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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2014-03-21 20:19:05 +0100
committerSteven Rostedt <rostedt@goodmis.org>2014-04-26 07:05:41 -0400
commitf2cbe6e8fede493b000e69befa6b2ef62c701ea7 (patch)
treeb2e77e0b5945b266c82fc540064e2068eb096f16
parentc16f463674fdfa1636d0353a63ae4ca5f587890f (diff)
rcu: make RCU_BOOST default on RT
Since it is no longer invoked from the softirq people run into OOM more often if the priority of the RCU thread is too low. Making boosting default on RT should help in those case and it can be switched off if someone knows better. Cc: stable-rt@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
-rw-r--r--init/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/init/Kconfig b/init/Kconfig
index 87afda5809d6..548f678d2ba2 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -499,7 +499,7 @@ config TREE_RCU_TRACE
config RCU_BOOST
bool "Enable RCU priority boosting"
depends on RT_MUTEXES && PREEMPT_RCU
- default n
+ default y if PREEMPT_RT_FULL
help
This option boosts the priority of preempted RCU readers that
block the current preemptible RCU grace period for too long.