#include <pthread.h>
#include <unistd.h>
+#include <urcu/debug.h>
#include <urcu/config.h>
#include <urcu/compiler.h>
#include <urcu/arch.h>
#include <urcu/uatomic.h>
#include <urcu/list.h>
#include <urcu/tls-compat.h>
-#include <urcu/debug.h>
/*
* This code section can only be included in LGPL 2.1 compatible source code.
/*
* Helper for _urcu_bp_read_lock(). The format of urcu_bp_gp.ctr (as well as
- * the per-thread rcu_reader.ctr) has the upper bits containing a count of
- * _urcu_bp_read_lock() nesting, and a lower-order bit that contains either zero
- * or URCU_BP_GP_CTR_PHASE. The smp_mb_slave() ensures that the accesses in
+ * the per-thread rcu_reader.ctr) has the lower-order bits containing a count of
+ * _urcu_bp_read_lock() nesting, and a single high-order URCU_BP_GP_CTR_PHASE bit
+ * that contains either zero or one. The smp_mb_slave() ensures that the accesses in
* _urcu_bp_read_lock() happen before the subsequent read-side critical section.
*/
static inline void _urcu_bp_read_lock_update(unsigned long tmp)