41 lines
1.3 KiB
Diff
41 lines
1.3 KiB
Diff
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From 2a34206c26c271460dac547b250980fbc331f424 Mon Sep 17 00:00:00 2001
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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Date: Fri, 21 Mar 2014 20:19:05 +0100
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Subject: [PATCH 297/365] rcu: make RCU_BOOST default on RT
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Since it is no longer invoked from the softirq people run into OOM more
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often if the priority of the RCU thread is too low. Making boosting
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default on RT should help in those case and it can be switched off if
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someone knows better.
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Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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---
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init/Kconfig | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/init/Kconfig b/init/Kconfig
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index d4acd7f21762..150d8b44ab04 100644
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--- a/init/Kconfig
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+++ b/init/Kconfig
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@@ -515,7 +515,7 @@ config TINY_RCU
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config RCU_EXPERT
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bool "Make expert-level adjustments to RCU configuration"
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- default n
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+ default y if PREEMPT_RT_FULL
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help
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This option needs to be enabled if you wish to make
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expert-level adjustments to RCU configuration. By default,
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@@ -659,7 +659,7 @@ config TREE_RCU_TRACE
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config RCU_BOOST
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bool "Enable RCU priority boosting"
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depends on RT_MUTEXES && PREEMPT_RCU && RCU_EXPERT
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- default n
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+ default y if PREEMPT_RT_FULL
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help
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This option boosts the priority of preempted RCU readers that
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block the current preemptible RCU grace period for too long.
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--
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2.28.0
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