The following commit has been merged into the core/rcu branch of tip: Commit-ID: a9352f72d6a9e8fe4840b9f0d97af8f5a6c52c79 Gitweb: https://git.kernel.org/tip/a9352f72d6a9e8fe4840b9f0d97af8f5a6c52c79 Author: Paul E. McKenney <paulmck@xxxxxxxxxx> AuthorDate: Thu, 07 May 2020 16:34:38 -07:00 Committer: Paul E. McKenney <paulmck@xxxxxxxxxx> CommitterDate: Mon, 29 Jun 2020 11:58:50 -07:00 rcu: Priority-boost-related sleeps to idle priority This commit converts the long-standing schedule_timeout_interruptible() call used by RCU's priority-boosting kthreads 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_plugin.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index 3522236..25296c1 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -1033,7 +1033,7 @@ static int rcu_boost_kthread(void *arg) if (spincnt > 10) { WRITE_ONCE(rnp->boost_kthread_status, RCU_KTHREAD_YIELDING); trace_rcu_utilization(TPS("End boost kthread@rcu_yield")); - schedule_timeout_interruptible(2); + schedule_timeout_idle(2); trace_rcu_utilization(TPS("Start boost kthread@rcu_yield")); spincnt = 0; }
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