The following commit has been merged into the core/rcu branch of tip: Commit-ID: 68c2f27e01f61760e6ae76fff9682e1ffe9bacb6 Gitweb: https://git.kernel.org/tip/68c2f27e01f61760e6ae76fff9682e1ffe9bacb6 Author: Paul E. McKenney <paulmck@xxxxxxxxxx> AuthorDate: Thu, 07 May 2020 16:38:29 -07:00 Committer: Paul E. McKenney <paulmck@xxxxxxxxxx> CommitterDate: Mon, 29 Jun 2020 11:58:50 -07:00 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@xxxxxxxxxx> --- kernel/rcu/tree_exp.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/rcu/tree_exp.h b/kernel/rcu/tree_exp.h index 72952ed..1888c0e 100644 --- a/kernel/rcu/tree_exp.h +++ b/kernel/rcu/tree_exp.h @@ -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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