[PATCH] Support for splice IO engine
diff --git a/os-linux.h b/os-linux.h
index ef2af7c..865853b 100644
--- a/os-linux.h
+++ b/os-linux.h
@@ -2,6 +2,8 @@
#define FIO_OS_LINUX_H
#include <sys/ioctl.h>
+#include <sys/uio.h>
+#include <asm/unistd.h>
#define FIO_HAVE_LIBAIO
#define FIO_HAVE_POSIXAIO
@@ -10,6 +12,7 @@
#define FIO_HAVE_DISK_UTIL
#define FIO_HAVE_SGIO
#define FIO_HAVE_IOPRIO
+#define FIO_HAVE_SPLICE
#define OS_MAP_ANON (MAP_ANONYMOUS)
@@ -31,6 +34,34 @@
return syscall(__NR_ioprio_set, which, who, ioprio);
}
+static _syscall6(int, sys_splice, int, fdin, loff_t *, off_in, int, fdout, loff_t *, off_out, size_t, len, unsigned int, flags);
+static _syscall4(int, sys_vmsplice, int, fd, const struct iovec *, iov, unsigned long, nr_segs, unsigned int, flags);
+static _syscall4(int, sys_tee, int, fdin, int, fdout, size_t, len, unsigned int, flags);
+
+static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out,
+ size_t len, unsigned long flags)
+{
+ return 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 sys_tee(fdin, fdout, len, flags);
+}
+
+static inline int vmsplice(int fd, const struct iovec *iov,
+ unsigned long nr_segs, unsigned int flags)
+{
+ return sys_vmsplice(fd, iov, nr_segs, flags);
+}
+
+#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 */
+
enum {
IOPRIO_WHO_PROCESS = 1,
IOPRIO_WHO_PGRP,