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-rw-r--r--configure.ac10
1 files changed, 10 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 1058315..7388cdd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -746,6 +746,16 @@ else
AC_SUBST(HAVE_SYNCHRONIZE_RCU_BH, undef)
fi
+AC_MSG_CHECKING([kernel source for the fourth arg of list_for_each_entry_rcu() in rculist.h])
+if test -f $ksourcedir/include/linux/rculist.h && \
+ $GREP -q 'define list_for_each_entry_rcu(pos, head, member, cond' $ksourcedir/include/linux/rculist.h; then
+ AC_MSG_RESULT(yes)
+ AC_SUBST(HAVE_LIST_FOR_EACH_ENTRY_RCU_FOUR_ARGS, define)
+else
+ AC_MSG_RESULT(no)
+ AC_SUBST(HAVE_LIST_FOR_EACH_ENTRY_RCU_FOUR_ARGS, undef)
+fi
+
AC_MSG_CHECKING([kernel source for struct net_generic])
if test -f $ksourcedir/include/net/netns/generic.h && \
$GREP -q 'struct net_generic' $ksourcedir/include/net/netns/generic.h; then