Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757313Ab0HIWPc (ORCPT ); Mon, 9 Aug 2010 18:15:32 -0400 Received: from e3.ny.us.ibm.com ([32.97.182.143]:33663 "EHLO e3.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757203Ab0HIWPW (ORCPT ); Mon, 9 Aug 2010 18:15:22 -0400 From: "Paul E. McKenney" 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" 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 Message-Id: <1281392111-25060-4-git-send-email-paulmck@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.0.6 In-Reply-To: <20100809221447.GA24358@linux.vnet.ibm.com> References: <20100809221447.GA24358@linux.vnet.ibm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1076 Lines: 30 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 Signed-off-by: Paul E. McKenney --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/