From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: mingo@kernel.org, laijs@cn.fujitsu.com, dipankar@in.ibm.com,
akpm@linux-foundation.org, mathieu.desnoyers@efficios.com,
josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org,
rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com,
dvhart@linux.intel.com, fweisbec@gmail.com, oleg@redhat.com,
bobby.prani@gmail.com,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Subject: [PATCH tip/core/rcu 05/16] rcu: Hide RCU_NOCB_CPU behind RCU_EXPERT
Date: Fri, 17 Jul 2015 15:20:05 -0700 [thread overview]
Message-ID: <1437171616-13832-5-git-send-email-paulmck@linux.vnet.ibm.com> (raw)
In-Reply-To: <1437171616-13832-1-git-send-email-paulmck@linux.vnet.ibm.com>
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
This commit prevents Kconfig from asking the user about RCU_NOCB_CPU
unless the user really wants to be asked.
Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
---
init/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/init/Kconfig b/init/Kconfig
index fdeff4ab5995..ba1e6eaf4c36 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -698,6 +698,7 @@ config RCU_BOOST_DELAY
config RCU_NOCB_CPU
bool "Offload RCU callback processing from boot-selected CPUs"
depends on TREE_RCU || PREEMPT_RCU
+ depends on RCU_EXPERT || NO_HZ_FULL
default n
help
Use this option to reduce OS jitter for aggressive HPC or
--
1.8.1.5
next prev parent reply other threads:[~2015-07-17 22:23 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-17 22:19 [PATCH tip/core/rcu 0/16] Miscellaneous fixes for 4.3 Paul E. McKenney
2015-07-17 22:20 ` [PATCH tip/core/rcu 01/16] rcu: Drop RCU_USER_QS in favor of NO_HZ_FULL Paul E. McKenney
2015-07-17 22:20 ` [PATCH tip/core/rcu 02/16] rcu: Deinline rcu_read_lock_sched_held() if DEBUG_LOCK_ALLOC Paul E. McKenney
2015-07-17 22:20 ` [PATCH tip/core/rcu 03/16] rcu: Change return type to bool Paul E. McKenney
2015-07-17 22:20 ` [PATCH tip/core/rcu 04/16] rcu: Add RCU-sched flavors of get-state and cond-sync Paul E. McKenney
2015-07-17 22:20 ` Paul E. McKenney [this message]
2015-07-17 22:20 ` [PATCH tip/core/rcu 06/16] rcu: Use WRITE_ONCE in RCU_INIT_POINTER Paul E. McKenney
2015-07-17 22:20 ` [PATCH tip/core/rcu 07/16] rcu: Fix obsolete priority-boosting comment Paul E. McKenney
2015-07-17 22:20 ` [PATCH tip/core/rcu 08/16] rcu: Create a synchronize_rcu_mult() Paul E. McKenney
2015-07-17 22:20 ` [PATCH tip/core/rcu 09/16] cpu: Wait for RCU grace periods concurrently Paul E. McKenney
2015-07-17 22:20 ` [PATCH tip/core/rcu 10/16] rcu: Make rcu_is_watching() really notrace Paul E. McKenney
2015-07-17 22:20 ` [PATCH tip/core/rcu 11/16] rcu: Rename rcu_lockdep_assert() to RCU_LOCKDEP_WARN() Paul E. McKenney
2015-07-17 22:20 ` [PATCH tip/core/rcu 12/16] rcu: Fix backwards RCU_LOCKDEP_WARN() in synchronize_rcu_tasks() Paul E. McKenney
2015-07-17 22:20 ` [PATCH tip/core/rcu 13/16] rcu: Clarify CONFIG_RCU_EQS_DEBUG help text Paul E. McKenney
2015-07-17 22:20 ` [PATCH tip/core/rcu 14/16] rcu: update MAINTAINERS entry Paul E. McKenney
2015-07-17 22:20 ` [PATCH tip/core/rcu 15/16] scripts: Make checkpatch.pl warn on expedited RCU grace periods Paul E. McKenney
2015-07-17 22:37 ` Joe Perches
2015-07-21 0:41 ` Paul E. McKenney
2015-07-21 0:48 ` Joe Perches
2015-07-21 1:02 ` Paul E. McKenney
2015-07-21 0:55 ` Steven Rostedt
2015-07-21 1:06 ` Joe Perches
2015-07-21 1:15 ` Steven Rostedt
2015-07-21 17:18 ` Joe Perches
2015-07-21 20:11 ` Paul E. McKenney
2015-07-21 1:29 ` Paul E. McKenney
2015-07-21 1:58 ` Joe Perches
2015-07-21 3:24 ` Paul E. McKenney
2015-07-17 22:20 ` [PATCH tip/core/rcu 16/16] rcu: Don't disable CPU hotplug during OOM notifiers Paul E. McKenney
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