+__clib_export clib_bitmap_t *
+os_get_cpu_on_node_bitmap (int node)
+{
+#if __linux__
+ return clib_sysfs_read_bitmap ("/sys/devices/system/node/node%u/cpulist",
+ node);
+#else
+ return 0;
+#endif
+}
+
+__clib_export clib_bitmap_t *
+os_get_cpu_with_memory_bitmap ()
+{
+#if __linux__
+ return clib_sysfs_read_bitmap ("/sys/devices/system/node/has_memory");
+#else
+ return 0;
+#endif
+}
+
+__clib_export int
+os_get_cpu_phys_core_id (int cpu_id)
+{
+#if __linux
+ int core_id = -1;
+ clib_error_t *err;
+ u8 *p;
+
+ p =
+ format (0, "/sys/devices/system/cpu/cpu%u/topology/core_id%c", cpu_id, 0);
+ err = clib_sysfs_read ((char *) p, "%d", &core_id);
+ vec_free (p);
+ if (err)
+ {
+ clib_error_free (err);
+ return -1;
+ }
+ return core_id;
+#else
+ return -1;
+#endif
+}