Read-side critical section nesting is tracked in lower-order bits and grace-period phase number use a single high-order bit
Signed-off-by: Li-Kuan Ou <k777k77...@gmail.com> --- include/urcu/static/urcu-bp.h | 4 ++-- include/urcu/static/urcu-mb.h | 4 ++-- include/urcu/static/urcu-memb.h | 4 ++-- include/urcu/static/urcu-signal.h | 4 ++-- 4 files changed, 8 insertions(+), 8 deletions(-) diff --git a/include/urcu/static/urcu-bp.h b/include/urcu/static/urcu-bp.h index 8ba3830..c90c9f1 100644 --- a/include/urcu/static/urcu-bp.h +++ b/include/urcu/static/urcu-bp.h @@ -137,8 +137,8 @@ static inline enum urcu_bp_state urcu_bp_reader_state(unsigned long *ctr) /* * 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 + * 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 bit that contains either zero * or URCU_BP_GP_CTR_PHASE. The smp_mb_slave() ensures that the accesses in * _urcu_bp_read_lock() happen before the subsequent read-side critical section. */ diff --git a/include/urcu/static/urcu-mb.h b/include/urcu/static/urcu-mb.h index b97e42a..218e2f3 100644 --- a/include/urcu/static/urcu-mb.h +++ b/include/urcu/static/urcu-mb.h @@ -63,8 +63,8 @@ extern DECLARE_URCU_TLS(struct urcu_reader, urcu_mb_reader); /* * Helper for _urcu_mb_read_lock(). The format of urcu_mb_gp.ctr (as well as - * the per-thread rcu_reader.ctr) has the upper bits containing a count of - * _urcu_mb_read_lock() nesting, and a lower-order bit that contains either zero + * the per-thread rcu_reader.ctr) has the lower-order bits containing a count of + * _urcu_mb_read_lock() nesting, and a single high-order bit that contains either zero * or URCU_GP_CTR_PHASE. The cmm_smp_mb() ensures that the accesses in * _urcu_mb_read_lock() happen before the subsequent read-side critical section. */ diff --git a/include/urcu/static/urcu-memb.h b/include/urcu/static/urcu-memb.h index c8d102f..b923f73 100644 --- a/include/urcu/static/urcu-memb.h +++ b/include/urcu/static/urcu-memb.h @@ -86,8 +86,8 @@ extern DECLARE_URCU_TLS(struct urcu_reader, urcu_memb_reader); /* * Helper for _rcu_read_lock(). The format of urcu_memb_gp.ctr (as well as - * the per-thread rcu_reader.ctr) has the upper bits containing a count of - * _rcu_read_lock() nesting, and a lower-order bit that contains either zero + * the per-thread rcu_reader.ctr) has the lower-order bits containing a count of + * _rcu_read_lock() nesting, and a single high-order bit that contains either zero * or URCU_GP_CTR_PHASE. The smp_mb_slave() ensures that the accesses in * _rcu_read_lock() happen before the subsequent read-side critical section. */ diff --git a/include/urcu/static/urcu-signal.h b/include/urcu/static/urcu-signal.h index c7577d3..00588b8 100644 --- a/include/urcu/static/urcu-signal.h +++ b/include/urcu/static/urcu-signal.h @@ -64,8 +64,8 @@ extern DECLARE_URCU_TLS(struct urcu_reader, urcu_signal_reader); /* * Helper for _rcu_read_lock(). The format of urcu_signal_gp.ctr (as well as - * the per-thread rcu_reader.ctr) has the upper bits containing a count of - * _rcu_read_lock() nesting, and a lower-order bit that contains either zero + * the per-thread rcu_reader.ctr) has the lower-order bits containing a count of + * _rcu_read_lock() nesting, and a single high-order bit that contains either zero * or URCU_GP_CTR_PHASE. The cmm_barrier() ensures that the accesses in * _rcu_read_lock() happen before the subsequent read-side critical section. */ -- 2.34.1 _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
