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
27 #define OS_MAP_ANON (MAP_ANONYMOUS)
29 #ifndef CLOCK_MONOTONIC
30 #define CLOCK_MONOTONIC 1
33 #ifdef FIO_HAVE_CPU_AFFINITY
34 typedef cpu_set_t os_cpu_mask_t;
36 typedef int os_cpu_mask_t;
38 typedef struct drand48_data os_random_state_t;
41 * we want fadvise64 really, but it's so tangled... later
43 #ifdef FIO_HAVE_FADVISE
44 #define fadvise(fd, off, len, advice) \
45 posix_fadvise((fd), (off_t)(off), (len), (advice))
49 * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want
50 * the affinity helpers to work.
52 #ifdef FIO_HAVE_CPU_AFFINITY
54 #define fio_setaffinity(td) \
55 sched_setaffinity((td)->pid, sizeof((td)->o.cpumask), &(td)->o.cpumask)
56 #define fio_getaffinity(pid, ptr) \
57 sched_getaffinity((pid), sizeof(cpu_set_t), (ptr))
59 #define fio_setaffinity(td) \
60 sched_setaffinity((td)->pid, &(td)->o.cpumask)
61 #define fio_getaffinity(pid, ptr) \
62 sched_getaffinity((pid), (ptr))
66 static inline int ioprio_set(int which, int who, int ioprio)
68 return syscall(__NR_ioprio_set, which, who, ioprio);
72 * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
76 #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */
77 #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
78 /* we may still block on the fd we splice */
79 /* from/to, of course */
80 #define SPLICE_F_MORE (0x04) /* expect more data */
81 #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */
83 static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
84 size_t len, unsigned int flags)
86 return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
89 static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
91 return syscall(__NR_sys_tee, fdin, fdout, len, flags);
94 static inline int vmsplice(int fd, const struct iovec *iov,
95 unsigned long nr_segs, unsigned int flags)
97 return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
101 #ifdef SPLICE_F_UNMAP
102 #define SPLICE_F_UNMAP (0x10)
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 double os_random_double(os_random_state_t *rs)
210 static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev)
212 struct raw_config_request rq;
215 if (major(dev) != RAW_MAJOR)
219 * we should be able to find /dev/rawctl or /dev/raw/rawctl
221 fd = open("/dev/rawctl", O_RDONLY);
223 fd = open("/dev/raw/rawctl", O_RDONLY);
228 rq.raw_minor = minor(dev);
229 if (ioctl(fd, RAW_GETBIND, &rq) < 0) {
235 *majdev = rq.block_major;
236 *mindev = rq.block_minor;