#define FIO_OS_LINUX_H
#include <sys/ioctl.h>
+#include <sys/uio.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <linux/unistd.h>
#define FIO_HAVE_LIBAIO
#define FIO_HAVE_POSIXAIO
#define FIO_HAVE_DISK_UTIL
#define FIO_HAVE_SGIO
#define FIO_HAVE_IOPRIO
+#define FIO_HAVE_SPLICE
+#define FIO_HAVE_IOSCHED_SWITCH
+#define FIO_HAVE_ODIRECT
#define OS_MAP_ANON (MAP_ANONYMOUS)
typedef cpu_set_t os_cpu_mask_t;
+typedef struct drand48_data os_random_state_t;
/*
* we want fadvise64 really, but it's so tangled... later
return syscall(__NR_ioprio_set, which, who, ioprio);
}
+/*
+ * Just check for SPLICE_F_MOVE, if that isn't there, assume the others
+ * aren't either.
+ */
+#ifndef SPLICE_F_MOVE
+#define SPLICE_F_MOVE (0x01) /* move pages instead of copying */
+#define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */
+ /* we may still block on the fd we splice */
+ /* from/to, of course */
+#define SPLICE_F_MORE (0x04) /* expect more data */
+#define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */
+
+static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
+ size_t len, unsigned long flags)
+{
+ return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags);
+}
+
+static inline int tee(int fdin, int fdout, size_t len, unsigned int flags)
+{
+ return syscall(__NR_sys_tee, fdin, fdout, len, flags);
+}
+
+static inline int vmsplice(int fd, const struct iovec *iov,
+ unsigned long nr_segs, unsigned int flags)
+{
+ return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags);
+}
+#endif
+
+#define SPLICE_DEF_SIZE (64*1024)
+
enum {
IOPRIO_WHO_PROCESS = 1,
IOPRIO_WHO_PGRP,
#define BLKGETSIZE64 _IOR(0x12,114,size_t)
#endif
+#ifndef BLKFLSBUF
+#define BLKFLSBUF _IO(0x12,97)
+#endif
+
+static inline int blockdev_invalidate_cache(int fd)
+{
+ if (!ioctl(fd, BLKFLSBUF))
+ return 0;
+
+ return errno;
+}
+
static inline int blockdev_size(int fd, unsigned long long *bytes)
{
if (!ioctl(fd, BLKGETSIZE64, bytes))
return errno;
}
+static inline unsigned long long os_phys_mem(void)
+{
+ long pagesize, pages;
+
+ pagesize = sysconf(_SC_PAGESIZE);
+ pages = sysconf(_SC_PHYS_PAGES);
+ if (pages == -1 || pagesize == -1)
+ return 0;
+
+ return (unsigned long long) pages * (unsigned long long) pagesize;
+}
+
+static inline void os_random_seed(unsigned long seed, os_random_state_t *rs)
+{
+ srand48_r(seed, rs);
+}
+
+static inline long os_random_long(os_random_state_t *rs)
+{
+ long val;
+
+ lrand48_r(rs, &val);
+ return val;
+}
+
+static inline double os_random_double(os_random_state_t *rs)
+{
+ double val;
+
+ drand48_r(rs, &val);
+ return val;
+}
+
#endif