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authorPaul E. McKenney <paulmck@kernel.org>2022-08-05 03:54:53 +0300
committerPaul E. McKenney <paulmck@kernel.org>2022-08-31 15:09:21 +0300
commit7ecef0871dd9a879038dbe8a681ab48bd0c92988 (patch)
treed047fbdb8f29f922625e4f04b5eb8e0bf64819f0 /kernel/rcu
parent43ff97cc997f5641127152f97e1fd0fc9fa060f6 (diff)
downloadlinux-7ecef0871dd9a879038dbe8a681ab48bd0c92988.tar.xz
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 <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu')
-rw-r--r--kernel/rcu/tree.c6
1 files changed, 1 insertions, 5 deletions
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;
}