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 11/23] rcu: enable CPU_STALL_VERBOSE by default
Date: Tue, 20 Apr 2010 14:44:43 -0700 [thread overview]
Message-ID: <1271799895-21028-11-git-send-email-paulmck@linux.vnet.ibm.com> (raw)
In-Reply-To: <20100420214431.GA20777@linux.vnet.ibm.com>
The CPU_STALL_VERBOSE kernel configuration parameter was added to
2.6.34 to identify any preempted/blocked tasks that were preventing
the current grace period from completing when running preemptible
RCU. As is conventional for new configurations parameters, this
defaulted disabled. It is now time to enable it by default.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
lib/Kconfig.debug | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 935248b..40d7be7 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -793,7 +793,7 @@ config RCU_CPU_STALL_DETECTOR
config RCU_CPU_STALL_VERBOSE
bool "Print additional per-task information for RCU_CPU_STALL_DETECTOR"
depends on RCU_CPU_STALL_DETECTOR && TREE_PREEMPT_RCU
- default n
+ default y
help
This option causes RCU to printk detailed per-task information
for any tasks that are stalling the current RCU grace period.
--
1.7.0
next prev parent reply other threads:[~2010-04-20 21:48 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-20 21:44 [PATCH tip/core/rcu 0/23] v3 patches queued for 2.6.35 Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 01/23] rcu: substitute set_need_resched for sending resched IPIs Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 02/23] rcu: make dead code really dead Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 03/23] rcu: move some code from macro to function Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 04/23] rcu: ignore offline CPUs in last non-dyntick-idle CPU check Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 05/23] rcu: Fix bogus CONFIG_PROVE_LOCKING in comments to reflect reality Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 06/23] rcu: fix now-bogus rcu_scheduler_active comments Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 07/23] rcu: shrink rcutiny by making synchronize_rcu_bh() be inline Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 08/23] rcu: rename rcutiny rcu_ctrlblk to rcu_sched_ctrlblk Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 09/23] rcu: refactor RCU's context-switch handling Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 10/23] rcu: slim down rcutiny by removing rcu_scheduler_active and friends Paul E. McKenney
2010-04-20 21:44 ` Paul E. McKenney [this message]
2010-04-20 21:44 ` [PATCH tip/core/rcu 12/23] rcu: disable CPU stall warnings upon panic Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 13/23] rcu: print boot-time console messages if RCU configs out of ordinary Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 14/23] rcu: improve RCU CPU stall-warning messages Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 15/23] rcu: permit discontiguous cpu_possible_mask CPU numbering Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 16/23] rcu: v2: reduce the number of spurious RCU_SOFTIRQ invocations Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 17/23] rcu: improve the RCU CPU-stall warning documentation Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 18/23] Debugobjects transition check Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 19/23] rcu head introduce rcu head init on stack Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 20/23] remove all rcu head initializations, except on_stack initializations Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 21/23] rcu head remove init Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 22/23] tree/tiny rcu: Add debug RCU head objects (v5) Paul E. McKenney
2010-04-20 21:44 ` [PATCH tip/core/rcu 23/23] rcu: make SRCU usable in modules Paul E. McKenney
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