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From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: mingo@elte.hu, laijs@cn.fujitsu.com, dipankar@in.ibm.com,
	akpm@linux-foundation.org, mathieu.desnoyers@polymtl.ca,
	josh@joshtriplett.org, dvhltc@us.ibm.com, niv@us.ibm.com,
	tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org,
	Valdis.Kletnieks@vt.edu, dhowells@redhat.com,
	eric.dumazet@gmail.com,
	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Subject: [PATCH tip/core/rcu 04/10] rcu: allow RCU CPU stall warning messages to be controlled in /sys
Date: Mon,  9 Aug 2010 15:15:05 -0700	[thread overview]
Message-ID: <1281392111-25060-4-git-send-email-paulmck@linux.vnet.ibm.com> (raw)
In-Reply-To: <20100809221447.GA24358@linux.vnet.ibm.com>

Set the permissions of the rcu_cpu_stall_suppress to 644 to enable RCU
CPU stall warnings to be enabled and disabled at runtime via sysfs.

Suggested-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
 kernel/rcutree.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index f3d5906..5d910be 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -145,7 +145,7 @@ module_param(qlowmark, int, 0);
 
 #ifdef CONFIG_RCU_CPU_STALL_DETECTOR
 int rcu_cpu_stall_suppress __read_mostly;
-module_param(rcu_cpu_stall_suppress, int, 0);
+module_param(rcu_cpu_stall_suppress, int, 0644);
 #endif /* #ifdef CONFIG_RCU_CPU_STALL_DETECTOR */
 
 static void force_quiescent_state(struct rcu_state *rsp, int relaxed);
-- 
1.7.0.6


  parent reply	other threads:[~2010-08-09 22:15 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-09 22:14 [PATCH tip/core/rcu 0/N] Additional RCU commits queued for 2.6.37 Paul E. McKenney
2010-08-09 22:15 ` [PATCH tip/core/rcu 01/10] rcu head remove init Paul E. McKenney
2010-08-09 22:15 ` [PATCH tip/core/rcu 02/10] Update documentation to note the passage of INIT_RCU_HEAD() Paul E. McKenney
2010-08-09 22:15 ` [PATCH tip/core/rcu 03/10] Update call_rcu() usage, add synchronize_rcu() Paul E. McKenney
2010-08-09 22:15 ` Paul E. McKenney [this message]
2010-08-09 22:15 ` [PATCH tip/core/rcu 05/10] rcu: restrict TREE_RCU to SMP builds with !PREEMPT Paul E. McKenney
2010-08-09 22:15 ` [PATCH tip/core/rcu 06/10] rcu: Allow RCU CPU stall warnings to be off at boot, but manually enablable Paul E. McKenney
2010-08-09 22:15 ` [PATCH tip/core/rcu 07/10] rcu: Fix RCU_FANOUT help message Paul E. McKenney
2010-08-09 22:15 ` [PATCH tip/core/rcu 08/10] rcu: Add a TINY_PREEMPT_RCU Paul E. McKenney
2010-08-16 15:07   ` Mathieu Desnoyers
2010-08-16 18:33     ` Paul E. McKenney
2010-08-16 19:19       ` Mathieu Desnoyers
2010-08-16 21:32         ` Paul E. McKenney
2010-08-16 21:41           ` Mathieu Desnoyers
2010-08-16 21:55             ` Paul E. McKenney
2010-08-16 22:07               ` Mathieu Desnoyers
2010-08-16 22:24                 ` Paul E. McKenney
2010-08-17  9:36                   ` Lai Jiangshan
2010-08-17 14:35                     ` Paul E. McKenney
2010-08-17 13:27                 ` Steven Rostedt
2010-08-17 14:16                   ` Mathieu Desnoyers
2010-08-17 14:54                     ` Steven Rostedt
2010-08-17 15:55                       ` Mathieu Desnoyers
2010-08-17 16:04                         ` Steven Rostedt
2010-08-17 16:06                           ` Steven Rostedt
2010-08-17 16:25                             ` Mathieu Desnoyers
2010-08-17 19:33                               ` Paul E. McKenney
2010-08-17 20:00                                 ` Paul E. McKenney
2010-08-09 22:15 ` [PATCH tip/core/rcu 09/10] rcu: update obsolete rcu_read_lock() comment Paul E. McKenney
2010-08-16 14:45   ` Mathieu Desnoyers
2010-08-16 17:55     ` Paul E. McKenney
2010-08-16 18:24       ` Mathieu Desnoyers
2010-08-09 22:15 ` [PATCH tip/core/rcu 10/10] rcu: refer RCU CPU stall-warning victims to stallwarn.txt Paul E. McKenney

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