From 7ecef0871dd9a879038dbe8a681ab48bd0c92988 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Thu, 4 Aug 2022 17:54:53 -0700 Subject: rcu: Remove ->rgos_polled field from rcu_gp_oldstate structure Because both normal and expedited grace periods increment their respective counters on their pre-scheduler early boot fastpaths, the rcu_gp_oldstate structure no longer needs its ->rgos_polled field. This commit therefore removes this field, shrinking this structure so that it is the same size as an rcu_head structure. Signed-off-by: Paul E. McKenney --- kernel/rcu/tree.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'kernel') diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 8fa5ec0f3d11..b9e8ed00536d 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -3526,7 +3526,6 @@ void get_completed_synchronize_rcu_full(struct rcu_gp_oldstate *rgosp) { rgosp->rgos_norm = RCU_GET_STATE_COMPLETED; rgosp->rgos_exp = RCU_GET_STATE_COMPLETED; - rgosp->rgos_polled = RCU_GET_STATE_COMPLETED; } EXPORT_SYMBOL_GPL(get_completed_synchronize_rcu_full); @@ -3575,7 +3574,6 @@ void get_state_synchronize_rcu_full(struct rcu_gp_oldstate *rgosp) smp_mb(); /* ^^^ */ rgosp->rgos_norm = rcu_seq_snap(&rnp->gp_seq); rgosp->rgos_exp = rcu_seq_snap(&rcu_state.expedited_sequence); - rgosp->rgos_polled = rcu_seq_snap(&rcu_state.gp_seq_polled); } EXPORT_SYMBOL_GPL(get_state_synchronize_rcu_full); @@ -3727,9 +3725,7 @@ bool poll_state_synchronize_rcu_full(struct rcu_gp_oldstate *rgosp) if (rgosp->rgos_norm == RCU_GET_STATE_COMPLETED || rcu_seq_done_exact(&rnp->gp_seq, rgosp->rgos_norm) || rgosp->rgos_exp == RCU_GET_STATE_COMPLETED || - rcu_seq_done_exact(&rcu_state.expedited_sequence, rgosp->rgos_exp) || - rgosp->rgos_polled == RCU_GET_STATE_COMPLETED || - rcu_seq_done_exact(&rcu_state.gp_seq_polled, rgosp->rgos_polled)) { + rcu_seq_done_exact(&rcu_state.expedited_sequence, rgosp->rgos_exp)) { smp_mb(); /* Ensure GP ends before subsequent accesses. */ return true; } -- cgit v1.2.3