6 #include <sys/syscall.h>
9 #include <linux/unistd.h>
10 #include <linux/raw.h>
11 #include <linux/major.h>
15 #define FIO_HAVE_LIBAIO
16 #define FIO_HAVE_POSIXAIO
17 #define FIO_HAVE_FADVISE
18 #define FIO_HAVE_CPU_AFFINITY
19 #define FIO_HAVE_DISK_UTIL
21 #define FIO_HAVE_IOPRIO
22 #define FIO_HAVE_SPLICE
23 #define FIO_HAVE_IOSCHED_SWITCH
24 #define FIO_HAVE_ODIRECT
25 #define FIO_HAVE_HUGETLB
26 #define FIO_HAVE_RAWBIND
27 #define FIO_HAVE_BLKTRACE
29 #define OS_MAP_ANON (MAP_ANONYMOUS)
31 #ifndef CLOCK_MONOTONIC
32 #define CLOCK_MONOTONIC 1
35 #ifdef FIO_HAVE_CPU_AFFINITY
36 typedef cpu_set_t os_cpu_mask_t;
38 typedef int os_cpu_mask_t;
40 typedef struct drand48_data os_random_state_t;
43 * we want fadvise64 really, but it's so tangled... later
45 #ifdef FIO_HAVE_FADVISE
46 #define fadvise(fd, off, len, advice) \
47 posix_fadvise((fd), (off_t)(off), (len), (advice))
51 * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want
52 * the affinity helpers to work.
54 #ifdef FIO_HAVE_CPU_AFFINITY
56 #define fio_setaffinity(td) \
57 sched_setaffinity((td)->pid, sizeof((td)->o.cpumask), &(td)->o.cpumask)
58 #define fio_getaffinity(pid, ptr) \
59 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
61 #define fio_setaffinity(td) \
62 sched_setaffinity((td)->pid, &(td)->o.cpumask)
63 #define fio_getaffinity(pid, ptr) \
64 sched_getaffinity((pid), (ptr))
68 static inline int ioprio_set(int which, int who, int ioprio)
70 return syscall(__NR_ioprio_set, which, who, ioprio);
74 * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
78 #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */
79 #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
80 /* we may still block on the fd we splice */
81 /* from/to, of course */
82 #define SPLICE_F_MORE (0x04) /* expect more data */
83 #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */
85 static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
86 size_t len, unsigned int flags)
88 return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
91 static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
93 return syscall(__NR_sys_tee, fdin, fdout, len, flags);
96 static inline int vmsplice(int fd, const struct iovec *iov,
97 unsigned long nr_segs, unsigned int flags)
99 return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
103 #define SPLICE_DEF_SIZE (64*1024)
105 #ifdef FIO_HAVE_SYSLET
108 struct async_head_user;
113 static inline struct syslet_uatom *
114 async_exec(struct syslet_uatom *atom, struct async_head_user *ahu)
116 return (void *) syscall(__NR_async_exec, atom, ahu);
120 async_wait(unsigned long min_wait_events, unsigned long user_ring_idx,
121 struct async_head_user *ahu)
123 return syscall(__NR_async_wait, min_wait_events,
127 static inline long async_thread(void *event, struct async_head_user *ahu)
129 return syscall(__NR_async_thread, event, ahu);
132 static inline long umem_add(unsigned long *uptr, unsigned long inc)
134 return syscall(__NR_umem_add, uptr, inc);
136 #endif /* FIO_HAVE_SYSLET */
146 IOPRIO_WHO_PROCESS = 1,
151 #define IOPRIO_BITS 16
152 #define IOPRIO_CLASS_SHIFT 13
155 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
159 #define BLKFLSBUF _IO(0x12,97)
162 static inline int blockdev_invalidate_cache(int fd)
164 return ioctl(fd, BLKFLSBUF);
167 static inline int blockdev_size(int fd, unsigned long long *bytes)
169 if (!ioctl(fd, BLKGETSIZE64, bytes))
175 static inline unsigned long long os_phys_mem(void)
177 long pagesize, pages;
179 pagesize = sysconf(_SC_PAGESIZE);
180 pages = sysconf(_SC_PHYS_PAGES);
181 if (pages == -1 || pagesize == -1)
184 return (unsigned long long) pages * (unsigned long long) pagesize;
187 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
192 static inline long os_random_long(os_random_state_t *rs)
200 static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
202 struct raw_config_request rq;
205 if (major(dev) != RAW_MAJOR)
209 * we should be able to find /dev/rawctl or /dev/raw/rawctl
211 fd = open("/dev/rawctl", O_RDONLY);
213 fd = open("/dev/raw/rawctl", O_RDONLY);
218 rq.raw_minor = minor(dev);
219 if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
225 *majdev = rq.block_major;
226 *mindev = rq.block_minor;