[ANNOUNCE] 3.12.14-rt23

From: Sebastian Andrzej Siewior
Date: Fri Mar 21 2014 - 16:14:11 EST

Dear RT folks!

I'm pleased to announce the v3.12.14-rt23 patch set.

Changes since v3.12.14-rt22
- Helmut Buchsbaum run into OOM because RCU did not have enough time to
free memory. The problem appeared while the RCU softirq has been
replaced by the RCU thread. The problem can be "fixed" by giving a
higher priority to the RCU thread or by just enabled the "RCU_BOOST"
kernel option. The kernel option is now enabled by default on an -RT
enabled system and can be disabled by the user if desired.

Known issues:

- bcache is disabled.

The delta patch against v3.12.14-rt22 is appended below and can be found

The RT patch against 3.12.14 can be found here:


The split quilt queue is available at:



diff --git a/init/Kconfig b/init/Kconfig
index 4dea595..f6aeea6 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -642,7 +642,7 @@ config TREE_RCU_TRACE
config RCU_BOOST
bool "Enable RCU priority boosting"
- default n
+ default y if PREEMPT_RT_FULL
This option boosts the priority of preempted RCU readers that
block the current preemptible RCU grace period for too long.
diff --git a/localversion-rt b/localversion-rt
index c29508d..9a218ca 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@
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