Commit e0da2374 authored Apr 27, 2018 by Paul E. McKenney

rcu: Move rcu_nocb_gp_get() to ->gp_seq

This commit makes rcu_try_advance_all_cbs() use ->gp_seq. It uses
rcu_seq_ctr() in order to shift away the state bits, so that the
low-order bits of the result may safely be used to index ->nocb_gp_wq[].

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

parent 03c8cb76

kernel/rcu/tree_plugin.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -1852,7 +1852,7 @@ static void rcu_nocb_gp_cleanup(struct swait_queue_head *sq)

		static struct swait_queue_head rcu_nocb_gp_get(struct rcu_node rnp)
		{
		return &rnp->nocb_gp_wq[rnp->completed & 0x1];
		return &rnp->nocb_gp_wq[rcu_seq_ctr(rnp->gp_seq) & 0x1];
		}

		static void rcu_init_one_nocb(struct rcu_node *rnp)