Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757374AbXEXIr4 (ORCPT ); Thu, 24 May 2007 04:47:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755127AbXEXIrs (ORCPT ); Thu, 24 May 2007 04:47:48 -0400 Received: from wr-out-0506.google.com ([64.233.184.226]:58537 "EHLO wr-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755052AbXEXIrr (ORCPT ); Thu, 24 May 2007 04:47:47 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=KhhVyscU3/bkiCAVE4YYrnSB93cWR1PhM39ZRFtXB8+d3fyu8V09q8kFoycIzEIFuzOpO8/FO6WHD2UjOaOvvPnyg6uHNe6IcODyIl5gxCbRuttM4Ux0JL16b+kOUCDRr6t84U7QBRHVWSjvSQNuirdH3D/zyiDl0BktDsLmuF0= Message-ID: Date: Thu, 24 May 2007 03:47:45 -0500 From: "Daniel Newby" To: "Linux Kernel Mailing List" Subject: Re: how to allow board writers to customize driver behavior (watchdog here) In-Reply-To: <20070524052312.GA2447@linux-sh.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <8bd0f97a0705232121j32fcff72hd04b04e37507450e@mail.gmail.com> <20070524052312.GA2447@linux-sh.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 991 Lines: 21 On 5/24/07, Paul Mundt wrote: > It sounds like your constraining your driver based on terminology. > Watchdogs on most embedded platforms support either a 'reset' mode or > otherwise act as periodic timers, trying to push both of these > functionalities in to a watchdog driver is rather pointless. > CONFIG_WATCHDOG implies 'reset' mode by definition. I agree for a product in the hands of a customer: let the watchdog pull your bacon out of the fire. But what about debugging? Suppose your embedded computer with custom drivers locks up solid every few hundred hours. It would be nice if the watchdog gave a stack dump instead erasing the evidence. How about having "action=reset" and "action=debug"? -- Daniel - 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/