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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,T_DKIMWL_WL_HIGH,USER_AGENT_GIT autolearn=ham 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 B3BD9C0650F for ; Tue, 11 Jun 2019 19:03:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8537821841 for ; Tue, 11 Jun 2019 19:03:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1560279794; bh=1Dv8CzymVwIcmwV7LnpzwdGNkbxGgtqUnw5p71uxSZk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ONyjkBELUBR6sDTNUmadhBj4W8nPAa1yCKwrb2GKp0jExF4NmccPrBIx7n22TmjJk 5LQ1+B5RnKkQxQW6Gu7TbBKr3QsDZEKPHEoQFLX3LjLgc5RcEKWva3vY2x1zV9QdCn A3eKLOL4yYucv0UmhtvS9M/JH+e9Idwgl3TYAb3k= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392518AbfFKTDN (ORCPT ); Tue, 11 Jun 2019 15:03:13 -0400 Received: from mail.kernel.org ([198.145.29.99]:39346 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392492AbfFKTDL (ORCPT ); Tue, 11 Jun 2019 15:03:11 -0400 Received: from quaco.ghostprotocols.net (unknown [179.97.35.11]) (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 B9C762183E; Tue, 11 Jun 2019 19:03:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1560279790; bh=1Dv8CzymVwIcmwV7LnpzwdGNkbxGgtqUnw5p71uxSZk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xJcpKlHjOPklJNiAfj+AjS+42sPurfRZDktMdZnwJ6/EPm8MkGyFLtbQwaqq6Yghz UXwnlJ+vjAsL8Tn8BniicpMfOeqsUzuZzttG7qn2YDWtMB3HgtkDzjWsCzzxrRUKyz 2nsWpr4qq2JHPENgYWFSoxueILBmySi9W7Uibodw= From: Arnaldo Carvalho de Melo To: Ingo Molnar , Thomas Gleixner Cc: Jiri Olsa , Namhyung Kim , Clark Williams , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Mathieu Poirier , Leo Yan , Alexander Shishkin , Jiri Olsa , Peter Zijlstra , Suzuki Poulouse , coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, Arnaldo Carvalho de Melo Subject: [PATCH 51/85] perf cs-etm: Linking PE contextID with perf thread mechanic Date: Tue, 11 Jun 2019 15:58:37 -0300 Message-Id: <20190611185911.11645-52-acme@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190611185911.11645-1-acme@kernel.org> References: <20190611185911.11645-1-acme@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Mathieu Poirier Link contextID packets received from the decoder with the perf tool thread mechanic so that we know the specifics of the process currently executing. Signed-off-by: Mathieu Poirier Tested-by: Leo Yan Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Suzuki Poulouse Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/20190524173508.29044-16-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo --- .../perf/util/cs-etm-decoder/cs-etm-decoder.c | 20 ++++++++++++ tools/perf/util/cs-etm.c | 32 +++++++++++++++---- tools/perf/util/cs-etm.h | 10 ++++++ 3 files changed, 56 insertions(+), 6 deletions(-) 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 87264b79de0e..ce85e52f989c 100644 --- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c +++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c @@ -402,6 +402,24 @@ cs_etm_decoder__buffer_exception_ret(struct cs_etm_packet_queue *queue, CS_ETM_EXCEPTION_RET); } +static ocsd_datapath_resp_t +cs_etm_decoder__set_tid(struct cs_etm_queue *etmq, + const ocsd_generic_trace_elem *elem, + const uint8_t trace_chan_id) +{ + pid_t tid; + + /* Ignore PE_CONTEXT packets that don't have a valid contextID */ + if (!elem->context.ctxt_id_valid) + return OCSD_RESP_CONT; + + tid = elem->context.context_id; + if (cs_etm__etmq_set_tid(etmq, tid, trace_chan_id)) + return OCSD_RESP_FATAL_SYS_ERR; + + 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, @@ -440,6 +458,8 @@ static ocsd_datapath_resp_t cs_etm_decoder__gen_trace_elem_printer( trace_chan_id); break; case OCSD_GEN_TRC_ELEM_PE_CONTEXT: + resp = cs_etm_decoder__set_tid(etmq, elem, trace_chan_id); + break; case OCSD_GEN_TRC_ELEM_ADDR_NACC: case OCSD_GEN_TRC_ELEM_TIMESTAMP: case OCSD_GEN_TRC_ELEM_CYCLE_COUNT: diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c index afc2491f9f2a..17adf554b679 100644 --- a/tools/perf/util/cs-etm.c +++ b/tools/perf/util/cs-etm.c @@ -907,13 +907,8 @@ cs_etm__get_trace(struct cs_etm_queue *etmq) } static void cs_etm__set_pid_tid_cpu(struct cs_etm_auxtrace *etm, - struct auxtrace_queue *queue, struct cs_etm_traceid_queue *tidq) { - /* CPU-wide tracing isn't supported yet */ - if (queue->tid == -1) - return; - if ((!tidq->thread) && (tidq->tid != -1)) tidq->thread = machine__find_thread(etm->machine, -1, tidq->tid); @@ -922,6 +917,31 @@ static void cs_etm__set_pid_tid_cpu(struct cs_etm_auxtrace *etm, tidq->pid = tidq->thread->pid_; } +int cs_etm__etmq_set_tid(struct cs_etm_queue *etmq, + pid_t tid, u8 trace_chan_id) +{ + int cpu, err = -EINVAL; + struct cs_etm_auxtrace *etm = etmq->etm; + struct cs_etm_traceid_queue *tidq; + + tidq = cs_etm__etmq_get_traceid_queue(etmq, trace_chan_id); + if (!tidq) + return err; + + if (cs_etm__get_cpu(trace_chan_id, &cpu) < 0) + return err; + + err = machine__set_current_tid(etm->machine, cpu, tid, tid); + if (err) + return err; + + tidq->tid = tid; + thread__zput(tidq->thread); + + cs_etm__set_pid_tid_cpu(etm, tidq); + return 0; +} + static int cs_etm__synth_instruction_sample(struct cs_etm_queue *etmq, struct cs_etm_traceid_queue *tidq, u64 addr, u64 period) @@ -1866,7 +1886,7 @@ static int cs_etm__process_timeless_queues(struct cs_etm_auxtrace *etm, continue; if ((tid == -1) || (tidq->tid == tid)) { - cs_etm__set_pid_tid_cpu(etm, queue, tidq); + cs_etm__set_pid_tid_cpu(etm, tidq); cs_etm__run_decoder(etmq); } } diff --git a/tools/perf/util/cs-etm.h b/tools/perf/util/cs-etm.h index f16082d37ab5..b2a7628620bf 100644 --- a/tools/perf/util/cs-etm.h +++ b/tools/perf/util/cs-etm.h @@ -181,6 +181,8 @@ struct cs_etm_packet_queue { int cs_etm__process_auxtrace_info(union perf_event *event, struct perf_session *session); int cs_etm__get_cpu(u8 trace_chan_id, int *cpu); +int cs_etm__etmq_set_tid(struct cs_etm_queue *etmq, + pid_t tid, u8 trace_chan_id); struct cs_etm_packet_queue *cs_etm__etmq_get_packet_queue(struct cs_etm_queue *etmq, u8 trace_chan_id); #else @@ -197,6 +199,14 @@ static inline int cs_etm__get_cpu(u8 trace_chan_id __maybe_unused, return -1; } +static inline int cs_etm__etmq_set_tid( + struct cs_etm_queue *etmq __maybe_unused, + pid_t tid __maybe_unused, + u8 trace_chan_id __maybe_unused) +{ + return -1; +} + static inline struct cs_etm_packet_queue *cs_etm__etmq_get_packet_queue( struct cs_etm_queue *etmq __maybe_unused, u8 trace_chan_id __maybe_unused) -- 2.20.1