1 files changed, 24 insertions, 0 deletions
diff --git a/lib/vdso/datapage.h b/lib/vdso/datapage.h
new file mode 100644
index 000000000000..df4427e42d51
--- /dev/null
+++ b/lib/vdso/datapage.h
@@ -0,0 +1,24 @@
+/*
+ * Userspace implementations of __get_datapage
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __VDSO_DATAPAGE_H
+#define __VDSO_DATAPAGE_H
+
+#error	"vdso: Provide a user space architecture specific definition or"
+#error	"prototype for struct vdso_data *__get_datapage(void).  Also define"
+#error	"ARCH_CLOCK_FIXED_MASK if not provided by cs_mask."
+
+#endif /* __VDSO_DATAPAGE_H */