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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 D1819C433DB for ; Tue, 9 Feb 2021 10:10:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 997DB64E8C for ; Tue, 9 Feb 2021 10:10:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231289AbhBIKKJ (ORCPT ); Tue, 9 Feb 2021 05:10:09 -0500 Received: from foss.arm.com ([217.140.110.172]:48690 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231229AbhBIKAJ (ORCPT ); Tue, 9 Feb 2021 05:00:09 -0500 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 C6FF2106F; Tue, 9 Feb 2021 01:59:23 -0800 (PST) Received: from e121896.arm.com (unknown [10.57.44.191]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 47FD33F73B; Tue, 9 Feb 2021 01:59:20 -0800 (PST) From: James Clark To: coresight@lists.linaro.org Cc: al.grant@arm.com, branislav.rankov@arm.com, denik@chromium.org, James Clark , John Garry , Will Deacon , Mathieu Poirier , Leo Yan , Mike Leach , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH 2/5] perf cs-etm: Only search timestamp in current sample's queue. Date: Tue, 9 Feb 2021 11:58:54 +0200 Message-Id: <20210209095857.28419-3-james.clark@arm.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20210209095857.28419-1-james.clark@arm.com> References: <20210209095857.28419-1-james.clark@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Change initial timestamp search to only operate on the queue related to the current event. In a later change the bounds of the aux record will also be used to reset the decoder and the record is only relevant to a single queue. This doesn't work --per-thread mode where cpu == -1 so a further change will be required. Also this change makes some files that had coresight data but didn't syntesise any events start working and generating events. I'm not sure of the reason for that. I'd expect this change to only affect the ordering of events. Signed-off-by: James Clark --- tools/perf/util/cs-etm.c | 34 ++++++++++++++++++++-------------- 1 file changed, 20 insertions(+), 14 deletions(-) diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c index 440001cdd3b8..9ebe43d60d1e 100644 --- a/tools/perf/util/cs-etm.c +++ b/tools/perf/util/cs-etm.c @@ -97,7 +97,7 @@ struct cs_etm_queue { /* RB tree for quick conversion between traceID and metadata pointers */ static struct intlist *traceid_list; -static int cs_etm__update_queues(struct cs_etm_auxtrace *etm); +static int cs_etm__update_queues(struct cs_etm_auxtrace *etm, int cpu); static int cs_etm__process_queues(struct cs_etm_auxtrace *etm); static int cs_etm__process_timeless_queues(struct cs_etm_auxtrace *etm, pid_t tid); @@ -524,7 +524,7 @@ static void cs_etm__dump_event(struct cs_etm_auxtrace *etm, static int cs_etm__flush_events(struct perf_session *session, struct perf_tool *tool) { - int ret; + //int ret; struct cs_etm_auxtrace *etm = container_of(session->auxtrace, struct cs_etm_auxtrace, auxtrace); @@ -534,10 +534,12 @@ static int cs_etm__flush_events(struct perf_session *session, if (!tool->ordered_events) return -EINVAL; - ret = cs_etm__update_queues(etm); + // TODO: does this need to be here? It is already called in cs_etm__process_event + // when the aux records are available. + //ret = cs_etm__update_queues(etm); - if (ret < 0) - return ret; + //if (ret < 0) + // return ret; if (etm->timeless_decoding) return cs_etm__process_timeless_queues(etm, -1); @@ -851,10 +853,7 @@ static int cs_etm__setup_queue(struct cs_etm_auxtrace *etm, etmq->queue_nr = queue_nr; etmq->offset = 0; - if (etm->timeless_decoding) - return 0; - else - return cs_etm__seach_first_timestamp(etmq); + return 0; } static int cs_etm__setup_queues(struct cs_etm_auxtrace *etm) @@ -874,14 +873,20 @@ static int cs_etm__setup_queues(struct cs_etm_auxtrace *etm) return 0; } -static int cs_etm__update_queues(struct cs_etm_auxtrace *etm) +static int cs_etm__update_queues(struct cs_etm_auxtrace *etm, int cpu) { + int ret; if (etm->queues.new_data) { etm->queues.new_data = false; - return cs_etm__setup_queues(etm); + ret = cs_etm__setup_queues(etm); + if (ret) + return ret; } - return 0; + if (!etm->timeless_decoding) + return cs_etm__seach_first_timestamp(etm->queues.queue_array[cpu].priv); + else + return 0; } static inline @@ -2358,8 +2363,9 @@ static int cs_etm__process_event(struct perf_session *session, else timestamp = 0; - if (timestamp || etm->timeless_decoding) { - err = cs_etm__update_queues(etm); + if ((timestamp || etm->timeless_decoding) + && event->header.type == PERF_RECORD_AUX) { + err = cs_etm__update_queues(etm, sample->cpu); if (err) return err; } -- 2.28.0