diff --git a/libc/kernel/common/asm-generic/topology.h b/libc/kernel/common/asm-generic/topology.h
new file mode 100644
index 0000000..089b1f2
--- /dev/null
+++ b/libc/kernel/common/asm-generic/topology.h
@@ -0,0 +1,35 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _ASM_GENERIC_TOPOLOGY_H
+#define _ASM_GENERIC_TOPOLOGY_H
+
+#ifndef cpu_to_node
+#define cpu_to_node(cpu) (0)
+#endif
+#ifndef parent_node
+#define parent_node(node) (0)
+#endif
+#ifndef node_to_cpumask
+#define node_to_cpumask(node) (cpu_online_map)
+#endif
+#ifndef node_to_first_cpu
+#define node_to_first_cpu(node) (0)
+#endif
+#ifndef pcibus_to_node
+#define pcibus_to_node(node) (-1)
+#endif
+
+#ifndef pcibus_to_cpumask
+#define pcibus_to_cpumask(bus) (pcibus_to_node(bus) == -1 ?   CPU_MASK_ALL :   node_to_cpumask(pcibus_to_node(bus))   )
+#endif
+
+#endif