[1/3] NUMA: add Linux libnuma detection

Commit Message

Andre Przywara June 23, 2010, 9:09 p.m. UTC

None

Patch

diff --git a/configure b/configure
index 08883e7..3e2dc5b 100755
--- a/configure
+++ b/configure
@@ -281,6 +281,7 @@  vnc_sasl=""
 xen=""
 linux_aio=""
 vhost_net=""
+numa="yes"
 
 gprof="no"
 debug_tcg="no"
@@ -721,6 +722,10 @@  for opt do
   ;;
   --enable-vhost-net) vhost_net="yes"
   ;;
+  --disable-numa) numa="no"
+  ;;
+  --enable-numa) numa="yes"
+  ;;
   --*dir)
   ;;
   *) echo "ERROR: unknown option $opt"; show_help="yes"
@@ -905,6 +910,8 @@  echo "  --enable-docs            enable documentation build"
 echo "  --disable-docs           disable documentation build"
 echo "  --disable-vhost-net      disable vhost-net acceleration support"
 echo "  --enable-vhost-net       enable vhost-net acceleration support"
+echo "  --disable-numa           disable host Linux NUMA support"
+echo "  --enable-numa            enable host Linux NUMA support"
 echo ""
 echo "NOTE: The object files are built at the place where configure is launched"
 exit 1
@@ -1962,6 +1969,28 @@  if compile_prog "" "" ; then
   signalfd=yes
 fi
 
+##########################################
+# libnuma probe
+
+if test "$numa" = "yes" ; then
+  numa=no
+  cat > $TMPC << EOF
+#include <numa.h>
+int main(void) { return numa_available(); }
+EOF
+
+  if compile_prog "" "-lnuma" ; then
+    numa=yes
+    libs_softmmu="-lnuma $libs_softmmu"
+  else
+    if test "$numa" = "yes" ; then
+      feature_not_found "linux NUMA (install numactl?)"
+    fi
+    numa=no
+  fi
+fi
+
+
 # check if eventfd is supported
 eventfd=no
 cat > $TMPC << EOF
@@ -2245,6 +2274,7 @@  echo "preadv support    $preadv"
 echo "fdatasync         $fdatasync"
 echo "uuid support      $uuid"
 echo "vhost-net support $vhost_net"
+echo "NUMA host support $numa"
 
 if test $sdl_too_old = "yes"; then
 echo "-> Your SDL version is too old - please upgrade to have SDL support"
@@ -2468,6 +2498,9 @@  if test $cpu_emulation = "yes"; then
 else
   echo "CONFIG_NO_CPU_EMULATION=y" >> $config_host_mak
 fi
+if test "$numa" = "yes"; then
+  echo "CONFIG_NUMA=y" >> $config_host_mak
+fi
 
 # XXX: suppress that
 if [ "$bsd" = "yes" ] ; then