From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760017AbcHEPlW (ORCPT ); Fri, 5 Aug 2016 11:41:22 -0400 Received: from mail-yw0-f176.google.com ([209.85.161.176]:33071 "EHLO mail-yw0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753297AbcHEPlV (ORCPT ); Fri, 5 Aug 2016 11:41:21 -0400 MIME-Version: 1.0 In-Reply-To: <20160804165951.GU6862@twins.programming.kicks-ass.net> References: <1469742143-22245-1-git-send-email-mathieu.poirier@linaro.org> <1469742143-22245-2-git-send-email-mathieu.poirier@linaro.org> <20160804165951.GU6862@twins.programming.kicks-ass.net> From: Mathieu Poirier Date: Fri, 5 Aug 2016 09:41:15 -0600 Message-ID: Subject: Re: [PATCH V3 1/6] perf/core: Adding PMU driver specific configuration To: Peter Zijlstra Cc: Arnaldo Carvalho de Melo , jolsa@kernel.org, Ingo Molnar , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , Alexander Shishkin Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 4 August 2016 at 10:59, Peter Zijlstra wrote: > On Thu, Jul 28, 2016 at 03:42:18PM -0600, Mathieu Poirier wrote: >> This patch somewhat mimics the work done on address filters to >> add the infrastructure needed to pass PMU specific HW >> configuration to the driver before a session starts. > > I'm thinking we want to specify a syntax and validate the string matches > the syntax in the generic code. The syntax is checked in the lexer making sure that nothing other than @cfg or @cfg=config is sent to the kernel. From there validation is done in the PMU driver that implements the set_drv_configs() interface. I am not sure to get you point here - can I ask you to provide more details? Thanks, Mathieu