From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.1 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 31241C433FE for ; Fri, 3 Sep 2021 08:55:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1831B61056 for ; Fri, 3 Sep 2021 08:55:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348422AbhICI4m (ORCPT ); Fri, 3 Sep 2021 04:56:42 -0400 Received: from foss.arm.com ([217.140.110.172]:38782 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234865AbhICI4k (ORCPT ); Fri, 3 Sep 2021 04:56:40 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 1C2D9D6E; Fri, 3 Sep 2021 01:55:41 -0700 (PDT) Received: from [10.57.92.220] (unknown [10.57.92.220]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id DE1CF3F694; Fri, 3 Sep 2021 01:55:38 -0700 (PDT) Subject: Re: [PATCH v2 2/9] perf cs-etm: Initialise architecture based on TRCIDR1 To: James Clark , mathieu.poirier@linaro.org, leo.yan@linaro.org, coresight@lists.linaro.org, linux-perf-users@vger.kernel.org, mike.leach@linaro.org Cc: acme@kernel.org, John Garry , Will Deacon , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20210806134109.1182235-1-james.clark@arm.com> <20210806134109.1182235-3-james.clark@arm.com> From: Suzuki K Poulose Message-ID: Date: Fri, 3 Sep 2021 09:55:37 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 In-Reply-To: <20210806134109.1182235-3-james.clark@arm.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/08/2021 14:41, James Clark wrote: > Currently the architecture is hard coded as ARCH_V8, but from ETMv4.4 > onwards this should be ARCH_AA64. > > Signed-off-by: James Clark > --- > tools/perf/util/cs-etm-decoder/cs-etm-decoder.c | 16 +++++++++++++++- > 1 file changed, 15 insertions(+), 1 deletion(-) > > diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c > index 187c038caa19..787b19642e78 100644 > --- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c > +++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c > @@ -126,6 +126,20 @@ static int cs_etm_decoder__gen_etmv3_config(struct cs_etm_trace_params *params, > return 0; > } > > +#define TRCIDR1_TRCARCHMIN_SHIFT 4 > +#define TRCIDR1_TRCARCHMIN_MASK GENMASK(7, 4) > +#define TRCIDR1_TRCARCHMIN(x) (((x) & TRCIDR1_TRCARCHMIN_MASK) >> TRCIDR1_TRCARCHMIN_SHIFT) minor nit: Please add a blank line here > +static enum _ocsd_arch_version cs_etm_decoder__get_etmv4_arch_ver(u32 reg_idr1) > +{ > + /* > + * For ETMv4 if the trace minor version is 4 or more then we can assume > + * the architecture is ARCH_AA64 rather than just V8. > + * ARCH_V8 = V8 architecture > + * ARCH_AA64 = Min v8r3 plus additional AA64 PE features Does this need to be >= 3 then, to be accurate ? The comment "reads", minimum v8.3 and any additional features. Otherwise looks good to me. Suzuki