[RFC,v2,9/9] configure: permit use of io_uring

Commit Message

Aarushi Mehta May 24, 2019, 2:03 p.m. UTC

Signed-off-by: Aarushi Mehta <[e-mail]>
---
 configure | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

--
2.17.1

Comments

Stefan Hajnoczi May 24, 2019, 4:20 p.m. UTC | #1

On Fri, May 24, 2019 at 07:33:37PM +0530, Aarushi Mehta wrote:
> Signed-off-by: Aarushi Mehta <[e-mail]>
> ---
>  configure | 27 +++++++++++++++++++++++++++
>  1 file changed, 27 insertions(+)

I will submit pkg-config support for liburing upstream.  Once this is
available this patch will need to be changed to use $pkg_config liburing
to get cflags and libs.

For now:

Reviewed-by: Stefan Hajnoczi <[e-mail]>

Patch

diff --git a/configure b/configure
index 528b9ff705..86383dc0b3 100755
--- a/configure
+++ b/configure
@@ -365,6 +365,7 @@  xen=""
 xen_ctrl_version=""
 xen_pci_passthrough=""
 linux_aio=""
+linux_io_uring=""
 cap_ng=""
 attr=""
 libattr=""
@@ -1255,6 +1256,10 @@  for opt do
   ;;
   --enable-linux-aio) linux_aio="yes"
   ;;
+  --disable-linux-io-uring) linux_io_uring="no"
+  ;;
+  --enable-linux-io-uring) linux_io_uring="yes"
+  ;;
   --disable-attr) attr="no"
   ;;
   --enable-attr) attr="yes"
@@ -1773,6 +1778,7 @@  disabled with --disable-FEATURE, default is enabled if available:
   vde             support for vde network
   netmap          support for netmap network
   linux-aio       Linux AIO support
+  linux-io-uring  Linux io_uring support
   cap-ng          libcap-ng support
   attr            attr and xattr support
   vhost-net       vhost-net kernel acceleration support
@@ -3962,6 +3968,23 @@  EOF
     linux_aio=no
   fi
 fi
+##########################################
+# linux-io-uring probe
+
+if test "$linux_io_uring" != "no" ; then
+  cat > $TMPC <<EOF
+#include <liburing.h>
+int main(void) { io_uring_queue_init(0, NULL, 0); io_uring_submit(NULL); return 0; }
+EOF
+  if compile_prog "" "-luring" ; then
+    linux_io_uring=yes
+  else
+    if test "$linux_io_uring" = "yes" ; then
+      feature_not_found "linux io_uring" "Install liburing"
+    fi
+    linux_io_uring=no
+  fi
+fi

 ##########################################
 # TPM emulation is only on POSIX
@@ -6378,6 +6401,7 @@  echo "PIE               $pie"
 echo "vde support       $vde"
 echo "netmap support    $netmap"
 echo "Linux AIO support $linux_aio"
+echo "Linux io_uring support $linux_io_uring"
 echo "ATTR/XATTR support $attr"
 echo "Install blobs     $blobs"
 echo "KVM support       $kvm"
@@ -6858,6 +6882,9 @@  fi
 if test "$linux_aio" = "yes" ; then
   echo "CONFIG_LINUX_AIO=y" >> $config_host_mak
 fi
+if test "$linux_io_uring" = "yes" ; then
+  echo "CONFIG_LINUX_IO_URING=y" >> $config_host_mak
+fi
 if test "$attr" = "yes" ; then
   echo "CONFIG_ATTR=y" >> $config_host_mak
 fi