Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752743Ab0ABPL5 (ORCPT ); Sat, 2 Jan 2010 10:11:57 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752609Ab0ABPL4 (ORCPT ); Sat, 2 Jan 2010 10:11:56 -0500 Received: from smtp-out003.kontent.com ([81.88.40.217]:47502 "EHLO smtp-out003.kontent.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751684Ab0ABPLz convert rfc822-to-8bit (ORCPT ); Sat, 2 Jan 2010 10:11:55 -0500 From: Oliver Neukum To: =?utf-8?q?Bart=C5=82omiej_Zimo=C5=84?= Subject: Re: [suspend/resume] Re: userspace notification from module Date: Sat, 2 Jan 2010 16:11:52 +0100 User-Agent: KMail/1.12.2 (Linux/2.6.32-0.1-default; KDE/4.3.1; x86_64; ; ) Cc: linux-kernel@vger.kernel.org References: <686edb2c.6263643a.4b3f4a3b.b60b3@o2.pl> <4B3F5264.7000008@gmail.com> <58607309.1e2f721f.4b3f57c0.807d3@o2.pl> In-Reply-To: <58607309.1e2f721f.4b3f57c0.807d3@o2.pl> MIME-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 8BIT Message-Id: <201001021611.52672.oliver@neukum.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1092 Lines: 23 Am Samstag, 2. Januar 2010 15:27:12 schrieb Bartłomiej Zimoń: > > Register your pids to the kernel module, e.g. via ioctl, and if the > > (intra-kernel) notification will be delivered to your module you just > > send a signal to your registered processes via kill_proc_info(). Guess > > this is at least better than polling a file or sth similar. > > > > I guess netlink could be the "cleaner" solution, but with more overhead?! > > > > This looks like more simple and could be good, after all i think about sending this > module here to add to kernel. So if this solution could be ok i will start to code this part. This has all sorts of implications starting with fork() and going to passing fds over sockets and so on. It is a very bad idea. Use a standard device and all infrastructure for getting SIGIO is in place. Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/