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Commit a458360a authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcu: Drop early GP request check from rcu_gp_kthread() 



Now that grace-period requests use funnel locking and now that they
set ->gp_flags to RCU_GP_FLAG_INIT even when the RCU grace-period
kthread has not yet started, rcu_gp_kthread() no longer needs to check
need_any_future_gp() at startup time.  This commit therefore removes
this check.

Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: default avatarNicholas Piggin <npiggin@gmail.com>
parent c1935209

kernel/rcu/tree.c

+0 −6
Original line number Diff line number Diff line
@@ -2135,12 +2135,6 @@ static int __noreturn rcu_gp_kthread(void *arg) 
	struct rcu_state *rsp = arg;

	struct rcu_node *rnp = rcu_get_root(rsp);



	/* Check for early-boot work. */

	raw_spin_lock_irq_rcu_node(rnp);

	if (need_any_future_gp(rnp))

		WRITE_ONCE(rsp->gp_flags, RCU_GP_FLAG_INIT);

	raw_spin_unlock_irq_rcu_node(rnp);



	rcu_bind_gp_kthread();

	for (;;) {