diff mbox series

[3/3] srcu: Remove redundant GP sequence checks in srcu_funnel_gp_start

Message ID 20241212185126.2193701-3-paulmck@kernel.org (mailing list archive)
State New
Headers show
Series SRCU updates for v6.14 | expand

Commit Message

Paul E. McKenney Dec. 12, 2024, 6:51 p.m. UTC 
From: Feng Lee <379943137@qq.com>

We will perform GP sequence checking at the beginning of srcu_gp_start,
thus making it safe to remove duplicate GP sequence checks prior to
calling srcu_gp_start.

Signed-off-by: Feng Lee <379943137@qq.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 kernel/rcu/srcutree.c | 1 -
 1 file changed, 1 deletion(-)
diff mbox series

Patch

diff --git a/kernel/rcu/srcutree.c b/kernel/rcu/srcutree.c
index 26ef58b481aae..b83c74c4dcc0d 100644
--- a/kernel/rcu/srcutree.c
+++ b/kernel/rcu/srcutree.c
@@ -1077,7 +1077,6 @@  static void srcu_funnel_gp_start(struct srcu_struct *ssp, struct srcu_data *sdp,
 	/* If grace period not already in progress, start it. */
 	if (!WARN_ON_ONCE(rcu_seq_done(&sup->srcu_gp_seq, s)) &&
 	    rcu_seq_state(sup->srcu_gp_seq) == SRCU_STATE_IDLE) {
-		WARN_ON_ONCE(ULONG_CMP_GE(sup->srcu_gp_seq, sup->srcu_gp_seq_needed));
 		srcu_gp_start(ssp);
 
 		// And how can that list_add() in the "else" clause