From: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
To: Andrew Morton <akpm@osdl.org>
Cc: Guillaume Thouvenin <guillaume.thouvenin@bull.net>,
kaigai@ak.jp.nec.com, marcelo.tosatti@cyclades.com,
davem@redhat.com, jlan@sgi.com, lse-tech@lists.sourceforge.net,
linux-kernel@vger.kernel.org, netdev@oss.sgi.com,
elsa-devel@lists.sourceforge.net
Subject: Re: [Lse-tech] Re: A common layer for Accounting packages
Date: Mon, 28 Feb 2005 11:04:36 +0300 [thread overview]
Message-ID: <1109577876.28266.9.camel@uganda> (raw)
In-Reply-To: <20050227233943.6cb89226.akpm@osdl.org>
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On Sun, 2005-02-27 at 23:39 -0800, Andrew Morton wrote:
> Guillaume Thouvenin <guillaume.thouvenin@bull.net> wrote:
> >
> > Ok the protocol is maybe too "basic" but with this mechanism the user
> > space application that uses the fork connector can start and stop the
> > send of messages. This implementation needs somme improvements because
> > currently, if two application are using the fork connector one can
> > enable it and the other don't know if it is enable or not, but the idea
> > is here I think.
>
> Yes. But this problem can be solved in userspace, with a little library
> function and a bit of locking.
>
> IOW: use the library to enable/disable the fork connector rather than
> directly doing syscalls.
>
> It has the problem that if a client of that library crashes, the counter
> gets out of whack, but really, it's not all _that_ important, and to handle
> this properly in-kernel each client would need an open fd against some
> object so we can do the close-on-exit thing properly. You'd need to create
> a separate netlink socket for the purpose.
Why dont just extend protocol a bit?
Add header after cn_msg, which will have get/set field and that is all.
Properly using seq/ack fields userspace can avoid locks.
--
Evgeniy Polyakov
Crash is better than data corruption -- Arthur Grabowski
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next prev parent reply other threads:[~2005-02-28 7:59 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-19 0:51 A common layer for Accounting packages Jay Lan
2005-02-19 1:16 ` Andrew Morton
2005-02-21 6:51 ` Guillaume Thouvenin
2005-02-22 20:11 ` [Lse-tech] " Jay Lan
2005-02-23 7:30 ` Guillaume Thouvenin
2005-02-21 7:54 ` Kaigai Kohei
2005-02-22 20:26 ` Jay Lan
2005-02-23 7:07 ` Kaigai Kohei
2005-02-23 7:20 ` Andrew Morton
2005-02-23 8:33 ` Guillaume Thouvenin
2005-02-23 8:51 ` Andrew Morton
2005-02-23 9:30 ` Guillaume Thouvenin
2005-02-23 9:36 ` Andrew Morton
2005-02-23 19:11 ` Jay Lan
2005-02-24 7:42 ` Guillaume Thouvenin
2005-02-23 9:50 ` Tim Schmielau
2005-02-24 22:27 ` Jay Lan
2005-02-23 11:29 ` Kaigai Kohei
2005-02-23 20:48 ` Jay Lan
2005-02-25 5:07 ` Kaigai Kohei
2005-02-25 5:28 ` Andrew Morton
2005-02-25 17:32 ` Jay Lan
2005-02-25 17:45 ` Chris Wright
2005-02-25 18:11 ` Jay Lan
2005-02-25 21:30 ` Andrew Morton
2005-02-25 22:18 ` Jay Lan
2005-02-27 9:49 ` Marcelo Tosatti
2005-02-27 15:20 ` KaiGai Kohei
2005-02-27 14:03 ` Marcelo Tosatti
2005-02-27 19:27 ` David S. Miller
2005-02-28 1:59 ` Kaigai Kohei
2005-02-28 2:32 ` Thomas Graf
2005-02-28 5:17 ` Evgeniy Polyakov
2005-02-28 7:20 ` Guillaume Thouvenin
2005-02-28 7:39 ` Andrew Morton
2005-02-28 8:04 ` Evgeniy Polyakov [this message]
2005-02-28 12:10 ` jamal
2005-02-28 9:29 ` Marcelo Tosatti
2005-02-28 13:20 ` Thomas Graf
2005-02-28 13:40 ` jamal
2005-02-28 13:53 ` Thomas Graf
2005-02-28 9:52 ` Marcelo Tosatti
2005-02-28 14:10 ` jamal
2005-02-28 14:25 ` Thomas Graf
2005-02-28 15:31 ` jamal
2005-02-28 16:17 ` Evgeniy Polyakov
2005-03-01 8:21 ` Guillaume Thouvenin
2005-03-01 13:38 ` Kaigai Kohei
2005-03-01 13:53 ` Guillaume Thouvenin
2005-03-01 14:17 ` Evgeniy Polyakov
2005-03-02 4:50 ` Paul Jackson
2005-03-02 8:58 ` Guillaume Thouvenin
2005-03-02 9:06 ` Andrew Morton
2005-03-02 9:25 ` Guillaume Thouvenin
2005-03-02 15:30 ` Paul Jackson
2005-03-01 20:40 ` Paul Jackson
2005-02-24 1:25 ` Paul Jackson
2005-02-24 1:56 ` Jay Lan
2005-02-24 2:07 ` Paul Jackson
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