64, bytes))
182 static inline unsigned long long os_phys_mem(void)
184 long pagesize, pages;
186 pagesize = sysconf(_SC_PAGESIZE);
187 pages = sysconf(_SC_PHYS_PAGES);
188 if (pages == -1 || pagesize == -1)
191 return (unsigned long long) pages * (unsigned long long) pagesize;
194 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
199 static inline long os_random_long(os_random_state_t *rs)
207 static inline double os_random_double(os_random_state_t *rs)
215 static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
217 struct raw_config_request rq;
220 if (major(dev) != RAW_MAJOR)
224 * we should be able to find /dev/rawctl or /dev/raw/rawctl
226 fd = open("/dev/rawctl", O_RDONLY);
228 fd = open("/dev/raw/rawctl", O_RDONLY);
233 rq.raw_minor = minor(dev);
234 if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
240 *majdev = rq.block_major;
241 *mindev = rq.block_minor;