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[PATCH tip/core/rcu 12/48] rcu: enable CPU_STALL_VERBOSE by default

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From: Paul E. McKenney
Subject: [PATCH tip/core/rcu 12/48] rcu: enable CPU_STALL_VERBOSE by default
Date: Tuesday, May 4, 2010 - 1:19 pm

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 94090b4..930a9e5 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -805,7 +805,7 @@ 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

--
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Messages in current thread:
[PATCH tip/core/rcu 01/48] rcu: optionally leave lockdep e ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 02/48] rcu: substitute set_need_resche ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 03/48] rcu: make dead code really dead, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 04/48] rcu: move some code from macro ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 05/48] rcu: ignore offline CPUs in las ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 06/48] rcu: Fix bogus CONFIG_PROVE_LOC ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 07/48] rcu: fix now-bogus rcu_schedule ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 08/48] rcu: shrink rcutiny by making s ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 09/48] rcu: rename rcutiny rcu_ctrlblk ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 10/48] rcu: refactor RCU's context-swi ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 11/48] rcu: slim down rcutiny by remov ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 12/48] rcu: enable CPU_STALL_VERBOSE b ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 13/48] rcu: disable CPU stall warnings ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 14/48] rcu: print boot-time console me ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 15/48] rcu: improve RCU CPU stall-warn ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 16/48] rcu: permit discontiguous cpu_p ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 17/48] rcu: v2: reduce the number of s ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 18/48] rcu: improve the RCU CPU-stall ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 19/48] Debugobjects transition check, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 20/48] rcu head introduce rcu head ini ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 21/48] remove all rcu head initializat ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 22/48] rcu head remove init, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 23/48] tree/tiny rcu: Add debug RCU he ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 24/48] rcu: make SRCU usable in modules, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 0/48] v4 patches queued for 2.6.35, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 25/48] rcu: fix debugobjects rcu head ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 26/48] rcu: RCU_FAST_NO_HZ must check ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 27/48] vfs: add fs.h to define struct file, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 28/48] net: Make accesses to -&gt;br_port ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 29/48] rcu: add an rcu_dereference_ind ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 30/48] mce: convert to rcu_dereference ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 31/48] rcu: define __rcu address space ..., Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 32/48] rculist: avoid __rcu annotations, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 33/48] cgroups: __rcu annotations, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 34/48] credentials: rcu annotation, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 35/48] keys: __rcu annotations, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 36/48] nfs: __rcu annotations, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 37/48] net: __rcu annotations for drivers, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 38/48] perf_event: __rcu annotations, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 39/48] notifiers: __rcu annotations, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 40/48] radix-tree: __rcu annotations, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 41/48] idr: __rcu annotations, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 42/48] input: __rcu annotations, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 43/48] vhost: add __rcu annotations, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 44/48] net/netfilter: __rcu annotations, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 45/48] kvm: add __rcu annotations, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 46/48] kernel: __rcu annotations, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 47/48] net: __rcu annotations, Paul E. McKenney, (Tue May 4, 1:19 pm)
[PATCH tip/core/rcu 48/48] kvm: more __rcu annotations, Paul E. McKenney, (Tue May 4, 1:19 pm)
Re: [PATCH tip/core/rcu 21/48] remove all rcu head initial ..., Matt Mackall, (Tue May 4, 1:27 pm)
Re: [PATCH tip/core/rcu 21/48] remove all rcu head initial ..., Paul E. McKenney, (Tue May 4, 1:36 pm)
Re: [PATCH tip/core/rcu 33/48] cgroups: __rcu annotations, Paul Menage, (Tue May 4, 1:48 pm)
Re: [PATCH tip/core/rcu 31/48] rcu: define __rcu address s ..., Arnd Bergmann, (Tue May 4, 1:58 pm)
Re: [PATCH tip/core/rcu 28/48] net: Make accesses to -&gt;br_ ..., Stephen Hemminger, (Tue May 4, 2:26 pm)
Re: [PATCH tip/core/rcu 43/48] vhost: add __rcu annotations, Michael S. Tsirkin, (Tue May 4, 2:39 pm)
Re: [PATCH tip/core/rcu 28/48] net: Make accesses to -&gt;br_ ..., Arnd Bergmann, (Tue May 4, 2:41 pm)
Re: [PATCH tip/core/rcu 31/48] rcu: define __rcu address s ..., Paul E. McKenney, (Tue May 4, 4:07 pm)
Re: [PATCH tip/core/rcu 21/48] remove all rcu head initial ..., James Morris, (Tue May 4, 4:44 pm)
Re: [PATCH tip/core/rcu 43/48] vhost: add __rcu annotations, Paul E. McKenney, (Tue May 4, 4:57 pm)
Re: [PATCH tip/core/rcu 43/48] vhost: add __rcu annotations, Michael S. Tsirkin, (Tue May 4, 4:59 pm)
Re: [PATCH tip/core/rcu 21/48] remove all rcu head initial ..., Paul E. McKenney, (Tue May 4, 5:03 pm)
Re: [PATCH tip/core/rcu 33/48] cgroups: __rcu annotations, Paul E. McKenney, (Tue May 4, 5:04 pm)
Re: [PATCH tip/core/rcu 43/48] vhost: add __rcu annotations, Paul E. McKenney, (Tue May 4, 5:39 pm)
Re: [PATCH tip/core/rcu 36/48] nfs: __rcu annotations, David Howells, (Wed May 5, 3:14 am)
Re: [PATCH tip/core/rcu 36/48] nfs: __rcu annotations, Trond Myklebust, (Wed May 5, 5:44 am)
Re: [PATCH tip/core/rcu 36/48] nfs: __rcu annotations, Paul E. McKenney, (Wed May 5, 2:01 pm)
Re: [PATCH tip/core/rcu 28/48] net: Make accesses to -&gt;br_ ..., Paul E. McKenney, (Wed May 5, 3:03 pm)
Re: [PATCH tip/core/rcu 01/48] rcu: optionally leave lockd ..., Mathieu Desnoyers, (Wed May 5, 3:46 pm)
Re: [PATCH tip/core/rcu 01/48] rcu: optionally leave lockd ..., Paul E. McKenney, (Wed May 5, 4:05 pm)
Re: [PATCH tip/core/rcu 01/48] rcu: optionally leave lockd ..., Mathieu Desnoyers, (Wed May 5, 4:24 pm)
Re: [PATCH tip/core/rcu 01/48] rcu: optionally leave lockd ..., Paul E. McKenney, (Wed May 5, 4:36 pm)
Re: [PATCH tip/core/rcu 01/48] rcu: optionally leave lockd ..., Mathieu Desnoyers, (Wed May 5, 7:05 pm)
Re: [PATCH tip/core/rcu 28/48] net: Make accesses to -&gt;br_ ..., Arnd Bergmann, (Thu May 6, 7:09 am)
Re: [PATCH tip/core/rcu 01/48] rcu: optionally leave lockd ..., Paul E. McKenney, (Thu May 6, 4:09 pm)
Re: [PATCH tip/core/rcu 28/48] net: Make accesses to -&gt;br_ ..., Paul E. McKenney, (Thu May 6, 4:12 pm)