Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752554AbaJVOXu (ORCPT ); Wed, 22 Oct 2014 10:23:50 -0400 Received: from casper.infradead.org ([85.118.1.10]:58495 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751296AbaJVOXt (ORCPT ); Wed, 22 Oct 2014 10:23:49 -0400 Date: Wed, 22 Oct 2014 16:23:47 +0200 From: Peter Zijlstra To: Alexander Shishkin Cc: Ingo Molnar , linux-kernel@vger.kernel.org, Robert Richter , Frederic Weisbecker , Mike Galbraith , Paul Mackerras , Stephane Eranian , Andi Kleen , kan.liang@intel.com, adrian.hunter@intel.com, acme@infradead.org Subject: Re: [PATCH v5 12/20] x86: perf: intel_pt: Intel PT PMU driver Message-ID: <20141022142347.GR12706@worktop.programming.kicks-ass.net> References: <1413207948-28202-1-git-send-email-alexander.shishkin@linux.intel.com> <1413207948-28202-13-git-send-email-alexander.shishkin@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1413207948-28202-13-git-send-email-alexander.shishkin@linux.intel.com> User-Agent: Mutt/1.5.22.1 (2013-10-16) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Oct 13, 2014 at 04:45:40PM +0300, Alexander Shishkin wrote: > +/* > + * Capabilities of Intel PT hardware, such as number of address bits or > + * supported output schemes, are cached and exported to userspace as "caps" > + * attribute group of pt pmu device > + * (/sys/bus/event_source/devices/intel_pt/caps/) so that userspace can store > + * relevant bits together with intel_pt traces. > + */ Does it make sense to use that AUX record variable data thing for this instead -- much like what the ARM folks wanted? -- 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/