From nobody Thu Apr 9 03:31:37 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E446CC4332F for ; Tue, 1 Nov 2022 16:32:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231183AbiKAQcf (ORCPT ); Tue, 1 Nov 2022 12:32:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35108 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230301AbiKAQbi (ORCPT ); Tue, 1 Nov 2022 12:31:38 -0400 Received: from mail-wr1-x434.google.com (mail-wr1-x434.google.com [IPv6:2a00:1450:4864:20::434]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A7C6D1CB26 for ; Tue, 1 Nov 2022 09:31:37 -0700 (PDT) Received: by mail-wr1-x434.google.com with SMTP id bk15so20854322wrb.13 for ; Tue, 01 Nov 2022 09:31:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=references:in-reply-to:message-id:date:subject:cc:to:from:from:to :cc:subject:date:message-id:reply-to; bh=/OkoZY2NT7ICxt6pxMECbhZ/ZuX+9qnqpKwLzS1JpjA=; b=EhKSmM7wPBsoMr34pTYH6e/an7N4hbVBb7+MUj8exfJTgPvysY4/RZ/sDw+5OrBp1p EynSFNVHCstaJbQYy2hP8Q7iA4BNFO8Qqeqth5aS0bVBLkskG/uYguNwOC9a8Q4YisQE dNbMTLuWaz1AWw2EzmmCfquCOG7n0z3+B/z9biojkID7rdx+Fl9abdhOKSUelYVcJGvY lGKrxIyztTx4DtiWTH8bPyeK93ov/+WlRt8zkm+qWoJ2f0oTSc6yIzOOuc5hEisQFouO ISJjntj9pUl484uzl2EoFCqW/83vLno6cGnH7KOx965AsNVq/1uX84YS8DSnu+UFvJH+ FReQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=references:in-reply-to:message-id:date:subject:cc:to:from :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=/OkoZY2NT7ICxt6pxMECbhZ/ZuX+9qnqpKwLzS1JpjA=; b=VCh/sbljnWo5Ury9oVYnNBYNXWwu74s2ZkwD5fh34RegltlYu1/JF1jHefPxfL4bT6 QVRhai2tS3qiI7miRffMPS/NJk2xoLQdbsFsyWSLfXOdiiSZ3EwyPPnO2oqDAgqqYp6M 68t776XWfITfcxoQuvNjTZa5v1HZJ7iG8VSSUTxWRbfQJq4Mluhar7zYwagQydqXoTVB f/NtZWPg5wan55SkC+bHQMH0SHZpOFOdcO/qMGP50LI4BUD+a2xQQQDdlIL4Rr/wLtS9 7jM84X8EeDBtD64QoVjtKUjBLFgrtLrUJKX56zgTqMgzvWmMQsvS77in5pHhCHKNaC+T B3Hw== X-Gm-Message-State: ACrzQf0rWC9sP77Ps+Nkc2FfF2MgBECTgmuFjUYzdjHM4yIHKw/1E3xT kxCxzP3AFdLCYrwGfa9AGWVxwA== X-Google-Smtp-Source: AMsMyM77kln0fy1pQKA4tkqa0x+IGaKF48rLr+qQuFCXC+pvHrgYTw/Zh+Allkx6uCVtggLlSPQBWA== X-Received: by 2002:a5d:5d09:0:b0:236:c650:e449 with SMTP id ch9-20020a5d5d09000000b00236c650e449mr8682046wrb.406.1667320296126; Tue, 01 Nov 2022 09:31:36 -0700 (PDT) Received: from linaro.org ([2a00:23c5:6809:2201:e844:18b6:fc5:bbc9]) by smtp.gmail.com with ESMTPSA id bu15-20020a056000078f00b0022ac1be009esm8339844wrb.16.2022.11.01.09.31.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Nov 2022 09:31:35 -0700 (PDT) From: Mike Leach To: coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: mathieu.poirier@linaro.org, suzuki.poulose@arm.com, peterz@infradead.org, mingo@redhat.com, acme@kernel.org, linux-perf-users@vger.kernel.org, leo.yan@linaro.org, quic_jinlmao@quicinc.com, Mike Leach Subject: [PATCH v5 13/14] coresight: events: PERF_RECORD_AUX_OUTPUT_HW_ID used for Trace ID Date: Tue, 1 Nov 2022 16:31:02 +0000 Message-Id: <20221101163103.17921-14-mike.leach@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221101163103.17921-1-mike.leach@linaro.org> References: <20221101163103.17921-1-mike.leach@linaro.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Use the perf_report_aux_output_id() call to output the CoreSight trace ID and associated CPU as a PERF_RECORD_AUX_OUTPUT_HW_ID record in the perf.data file. Signed-off-by: Mike Leach Reviewed-by: Suzuki K Poulose --- drivers/hwtracing/coresight/coresight-etm-perf.c | 7 +++++++ include/linux/coresight-pmu.h | 14 ++++++++++++++ 2 files changed, 21 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwt= racing/coresight/coresight-etm-perf.c index 6166f716a6ac..59a2ad95c1dc 100644 --- a/drivers/hwtracing/coresight/coresight-etm-perf.c +++ b/drivers/hwtracing/coresight/coresight-etm-perf.c @@ -4,6 +4,7 @@ * Author: Mathieu Poirier */ =20 +#include #include #include #include @@ -448,6 +449,7 @@ static void etm_event_start(struct perf_event *event, i= nt flags) struct perf_output_handle *handle =3D &ctxt->handle; struct coresight_device *sink, *csdev =3D per_cpu(csdev_src, cpu); struct list_head *path; + u64 hw_id; =20 if (!csdev) goto fail; @@ -493,6 +495,11 @@ static void etm_event_start(struct perf_event *event, = int flags) if (source_ops(csdev)->enable(csdev, event, CS_MODE_PERF)) goto fail_disable_path; =20 + /* output cpu / trace ID in perf record */ + hw_id =3D FIELD_PREP(CS_AUX_HW_ID_VERSION_MASK, CS_AUX_HW_ID_CURR_VERSION= ) | + FIELD_PREP(CS_AUX_HW_ID_TRACE_ID_MASK, coresight_trace_id_read_cpu_id(cp= u)); + perf_report_aux_output_id(event, hw_id); + out: /* Tell the perf core the event is alive */ event->hw.state =3D 0; diff --git a/include/linux/coresight-pmu.h b/include/linux/coresight-pmu.h index 624f4843453e..51ac441a37c3 100644 --- a/include/linux/coresight-pmu.h +++ b/include/linux/coresight-pmu.h @@ -7,6 +7,8 @@ #ifndef _LINUX_CORESIGHT_PMU_H #define _LINUX_CORESIGHT_PMU_H =20 +#include + #define CORESIGHT_ETM_PMU_NAME "cs_etm" =20 /* @@ -43,4 +45,16 @@ #define ETM4_CFG_BIT_RETSTK 12 #define ETM4_CFG_BIT_VMID_OPT 15 =20 +/* + * Interpretation of the PERF_RECORD_AUX_OUTPUT_HW_ID payload. + * Used to associate a CPU with the CoreSight Trace ID. + * [07:00] - Trace ID - uses 8 bits to make value easy to read in file. + * [59:08] - Unused (SBZ) + * [63:60] - Version + */ +#define CS_AUX_HW_ID_TRACE_ID_MASK GENMASK_ULL(7, 0) +#define CS_AUX_HW_ID_VERSION_MASK GENMASK_ULL(63, 60) + +#define CS_AUX_HW_ID_CURR_VERSION 0 + #endif --=20 2.17.1