Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752099Ab0LOJiK (ORCPT ); Wed, 15 Dec 2010 04:38:10 -0500 Received: from hera.kernel.org ([140.211.167.34]:45755 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751181Ab0LOJiI (ORCPT ); Wed, 15 Dec 2010 04:38:08 -0500 Message-ID: <4D088C6C.8020800@kernel.org> Date: Wed, 15 Dec 2010 10:37:48 +0100 From: Tejun Heo User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.2.9) Gecko/20100915 Lightning/1.0b2 Thunderbird/3.1.4 MIME-Version: 1.0 To: "Suzuki K. Poulose" CC: Linus Torvalds , linux-kernel@vger.kernel.org, Jeremy Fitzhardinge , Christoph Hellwig , Masami Hiramatsu , Ananth N Mavinakayanahalli , Daisuke HATAYAMA , Andi Kleen , Roland McGrath , Amerigo Wang , KAMEZAWA Hiroyuki , KOSAKI Motohiro , Oleg Nesterov , Andrew Morton Subject: Re: [RFC] [Patch 0/21] Non disruptive application core dump infrastructure References: <20101214152259.67896960@suzukikp> <20101215110446.157bbb25@suzukikp> In-Reply-To: <20101215110446.157bbb25@suzukikp> X-Enigmail-Version: 1.1.1 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.3 (hera.kernel.org [127.0.0.1]); Wed, 15 Dec 2010 09:37:36 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 824 Lines: 22 Hello, Suzuki. On 12/15/2010 06:34 AM, Suzuki K. Poulose wrote: > I'd be very glad not using the freezer if there is a neat way to > accomplish this without the undesired side effects. Tejun's ptrace > enhancement would still require a userland program to control > it(gcore); something contained in the kernel would be ideal. Why is using gcore a bad thing? If we make ptrace avoid the implicit SIGSTOP, the side effects of ptrace would be the same as using freezer but with the benefit that it's properly integrated to the process model and job control. Thanks. -- tejun -- 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/