Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756849Ab2BGUHo (ORCPT ); Tue, 7 Feb 2012 15:07:44 -0500 Received: from mx1.redhat.com ([209.132.183.28]:7431 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756574Ab2BGUHn (ORCPT ); Tue, 7 Feb 2012 15:07:43 -0500 Message-ID: <4F31848A.9070406@redhat.com> Date: Tue, 07 Feb 2012 20:07:38 +0000 From: Pedro Alves User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20120131 Thunderbird/10.0 MIME-Version: 1.0 To: Oleg Nesterov CC: Pavel Emelyanov , Jan Kratochvil , Tejun Heo , Andrew Vagin , "linux-kernel@vger.kernel.org" , Cyrill Gorcunov Subject: Re: [PATCH] ptrace: add ability to get clear_tid_address References: <1328267483-3225342-1-git-send-email-avagin@openvz.org> <20120203162519.GB805@google.com> <4F2C0F13.70709@parallels.com> <20120203165132.GA5636@redhat.com> In-Reply-To: <20120203165132.GA5636@redhat.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 822 Lines: 22 On 02/03/2012 04:51 PM, Oleg Nesterov wrote: > On 02/03, Pavel Emelyanov wrote: >> Because there's no need for current to get this value of himself, but can >> be useful for e.g. gdb. > > OK, perhaps this makes sense, I do not know. > > Jan, Pedro, do you think gdb can use PTRACE_GET_TID_ADDRESS (returns > tracee->clear_child_tid) ? Off hand, I'm not picturing a use. But that may well just mean I'm lacking imagination. Andrew, Pavel, did you have a particular idea in mind when you said it may be useful for debugging a multithreading program / gdb? -- Pedro Alves -- 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/