Commit 68c2f27e authored May 07, 2020 by Paul E. McKenney

rcu: Expedited grace-period sleeps to idle priority



This commit converts the schedule_timeout_uninterruptible() call used
by RCU's expedited grace-period processing to schedule_timeout_idle().
This conversion avoids polluting the load-average with RCU-related
sleeping.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

parent f5ca3464

kernel/rcu/tree_exp.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -403,7 +403,7 @@ retry_ipi:
		/* Online, so delay for a bit and try again. */
		raw_spin_unlock_irqrestore_rcu_node(rnp, flags);
		trace_rcu_exp_grace_period(rcu_state.name, rcu_exp_gp_seq_endval(), TPS("selectofl"));
		schedule_timeout_uninterruptible(1);
		schedule_timeout_idle(1);
		goto retry_ipi;
		}
		/* CPU really is offline, so we must report its QS. */

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