--- /dev/null
+
+#define read_free_race (read_generation[0] == last_free_gen)
+#define read_free (free_done && data_access[0])
+
+//#define TEST_SIGNAL
+//#define TEST_SIGNAL_ON_READ
+//#define TEST_SIGNAL_ON_WRITE
+
+#define RCU_GP_CTR_BIT (1 << 7)
+#define RCU_GP_CTR_NEST_MASK (RCU_GP_CTR_BIT - 1)
+
+#ifndef READER_NEST_LEVEL
+//#define READER_NEST_LEVEL 1
+#define READER_NEST_LEVEL 2
+#endif
+
+#define REMOTE_BARRIERS