From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751861AbaFEL6g (ORCPT ); Thu, 5 Jun 2014 07:58:36 -0400 Received: from mail-wi0-f182.google.com ([209.85.212.182]:43546 "EHLO mail-wi0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750723AbaFEL6e (ORCPT ); Thu, 5 Jun 2014 07:58:34 -0400 Date: Thu, 5 Jun 2014 13:58:29 +0200 From: Ingo Molnar To: Alexander Shishkin Cc: Peter Zijlstra , Ingo Molnar , linux-kernel@vger.kernel.org, Frederic Weisbecker , Mike Galbraith , Paul Mackerras , Stephane Eranian , Andi Kleen Subject: Re: [RFC 2/2] perf: add AUX area to ring buffer for raw data streams Message-ID: <20140605115829.GA29720@gmail.com> References: <1400166510-9234-1-git-send-email-alexander.shishkin@linux.intel.com> <1400166510-9234-3-git-send-email-alexander.shishkin@linux.intel.com> <20140519085854.GW30445@twins.programming.kicks-ass.net> <87bnuuylha.fsf@ashishki-desk.ger.corp.intel.com> <20140520095102.GV2485@laptop.programming.kicks-ass.net> <8761kzz0v1.fsf@ashishki-desk.ger.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8761kzz0v1.fsf@ashishki-desk.ger.corp.intel.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Alexander Shishkin wrote: > @@ -300,6 +300,7 @@ struct pmu { > * struct pmu::capabilities flags > */ > #define PERF_PMU_CAP_NO_INTERRUPT 1 > +#define PERF_PMU_CAP_AUX_BROKEN_SG 2 Btw., I'd name it PERF_PMU_AUX_PHYSICAL_SG or so, and add a comment before it that explains that such hardware interfaces are restrictive, or so. Thanks, Ingo