Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S269396AbUINMXI (ORCPT ); Tue, 14 Sep 2004 08:23:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S269337AbUINMVn (ORCPT ); Tue, 14 Sep 2004 08:21:43 -0400 Received: from clock-tower.bc.nu ([81.2.110.250]:11453 "EHLO localhost.localdomain") by vger.kernel.org with ESMTP id S269361AbUINMVX (ORCPT ); Tue, 14 Sep 2004 08:21:23 -0400 Subject: Re: [patch] sched, tty: fix scheduling latencies in tty_io.c From: Alan Cox To: Ingo Molnar Cc: Andrew Morton , Linux Kernel Mailing List , Alexander Viro In-Reply-To: <20040914120016.GA5422@elte.hu> References: <20040914095731.GA24622@elte.hu> <20040914100652.GB24622@elte.hu> <20040914101904.GD24622@elte.hu> <20040914102517.GE24622@elte.hu> <20040914104449.GA30790@elte.hu> <20040914105048.GA31238@elte.hu> <20040914105904.GB31370@elte.hu> <20040914110237.GC31370@elte.hu> <20040914110611.GA32077@elte.hu> <1095159217.16572.29.camel@localhost.localdomain> <20040914120016.GA5422@elte.hu> Content-Type: text/plain Content-Transfer-Encoding: 7bit Message-Id: <1095160687.16572.34.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 (1.4.6-2) Date: Tue, 14 Sep 2004 12:18:08 +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1010 Lines: 23 On Maw, 2004-09-14 at 13:00, Ingo Molnar wrote: > > Would it not be better to fix the tty layer locking rather than > > introduces new random memory corruptors ? > > sure ... any volunteers? Not that I've seen. I'm fixing some locking but not stuff that depends on lock_kernel(). In the meantime therefore it seems inappropriate to add random corruptors and bugs to the kernel in pursuit of low latency other than as private "add this but beware" patches. The tty I/O patches should not be applied until the tty layer doesn't rely on the lock_kernel locking. So if people want the low latency stuff covering the tty code I suggest that rather than making other peoples machines crash more, they volunteer. The console driver might be a good starting point. Alan - 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/