From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org,
linux-rt-users <linux-rt-users@vger.kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Carsten Emde <C.Emde@osadl.org>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
John Kacur <jkacur@redhat.com>,
Paul Gortmaker <paul.gortmaker@windriver.com>,
<stable-rt@vger.kernel.org>
Subject: [PATCH RT 3/4] rcu: make RCU_BOOST default on RT
Date: Tue, 29 Apr 2014 10:31:01 -0400 [thread overview]
Message-ID: <20140429143112.488914460@goodmis.org> (raw)
In-Reply-To: 20140429143058.198462905@goodmis.org
[-- Attachment #1: 0003-rcu-make-RCU_BOOST-default-on-RT.patch --]
[-- Type: text/plain, Size: 1060 bytes --]
3.10.37-rt38-rc2 stable review patch.
If anyone has any objections, please let me know.
------------------
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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>
---
init/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/init/Kconfig b/init/Kconfig
index 6c3a4fd..bd3612d 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -604,7 +604,7 @@ 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.
--
1.8.5.3
next prev parent reply other threads:[~2014-04-29 14:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-29 14:30 [PATCH RT 0/4] Linux 3.10.37-rt38-rc2 Steven Rostedt
2014-04-29 14:30 ` [PATCH RT 1/4] net: gianfar: do not disable interrupts Steven Rostedt
2014-04-29 14:31 ` [PATCH RT 2/4] net: gianfar: do not try to cleanup TX packets if they are not done Steven Rostedt
2014-04-29 14:31 ` Steven Rostedt [this message]
2014-04-29 14:31 ` [PATCH RT 4/4] Linux 3.10.37-rt38-rc2 Steven Rostedt
-- strict thread matches above, loose matches on Subject: below --
2014-04-27 14:31 [PATCH RT 0/4] Linux 3.10.37-rt38-rc1 Steven Rostedt
2014-04-27 14:31 ` [PATCH RT 3/4] rcu: make RCU_BOOST default on RT Steven Rostedt
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