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From: Paul Bolle <pebolle@tiscali.nl>
To: paulmck@linux.vnet.ibm.com
Cc: Vivek Goyal <vgoyal@redhat.com>, Jens Axboe <jaxboe@fusionio.com>,
	linux kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: Mysterious CFQ crash and RCU
Date: Wed, 25 May 2011 12:17:16 +0200	[thread overview]
Message-ID: <1306318636.9059.33.camel@t41.thuisdomein> (raw)
In-Reply-To: <20110523153848.GC2310@linux.vnet.ibm.com>

> Polling is fine.  Please see attached for a script to poll at 15-second
> intervals.  Please also feel free to adjust, just tell me what you
> adjusted.

0) I have not yet tried this script, but I did have a look at it (to see
what's needed to run it).

1) All debugfs files it polls come from kernel/rcutree_trace.c. That
file is written as a module (and will only be built if
CONFIG_TREE_RCU_TRACE isn't "n"). But in init/Kconfig, the
TREE_RCU_TRACE config entry is set to "def_bool".

2) So shouldn't either the config entry be set to "tristate" or the
module support removed from kernel/rcutree_trace.c?


Paul Bolle


  parent reply	other threads:[~2011-05-25 10:17 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-19 22:24 Vivek Goyal
2011-05-21 21:00 ` Paul E. McKenney
2011-05-21 22:23   ` Paul Bolle
2011-05-21 23:54     ` Paul E. McKenney
2011-05-22 19:30       ` Paul Bolle
2011-05-22 20:13         ` Paul E. McKenney
2011-05-23 15:21   ` Vivek Goyal
2011-05-23 15:38     ` Paul E. McKenney
2011-05-23 22:20       ` Paul Bolle
2011-05-24  4:14         ` Paul E. McKenney
2011-05-24  9:41         ` Jens Axboe
2011-05-24 14:35           ` Paul E. McKenney
2011-05-24 14:51             ` Jens Axboe
2011-05-24 15:42               ` Paul E. McKenney
2011-05-24 15:51                 ` Paul E. McKenney
2011-05-25  8:28           ` Paul Bolle
2011-05-25  8:46             ` Jens Axboe
2011-05-25  9:13               ` Paul Bolle
2011-05-25  9:30                 ` Jens Axboe
2011-05-25  9:40                   ` Paul Bolle
2011-05-25 12:48               ` Paul Bolle
2011-05-25 12:51                 ` Jens Axboe
2011-05-25 17:28               ` Paul Bolle
2011-05-25 18:59                 ` Jens Axboe
2011-05-25 10:17       ` Paul Bolle [this message]
2011-05-25 15:33         ` Paul E. McKenney
2011-05-25 17:44           ` Paul Bolle
2011-05-25 20:40             ` Paul E. McKenney
2011-05-26  9:15       ` Paul Bolle
2011-06-03  5:07         ` Paul E. McKenney
2011-06-03 13:45           ` Vivek Goyal
2011-06-03 15:33             ` Paul E. McKenney
2011-06-03 16:54               ` Paul E. McKenney
2011-06-04 12:22             ` Paul Bolle
2011-06-04 12:50           ` Paul Bolle
2011-06-04 16:03             ` Paul E. McKenney
2011-06-04 22:48               ` Paul Bolle
2011-06-04 23:06                 ` Paul E. McKenney
2011-08-04 15:05                   ` Vivek Goyal
2011-08-04 19:43                     ` Jens Axboe
2011-08-04 19:51                       ` Vivek Goyal
2011-06-05  6:56                 ` Jens Axboe
2011-06-05  8:39                   ` Paul Bolle
2011-06-05 10:38                   ` Paul Bolle
2011-06-05 22:51                     ` Jens Axboe
2011-06-06 14:28                   ` Vivek Goyal
2011-05-23 15:36   ` Vivek Goyal

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