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
28 #define FIO_HAVE_STRSEP
29 #define FIO_HAVE_FALLOCATE
31 #define OS_MAP_ANON (MAP_ANONYMOUS)
33 #ifndef CLOCK_MONOTONIC
34 #define CLOCK_MONOTONIC 1
37 #ifdef FIO_HAVE_CPU_AFFINITY
38 typedef cpu_set_t os_cpu_mask_t;
40 typedef int 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.
56 #ifdef FIO_HAVE_CPU_AFFINITY
58 #define fio_setaffinity(td) \
59 sched_setaffinity((td)->pid, sizeof((td)->o.cpumask), &(td)->o.cpumask)
60 #define fio_getaffinity(pid, ptr) \
61 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
63 #define fio_setaffinity(td) \
64 sched_setaffinity((td)->pid, &(td)->o.cpumask)
65 #define fio_getaffinity(pid, ptr) \
66 sched_getaffinity((pid), (ptr))
70 static inline int ioprio_set(int which, int who, int ioprio)
72 return syscall(__NR_ioprio_set, which, who, ioprio);
76 * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
80 #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */
81 #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
82 /* we may still block on the fd we splice */
83 /* from/to, of course */
84 #define SPLICE_F_MORE (0x04) /* expect more data */
85 #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */
87 static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
88 size_t len, unsigned int flags)
90 return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
93 static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
95 return syscall(__NR_sys_tee, fdin, fdout, len, flags);
98 static inline int vmsplice(int fd, const struct iovec *iov,
99 unsigned long nr_segs, unsigned int flags)
101 return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
105 #define SPLICE_DEF_SIZE (64*1024)
107 #ifdef FIO_HAVE_SYSLET
110 struct async_head_user;
115 static inline struct syslet_uatom *
116 async_exec(struct syslet_uatom *atom, struct async_head_user *ahu)
118 return (void *) syscall(__NR_async_exec, atom, ahu);
122 async_wait(unsigned long min_wait_events, unsigned long user_ring_idx,
123 struct async_head_user *ahu)
125 return syscall(__NR_async_wait, min_wait_events,
129 static inline long async_thread(void *event, struct async_head_user *ahu)
131 return syscall(__NR_async_thread, event, ahu);
134 static inline long umem_add(unsigned long *uptr, unsigned long inc)
136 return syscall(__NR_umem_add, uptr, inc);
138 #endif /* FIO_HAVE_SYSLET */
148 IOPRIO_WHO_PROCESS = 1,
153 #define IOPRIO_BITS 16
154 #define IOPRIO_CLASS_SHIFT 13
157 #define BLKGETSIZE64 _IOR(0x12,114,size_t)
161 #define BLKFLSBUF _IO(0x12,97)
164 static inline int blockdev_invalidate_cache(int fd)
166 return ioctl(fd, BLKFLSBUF);
169 static inline int blockdev_size(int fd, unsigned long long *bytes)
171 if (!ioctl(fd, BLKGETSIZE64, bytes))
177 static inline unsigned long long os_phys_mem(void)
179 long pagesize, pages;
181 pagesize = sysconf(_SC_PAGESIZE);
182 pages = sysconf(_SC_PHYS_PAGES);
183 if (pages == -1 || pagesize == -1)
186 return (unsigned long long) pages * (unsigned long long) pagesize;
189 static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
194 static inline long os_random_long(os_random_state_t *rs)
202 static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
204 struct raw_config_request rq;
207 if (major(dev) != RAW_MAJOR)
211 * we should be able to find /dev/rawctl or /dev/raw/rawctl
213 fd = open("/dev/rawctl", O_RDONLY);
215 fd = open("/dev/raw/rawctl", O_RDONLY);
220 rq.raw_minor = minor(dev);
221 if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
227 *majdev = rq.block_major;
228 *mindev = rq.block_minor;
232 #define FIO_O_NOATIME O_NOATIME