From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758940AbcAKL2J (ORCPT ); Mon, 11 Jan 2016 06:28:09 -0500 Received: from mail-wm0-f66.google.com ([74.125.82.66]:36180 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751942AbcAKL2H (ORCPT ); Mon, 11 Jan 2016 06:28:07 -0500 Date: Mon, 11 Jan 2016 12:28:02 +0100 From: Ingo Molnar To: Alexander Shishkin Cc: Peter Zijlstra , Vince Weaver , linux-kernel@vger.kernel.org, Ingo Molnar , Arnaldo Carvalho de Melo , Stephane Eranian Subject: Re: perf_event_open() ABI compatability Message-ID: <20160111112802.GB4921@gmail.com> References: <20160105090904.GY6357@twins.programming.kicks-ass.net> <87fuy49zn1.fsf@ashishki-desk.ger.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87fuy49zn1.fsf@ashishki-desk.ger.corp.intel.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Alexander Shishkin wrote: > >> Ideally we would somehow want E2BIG returned plus the size of __reserved_1 if > >> the value of __reserved_1 is not zero. I suppose at this point in the game > >> it's too late for this to be much help and we're going to have to work around > >> the problem forever anyway. > > > > Right :/ So I was hoping some of that extended error reporting stuff from > > Alexander Shishkin would help out with this. Not sure where that stranded -- I > > think in the attempt to make it too generic or so. > > Yep. I can respin it back into perf-specific shape, so do we still want it? Yeah, please do! Thanks, Ingo