From patchwork Tue Jan 23 13:12:42 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnaldo Carvalho de Melo X-Patchwork-Id: 10180245 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id EF4ED6019D for ; Tue, 23 Jan 2018 13:15:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DB1901FF65 for ; Tue, 23 Jan 2018 13:15:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CFC98203B9; Tue, 23 Jan 2018 13:15:54 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 20C471FF65 for ; Tue, 23 Jan 2018 13:15:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=/ODVk5T5xjaM3vu5909PvxUEv8r1Ul1oPVXbaYC7QcY=; b=QN369dONBdamIKt2OXrE4UTv/l QzACLJiWXUpCtt92h9/uH2pvG76xcnaLFVJH8CQ584wmZicofhyfu93W7bL+eahDVvXar09ycouPx vynv/ysSNuscHMJ/YyvnTo/kT7s6oIEijRlTaOh/myO4vh0GTVgQzGErLjbeEQdmdUAF6G16Ctu1q WarhPDbl4CYCkYzuKAobcOe6WogvWwI4gGFpu9nS07zBBFmb/837l4PFo0I32rmWGCA1LNYqMGfFi 5Ttr1HT14z/Bsb0gdwwkPCzanZpIpTuczGHuVUewcN4xMqwbINCAoQw+F5e1z81kFKJTYSdmg0hWu 3PccMAtw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.89 #1 (Red Hat Linux)) id 1edyQZ-0004UN-EO; Tue, 23 Jan 2018 13:15:51 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.89 #1 (Red Hat Linux)) id 1edyPD-0001lM-3d for linux-arm-kernel@lists.infradead.org; Tue, 23 Jan 2018 13:14:31 +0000 Received: from jouet.infradead.org (unknown [179.97.41.186]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9D2B62178F; Tue, 23 Jan 2018 13:14:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9D2B62178F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=acme@kernel.org From: Arnaldo Carvalho de Melo To: Ingo Molnar Subject: [PATCH 34/43] pert tools: Add queue management functionality Date: Tue, 23 Jan 2018 10:12:42 -0300 Message-Id: <20180123131251.28197-35-acme@kernel.org> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180123131251.28197-1-acme@kernel.org> References: <20180123131251.28197-1-acme@kernel.org> X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Arnaldo Carvalho de Melo , Kim Phillips , Mathieu Poirier , Suzuki Poulouse , Alexander Shishkin , linux-kernel@vger.kernel.org, Adrian Hunter , linux-perf-users@vger.kernel.org, Peter Zijlstra , Mike Leach , Namhyung Kim , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Mathieu Poirier Add functionatlity to setup trace queues so that traces associated with CoreSight auxtrace events found in the perf.data file can be classified properly. The decoder and memory callback associated with each queue are then used to decode the traces that have been assigned to that queue. Co-authored-by: Tor Jeremiassen Signed-off-by: Mathieu Poirier Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Kim Phillips Cc: Mike Leach Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Suzuki Poulouse Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1516211539-5166-8-git-send-email-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/cs-etm.c | 208 ++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 204 insertions(+), 4 deletions(-) diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c index cad429ce3c00..83eb676274b5 100644 --- a/tools/perf/util/cs-etm.c +++ b/tools/perf/util/cs-etm.c @@ -196,15 +196,215 @@ static void cs_etm__free(struct perf_session *session) zfree(&aux); } +static u32 cs_etm__mem_access(struct cs_etm_queue *etmq, u64 address, + size_t size, u8 *buffer) +{ + u8 cpumode; + u64 offset; + int len; + struct thread *thread; + struct machine *machine; + struct addr_location al; + + if (!etmq) + return -1; + + machine = etmq->etm->machine; + if (address >= etmq->etm->kernel_start) + cpumode = PERF_RECORD_MISC_KERNEL; + else + cpumode = PERF_RECORD_MISC_USER; + + thread = etmq->thread; + if (!thread) { + if (cpumode != PERF_RECORD_MISC_KERNEL) + return -EINVAL; + thread = etmq->etm->unknown_thread; + } + + thread__find_addr_map(thread, cpumode, MAP__FUNCTION, address, &al); + + if (!al.map || !al.map->dso) + return 0; + + if (al.map->dso->data.status == DSO_DATA_STATUS_ERROR && + dso__data_status_seen(al.map->dso, DSO_DATA_STATUS_SEEN_ITRACE)) + return 0; + + offset = al.map->map_ip(al.map, address); + + map__load(al.map); + + len = dso__data_read_offset(al.map->dso, machine, offset, buffer, size); + + if (len <= 0) + return 0; + + return len; +} + +static struct cs_etm_queue *cs_etm__alloc_queue(struct cs_etm_auxtrace *etm, + unsigned int queue_nr) +{ + int i; + struct cs_etm_decoder_params d_params; + struct cs_etm_trace_params *t_params; + struct cs_etm_queue *etmq; + + etmq = zalloc(sizeof(*etmq)); + if (!etmq) + return NULL; + + etmq->event_buf = malloc(PERF_SAMPLE_MAX_SIZE); + if (!etmq->event_buf) + goto out_free; + + etmq->etm = etm; + etmq->queue_nr = queue_nr; + etmq->pid = -1; + etmq->tid = -1; + etmq->cpu = -1; + + /* Use metadata to fill in trace parameters for trace decoder */ + t_params = zalloc(sizeof(*t_params) * etm->num_cpu); + + if (!t_params) + goto out_free; + + for (i = 0; i < etm->num_cpu; i++) { + t_params[i].protocol = CS_ETM_PROTO_ETMV4i; + t_params[i].etmv4.reg_idr0 = etm->metadata[i][CS_ETMV4_TRCIDR0]; + t_params[i].etmv4.reg_idr1 = etm->metadata[i][CS_ETMV4_TRCIDR1]; + t_params[i].etmv4.reg_idr2 = etm->metadata[i][CS_ETMV4_TRCIDR2]; + t_params[i].etmv4.reg_idr8 = etm->metadata[i][CS_ETMV4_TRCIDR8]; + t_params[i].etmv4.reg_configr = + etm->metadata[i][CS_ETMV4_TRCCONFIGR]; + t_params[i].etmv4.reg_traceidr = + etm->metadata[i][CS_ETMV4_TRCTRACEIDR]; + } + + /* Set decoder parameters to simply print the trace packets */ + d_params.packet_printer = cs_etm__packet_dump; + d_params.operation = CS_ETM_OPERATION_DECODE; + d_params.formatted = true; + d_params.fsyncs = false; + d_params.hsyncs = false; + d_params.frame_aligned = true; + d_params.data = etmq; + + etmq->decoder = cs_etm_decoder__new(etm->num_cpu, &d_params, t_params); + + zfree(&t_params); + + if (!etmq->decoder) + goto out_free; + + /* + * Register a function to handle all memory accesses required by + * the trace decoder library. + */ + if (cs_etm_decoder__add_mem_access_cb(etmq->decoder, + 0x0L, ((u64) -1L), + cs_etm__mem_access)) + goto out_free_decoder; + + etmq->offset = 0; + + return etmq; + +out_free_decoder: + cs_etm_decoder__free(etmq->decoder); +out_free: + zfree(&etmq->event_buf); + free(etmq); + + return NULL; +} + +static int cs_etm__setup_queue(struct cs_etm_auxtrace *etm, + struct auxtrace_queue *queue, + unsigned int queue_nr) +{ + struct cs_etm_queue *etmq = queue->priv; + + if (list_empty(&queue->head) || etmq) + return 0; + + etmq = cs_etm__alloc_queue(etm, queue_nr); + + if (!etmq) + return -ENOMEM; + + queue->priv = etmq; + + if (queue->cpu != -1) + etmq->cpu = queue->cpu; + + etmq->tid = queue->tid; + + return 0; +} + +static int cs_etm__setup_queues(struct cs_etm_auxtrace *etm) +{ + unsigned int i; + int ret; + + for (i = 0; i < etm->queues.nr_queues; i++) { + ret = cs_etm__setup_queue(etm, &etm->queues.queue_array[i], i); + if (ret) + return ret; + } + + return 0; +} + +static int cs_etm__update_queues(struct cs_etm_auxtrace *etm) +{ + if (etm->queues.new_data) { + etm->queues.new_data = false; + return cs_etm__setup_queues(etm); + } + + return 0; +} + static int cs_etm__process_event(struct perf_session *session, union perf_event *event, struct perf_sample *sample, struct perf_tool *tool) { - (void) session; - (void) event; - (void) sample; - (void) tool; + int err = 0; + u64 timestamp; + struct cs_etm_auxtrace *etm = container_of(session->auxtrace, + struct cs_etm_auxtrace, + auxtrace); + + /* Keep compiler happy */ + (void)event; + + if (dump_trace) + return 0; + + if (!tool->ordered_events) { + pr_err("CoreSight ETM Trace requires ordered events\n"); + return -EINVAL; + } + + if (!etm->timeless_decoding) + return -EINVAL; + + if (sample->time && (sample->time != (u64) -1)) + timestamp = sample->time; + else + timestamp = 0; + + if (timestamp || etm->timeless_decoding) { + err = cs_etm__update_queues(etm); + if (err) + return err; + } + return 0; }