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From: Bernhard Walle <bwalle@suse.de>
To: Takenori Nagano <t-nagano@ah.jp.nec.com>
Cc: vgoyal@in.ibm.com, Keith Owens <kaos@sgi.com>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	k-miyoshi@cb.jp.nec.com, kexec@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [patch] add kdump_after_notifier
Date: Tue, 14 Aug 2007 10:53:24 +0200	[thread overview]
Message-ID: <20070814085324.GB19512@suse.de> (raw)
In-Reply-To: <46C16C7B.603@ah.jp.nec.com>

* Takenori Nagano <t-nagano@ah.jp.nec.com> [2007-08-14 10:48]:
> Bernhard Walle wrote:
> > * Takenori Nagano <t-nagano@ah.jp.nec.com> [2007-08-14 10:34]:
> >> Vivek Goyal wrote:
> >>> On Fri, Aug 03, 2007 at 02:05:47PM +1000, Keith Owens wrote:
> >>>
> >>>
> >>> To sum up, couple of options come to mind.
> >>>
> >>> - Register all the RAS tools on die notifier and panic
> >>>   notifier lists with fairly high priority. Export list
> >>>   of RAS tools to user space and allow users to decide the
> >>>   order of execution and priority of RAS tools.
> >>>
> >>> - Create a separate RAS tool notifier list (ras_tool_notifer_list).
> >>>   All the RAS tools register on this list. This list gets priority
> >>>   over die or panic notifier list. User decides the oder of execution
> >>>   of RAS tools. 
> >>>
> >>>   Here assumption is that above list will not be exported to modules.
> >>>   All the RAS tools will be in kernel and they always get a priority
> >>>   to inspect an event.
> >>>
> >>> What do others think?
> >> Very good idea. But there is a problem how to give default priority to RAS tools.
> >>
> >> How about priority changeable notifier_list? User can change list order
> >> dynamically if they want. Of course, we have to give highest priority to kdump
> >> by default. It is very useful for users who want to use some RAS tools.
> > 
> > I think that was the idea of the first “-” (“export list of RAS tools
> > to user space”).
> 
> Ah, sorry.
> 
> I think first idea is very good. How export the list? (sysfs? procfs?)

I think sysfs would be a good solution, e.g. assigning each RAS tool a
priority from 0 to 100 or something like this.


Thanks,
   Bernhard

  reply	other threads:[~2007-08-14  8:53 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-07-19 12:15 Takenori Nagano
2007-07-26 14:07 ` Bernhard Walle
2007-07-26 15:32   ` Vivek Goyal
2007-07-26 15:34     ` Bernhard Walle
2007-07-26 15:44       ` Vivek Goyal
2007-07-26 15:47         ` Bernhard Walle
2007-07-26 15:54           ` Vivek Goyal
2007-07-26 16:14             ` Bernhard Walle
2007-07-26 16:21               ` Bernhard Walle
2007-07-26 23:28             ` Takenori Nagano
2007-07-30  9:16               ` Vivek Goyal
2007-07-30 13:42                 ` Eric W. Biederman
2007-07-31  5:55                   ` Takenori Nagano
2007-07-31  6:53                     ` Eric W. Biederman
2007-08-01  9:26                       ` Takenori Nagano
2007-08-01 10:00                         ` Eric W. Biederman
2007-08-02  8:11                           ` Takenori Nagano
2007-08-02 11:28                           ` Vivek Goyal
2007-08-03  4:05                             ` Keith Owens
2007-08-03  6:25                               ` Andrew Morton
2007-08-03  6:34                                 ` Keith Owens
2007-08-03  7:37                                   ` Andrew Morton
2007-08-03  7:10                                 ` Eric W. Biederman
2007-08-05 11:07                               ` Vivek Goyal
2007-08-14  8:34                                 ` Takenori Nagano
2007-08-14  8:37                                   ` Bernhard Walle
2007-08-14  8:48                                     ` Takenori Nagano
2007-08-14  8:53                                       ` Bernhard Walle [this message]
2007-08-14 13:24                                     ` Vivek Goyal
2007-08-16  9:26                                       ` Takenori Nagano
2007-08-16  9:45                                         ` Bernhard Walle
2007-08-17 10:56                                         ` Vivek Goyal
2007-08-21  7:45                                           ` Takenori Nagano
2007-08-23  3:52                                             ` Vivek Goyal
2007-08-21 13:18                                           ` Jay Lan
2007-08-21 13:21                                             ` Bernhard Walle
2007-08-23  3:56                                             ` Vivek Goyal
2007-08-23 17:34                                               ` Jay Lan

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