linux-kernel - Re: Using kevent for event logging?

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Message-Id: <20070216101742.b3877aca.akpm@linux-foundation.org>
Date:	Fri, 16 Feb 2007 10:17:42 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Michael Holzheu <holzheu2@...ux.vnet.ibm.com>
Cc:	johnpol@....mipt.ru, mschwid2@...ltcfwd.linux.ibm.com,
	heiko.carstens@...ibm.com, linux-kernel@...r.kernel.org
Subject: Re: Using kevent for event logging?

On Fri, 16 Feb 2007 15:57:08 +0100 Michael Holzheu <holzheu2@...ux.vnet.ibm.com> wrote:

> Hallo Evgeniy,
> 
> On s390 we are looking for a good mechanism to notify userspace
> about kernel events. Currently such events are handled with printks
> in most cases. There are automation tools, which want to automatically
> react on kernel events. To get the event information, these tools are
> parsing printks, which is not a really good mechanism for that
> purpose.
> 
> When I read about kevents, I was wondering, if it could be used to solve
> this problem. E.g. it would be possible to put an event number into a
> kevent and provide another interface to get the complete event data.
> 

Wouldn't one simply transport the info across netlink, use kevent (or
select/poll/whatever) for readiness notification?
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