Lines Matching +full:b +full:- +full:side

1 /* SPDX-License-Identifier: GPL-2.0+ */
3  * Read-Copy Update mechanism for mutual exclusion, adapted for tracing.
37  * rcu_read_lock_trace - mark beginning of RCU-trace read-side critical section
40  * task is guaranteed to block until all other tasks exit their read-side
42  * task while other tasks are within RCU read-side critical sections,
52 	WRITE_ONCE(t->trc_reader_nesting, READ_ONCE(t->trc_reader_nesting) + 1);  in rcu_read_lock_trace()
55 	    t->trc_reader_special.b.need_mb)  in rcu_read_lock_trace()
56 		smp_mb(); // Pairs with update-side barriers  in rcu_read_lock_trace()
61  * rcu_read_unlock_trace - mark end of RCU-trace read-side critical section
75 	nesting = READ_ONCE(t->trc_reader_nesting) - 1;  in rcu_read_unlock_trace()
77 	// Disable IPI-based setting of .need_qs.  in rcu_read_unlock_trace()
78 	WRITE_ONCE(t->trc_reader_nesting, INT_MIN + nesting);  in rcu_read_unlock_trace()
79 	if (likely(!READ_ONCE(t->trc_reader_special.s)) || nesting) {  in rcu_read_unlock_trace()
80 		WRITE_ONCE(t->trc_reader_nesting, nesting);  in rcu_read_unlock_trace()