From patchwork Wed Jan 17 17:52:14 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Poirier X-Patchwork-Id: 10170341 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 1998D603ED for ; Wed, 17 Jan 2018 17:54:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0844328583 for ; Wed, 17 Jan 2018 17:54:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EFF422866D; Wed, 17 Jan 2018 17:54:35 +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=unavailable 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 5F1FB28583 for ; Wed, 17 Jan 2018 17:54:35 +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=dVV2LAsR6fWmPmUEQbmUp7SNLnt/s9M4o9BnHvwbvyE=; b=jE9UC8hNt6jBtUwC3EPw7z70hq yseDPY7Fd1mKyaklqsQlkmM7HNHniFI5eFcF5O78bwrSoMX/UKVy28hGcD5zzHh8s/pOedqEdn3PJ pww7cQydsV1SN6SSwq+4uJRFvtlIMI1pKyct63GpUwYnj4txM6UWmPnHDFKZ64YCz2kz9vINvmdr2 IXECqp0d8V+JKhC5nOJh+Qwe01HZI54qOgvJywB13bHGQxxyMq9BK/famZoIGQcHXLMeTml+0D9qD 66omQ+TWkSrKUeYM5BSbmRf7s8UZTKjeNfEJ7Fj0r+sP4FMZpcGko7X3jBZ/YZa/g+24Ra3w55t2h L31z71GQ==; 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 1ebruy-0002xZ-Os; Wed, 17 Jan 2018 17:54:32 +0000 Received: from mail-io0-x244.google.com ([2607:f8b0:4001:c06::244]) by bombadil.infradead.org with esmtps (Exim 4.89 #1 (Red Hat Linux)) id 1ebrtG-0000t1-0v for linux-arm-kernel@lists.infradead.org; Wed, 17 Jan 2018 17:52:50 +0000 Received: by mail-io0-x244.google.com with SMTP id p188so9030253ioe.12 for ; Wed, 17 Jan 2018 09:52:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=5jFdWvQHmBRzHkJxZHbVXWO2q05IMe9m2gaQjutTajQ=; b=DOWC0VB3Nyl+LlXVUWtDKW1wIy3cOw5pY0vpcB6JwInHcx6TX/1d0f+b0IvbEEy8qF jsAtqpYPV6jNqS44+ZG7NwGJs/jPKMqyLH2o4vK475Ta4cBRF0fehJ2WwMfBY4x8jKKL zC0dIZLWkaiQqd9/GMTfOoH/cCu70/gtiWzT4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=5jFdWvQHmBRzHkJxZHbVXWO2q05IMe9m2gaQjutTajQ=; b=EcpaVQjJ7A8zdiPgredBa5nCNGYVq9G0W4S2Yjf1GL6TzOWIRnkkEElpz4vHWn4/fs Z5dhfK9NPstivnIWQmbd/Y56WQRDz1X/XKf4MMdiaprXbHKscboHXWee8LzZ0/SXNnrK ojm8j6TkpQXyEbCan57hNoEJZxhV18hqIrDSQNGA3eDpZ6oFNGVy1DjyHFUERMTrtgdi 8AMeNcf8sEzNQqdqdnbKYHBvkN9/s86YkSyGEx+F27kEt9U+8misjyKDsH2TWPm1OrUl SWYOzZkdnvAlGG7HYO3LQSby0lMqmJ9J7gxZkIylXdK7dxUkwlMuMnQM5DxMQN8io50p +ktQ== X-Gm-Message-State: AKwxytcFzdxYGbnCpPfiZ3GSrh0EYL+6gJ2c6hMwxRYMHhGJT/s0uYjF bbcDeL5KOrnChCTVFtAo7ozTSA== X-Google-Smtp-Source: ACJfBov3XuRHjsjgNBvbwk9yjicP8gem2QebD/WaLPP0qX/AOPCbJYy3GRuXRRsVGIwyv2p0ZOgIcQ== X-Received: by 10.107.9.69 with SMTP id j66mr22528624ioi.91.1516211554768; Wed, 17 Jan 2018 09:52:34 -0800 (PST) Received: from xps15.cg.shawcable.net (S0106002369de4dac.cg.shawcable.net. [68.147.8.254]) by smtp.gmail.com with ESMTPSA id h72sm2694392ioe.61.2018.01.17.09.52.32 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 17 Jan 2018 09:52:33 -0800 (PST) From: Mathieu Poirier To: acme@kernel.org Subject: [PATCH v3 05/10] perf tools: Add support for decoding CoreSight trace data Date: Wed, 17 Jan 2018 10:52:14 -0700 Message-Id: <1516211539-5166-6-git-send-email-mathieu.poirier@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1516211539-5166-1-git-send-email-mathieu.poirier@linaro.org> References: <1516211539-5166-1-git-send-email-mathieu.poirier@linaro.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: kim.phillips@arm.com, peterz@infradead.org, adrian.hunter@intel.com, linux-kernel@vger.kernel.org, alexander.shishkin@linux.intel.com, mingo@redhat.com, mike.leach@arm.com, namhyung@kernel.org, suzuki.poulosi@arm.com, jolsa@redhat.com, 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 Adding functionality to create a CoreSight trace decoder capable of decoding trace data pushed by a client application. Co-authored-by: Tor Jeremiassen Signed-off-by: Mathieu Poirier --- tools/perf/util/cs-etm-decoder/cs-etm-decoder.c | 119 ++++++++++++++++++++++++ 1 file changed, 119 insertions(+) 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 6a4c86b1431f..57b020b0b36f 100644 --- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c +++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c @@ -200,6 +200,121 @@ static void cs_etm_decoder__clear_buffer(struct cs_etm_decoder *decoder) } } +static ocsd_datapath_resp_t +cs_etm_decoder__buffer_packet(struct cs_etm_decoder *decoder, + const ocsd_generic_trace_elem *elem, + const u8 trace_chan_id, + enum cs_etm_sample_type sample_type) +{ + u32 et = 0; + struct int_node *inode = NULL; + + if (decoder->packet_count >= MAX_BUFFER - 1) + return OCSD_RESP_FATAL_SYS_ERR; + + /* Search the RB tree for the cpu associated with this traceID */ + inode = intlist__find(traceid_list, trace_chan_id); + if (!inode) + return OCSD_RESP_FATAL_SYS_ERR; + + et = decoder->tail; + decoder->packet_buffer[et].sample_type = sample_type; + decoder->packet_buffer[et].start_addr = elem->st_addr; + decoder->packet_buffer[et].end_addr = elem->en_addr; + decoder->packet_buffer[et].exc = false; + decoder->packet_buffer[et].exc_ret = false; + decoder->packet_buffer[et].cpu = *((int *)inode->priv); + + /* Wrap around if need be */ + et = (et + 1) & (MAX_BUFFER - 1); + + decoder->tail = et; + decoder->packet_count++; + + if (decoder->packet_count == MAX_BUFFER - 1) + return OCSD_RESP_WAIT; + + return OCSD_RESP_CONT; +} + +static ocsd_datapath_resp_t cs_etm_decoder__gen_trace_elem_printer( + const void *context, + const ocsd_trc_index_t indx __maybe_unused, + const u8 trace_chan_id __maybe_unused, + const ocsd_generic_trace_elem *elem) +{ + ocsd_datapath_resp_t resp = OCSD_RESP_CONT; + struct cs_etm_decoder *decoder = (struct cs_etm_decoder *) context; + + switch (elem->elem_type) { + case OCSD_GEN_TRC_ELEM_UNKNOWN: + break; + case OCSD_GEN_TRC_ELEM_NO_SYNC: + decoder->trace_on = false; + break; + case OCSD_GEN_TRC_ELEM_TRACE_ON: + decoder->trace_on = true; + break; + case OCSD_GEN_TRC_ELEM_INSTR_RANGE: + resp = cs_etm_decoder__buffer_packet(decoder, elem, + trace_chan_id, + CS_ETM_RANGE); + break; + case OCSD_GEN_TRC_ELEM_EXCEPTION: + decoder->packet_buffer[decoder->tail].exc = true; + break; + case OCSD_GEN_TRC_ELEM_EXCEPTION_RET: + decoder->packet_buffer[decoder->tail].exc_ret = true; + break; + case OCSD_GEN_TRC_ELEM_PE_CONTEXT: + case OCSD_GEN_TRC_ELEM_EO_TRACE: + case OCSD_GEN_TRC_ELEM_ADDR_NACC: + case OCSD_GEN_TRC_ELEM_TIMESTAMP: + case OCSD_GEN_TRC_ELEM_CYCLE_COUNT: + case OCSD_GEN_TRC_ELEM_ADDR_UNKNOWN: + case OCSD_GEN_TRC_ELEM_EVENT: + case OCSD_GEN_TRC_ELEM_SWTRACE: + case OCSD_GEN_TRC_ELEM_CUSTOM: + default: + break; + } + + return resp; +} + +static int cs_etm_decoder__create_etm_packet_decoder( + struct cs_etm_trace_params *t_params, + struct cs_etm_decoder *decoder) +{ + const char *decoder_name; + ocsd_etmv4_cfg trace_config_etmv4; + void *trace_config; + u8 csid; + + switch (t_params->protocol) { + case CS_ETM_PROTO_ETMV4i: + cs_etm_decoder__gen_etmv4_config(t_params, &trace_config_etmv4); + decoder_name = OCSD_BUILTIN_DCD_ETMV4I; + trace_config = &trace_config_etmv4; + break; + default: + return -1; + } + + if (ocsd_dt_create_decoder(decoder->dcd_tree, + decoder_name, + OCSD_CREATE_FLG_FULL_DECODER, + trace_config, &csid)) + return -1; + + if (ocsd_dt_set_gen_elem_outfn(decoder->dcd_tree, + cs_etm_decoder__gen_trace_elem_printer, + decoder)) + return -1; + + return 0; +} + static int cs_etm_decoder__create_etm_decoder(struct cs_etm_decoder_params *d_params, struct cs_etm_trace_params *t_params, @@ -208,6 +323,10 @@ cs_etm_decoder__create_etm_decoder(struct cs_etm_decoder_params *d_params, if (d_params->operation == CS_ETM_OPERATION_PRINT) return cs_etm_decoder__create_etm_packet_printer(t_params, decoder); + else if (d_params->operation == CS_ETM_OPERATION_DECODE) + return cs_etm_decoder__create_etm_packet_decoder(t_params, + decoder); + return -1; }