From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933615Ab1ESQ7w (ORCPT ); Thu, 19 May 2011 12:59:52 -0400 Received: from mx1.redhat.com ([209.132.183.28]:63890 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933550Ab1ESQ7v (ORCPT ); Thu, 19 May 2011 12:59:51 -0400 Date: Thu, 19 May 2011 18:58:33 +0200 From: Oleg Nesterov To: Tejun Heo Cc: jan.kratochvil@redhat.com, vda.linux@googlemail.com, linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, indan@nul.nu, bdonlan@gmail.com Subject: Re: [PATCH 10/10] ptrace: implement group stop notification for ptracer Message-ID: <20110519165833.GA19418@redhat.com> References: <1305569849-10448-1-git-send-email-tj@kernel.org> <1305569849-10448-11-git-send-email-tj@kernel.org> <20110519163246.GF17265@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20110519163246.GF17265@redhat.com> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/19, Oleg Nesterov wrote: > > On 05/16, Tejun Heo wrote: > > > > When group stop state of a seized tracee changes, JOBCTL_TRAP_NOTIFY > > is set, which triggers STOP trap but is sticky until the next > > PTRACE_GETSIGINFO. > > I simply can't understand this patch. And the supposed API as it seen > by the user-space. I'm afraid I wasn't clear. I didn't mean the patch is bad, I only meant that I got lost in details and I feel I'll ask more questions later. Oleg.