[PATCH 01/16] configure: permit use of io_uring

[Stefan Hajnoczi <stefanha@redhat.com>]

From: Aarushi Mehta <mehta.aaru20@gmail.com>

Signed-off-by: Aarushi Mehta <mehta.aaru20@gmail.com>
Reviewed-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 configure | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/configure b/configure
index 8f8446f52b..3ac597c547 100755
--- a/configure
+++ b/configure
@@ -370,6 +370,7 @@ xen=""
 xen_ctrl_version=""
 xen_pci_passthrough=""
 linux_aio=""
+linux_io_uring=""
 cap_ng=""
 attr=""
 libattr=""
@@ -1249,6 +1250,10 @@ 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"
@@ -1755,6 +1760,7 @@ 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
@@ -3941,6 +3947,21 @@ EOF
     linux_aio=no
   fi
 fi
+##########################################
+# linux-io-uring probe
+
+if test "$linux_io_uring" != "no" ; then
+  if $pkg_config liburing; then
+    linux_io_uring_cflags=$($pkg_config --cflags liburing)
+    linux_io_uring_libs=$($pkg_config --libs liburing)
+    linux_io_uring=yes
+  else
+    if test "$linux_io_uring" = "yes" ; then
+      feature_not_found "linux io_uring" "Install liburing devel"
+    fi
+    linux_io_uring=no
+  fi
+fi
 
 ##########################################
 # TPM emulation is only on POSIX
@@ -6350,6 +6371,7 @@ 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       $kvm"
@@ -6837,6 +6859,11 @@ fi
 if test "$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" >> $config_host_mak
+  echo "LINUX_IO_URING_CFLAGS=$linux_io_uring_cflags" >> $config_host_mak
+  echo "LINUX_IO_URING_LIBS=$linux_io_uring_libs" >> $config_host_mak
+fi
 if test "$attr" = "yes" ; then
   echo "CONFIG_ATTR=y" >> $config_host_mak
 fi
-- 
2.21.0