From: Jan Hudec <bulb@ucw.cz>
To: daniel sheltraw <l5gibson@hotmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: kernel to user-space communication
Date: Mon, 12 Aug 2002 17:51:30 +0200 [thread overview]
Message-ID: <20020812155130.GE14305@vagabond> (raw)
In-Reply-To: <F137zkftciAlUNLFAYp000015b2@hotmail.com>
On Mon, Aug 12, 2002 at 10:40:27AM -0500, daniel sheltraw wrote:
> Is there a way to comminicate to a user-space program that an
> interrupt has occurred in a kernel module?
You can send a signal or you can create a device for a process to wait
on in poll or blocking read. Signals have quite high overhead because of
the need to save state, so device will be faster (it's faster even if
the process shoul clone a thread to handle it).
-------------------------------------------------------------------------------
Jan 'Bulb' Hudec <bulb@ucw.cz>
next prev parent reply other threads:[~2002-08-12 15:48 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-12 15:40 daniel sheltraw
2002-08-12 15:51 ` Jan Hudec [this message]
2002-08-12 16:04 ` Richard B. Johnson
2002-08-12 17:52 Woodruff, Robert J
2002-08-13 7:24 ` Jan Hudec
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