From patchwork Mon Apr 29 15:21:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Clark X-Patchwork-Id: 13647282 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2A11EC25B10 for ; Mon, 29 Apr 2024 15:26:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=S+VxpR6I1cCc36LS2gmmTpxo2/CyD1BGjfgDKdoJeSA=; b=iLw/G99iinb1g/ RUdcXDKtO3JH35mhh13oRDO2b11ulNBiPqg38B7wJESRpKdNmJMtPKaXtlcKhzWaHwllUHyj2hDDi vECYb2NTS4v5Oqqc/pcTkvY50mkrV9s7reSEYnvhEzfRNLXkJ2YFg3ukyupeNTCGuWc2b9z8j9BG0 p4GIJP5aFbVBY/dVb07JtzR0KK88N49AmFVmrTwa2ka1XgqT61jiDi48sOeLhybivoiKXieIqLi91 06ZTQyIlVk8m/ANP03inlJhxmHg5apwy/K2lSMPpcJJsTiYkHFQGKeyNbLXueq0caa9GgCesF+RRN j264HZwR7uMmgiHz1uFQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s1StH-00000003P2T-2Lxt; Mon, 29 Apr 2024 15:26:03 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s1Ssj-00000003Oju-1yvF for linux-arm-kernel@lists.infradead.org; Mon, 29 Apr 2024 15:25:31 +0000 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 AEFB22F4; Mon, 29 Apr 2024 08:25:55 -0700 (PDT) Received: from e127643.broadband (usa-sjc-mx-foss1.foss.arm.com [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id E32693F793; Mon, 29 Apr 2024 08:25:25 -0700 (PDT) From: James Clark To: linux-perf-users@vger.kernel.org, gankulkarni@os.amperecomputing.com, scclevenger@os.amperecomputing.com, coresight@lists.linaro.org, suzuki.poulose@arm.com, mike.leach@linaro.org Cc: James Clark , Alexander Shishkin , Maxime Coquelin , Alexandre Torgue , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Jiri Olsa , Ian Rogers , Adrian Hunter , John Garry , Will Deacon , Leo Yan , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com Subject: [PATCH 13/17] coresight: Pass trace ID map into source enable Date: Mon, 29 Apr 2024 16:21:59 +0100 Message-Id: <20240429152207.479221-15-james.clark@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240429152207.479221-1-james.clark@arm.com> References: <20240429152207.479221-1-james.clark@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240429_082529_713925_80A3737E X-CRM114-Status: GOOD ( 18.63 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This will allow Perf mode to pass in per-sink maps. System sources allocate IDs on probe so they don't use this and it's __maybe_unused. Sysfs mode also has the global map hard coded in various places, so pass in NULL when enabling for sysfs. We could bubble the global map all the way down to where it's used, but it wouldn't have any functional difference, so it's probably not worth the code churn. Signed-off-by: James Clark Reviewed-by: Anshuman Khandual --- drivers/hwtracing/coresight/coresight-dummy.c | 3 ++- drivers/hwtracing/coresight/coresight-etm-perf.c | 3 ++- drivers/hwtracing/coresight/coresight-etm3x-core.c | 10 +++++----- drivers/hwtracing/coresight/coresight-etm4x-core.c | 10 +++++----- drivers/hwtracing/coresight/coresight-stm.c | 3 ++- drivers/hwtracing/coresight/coresight-sysfs.c | 3 ++- drivers/hwtracing/coresight/coresight-tpdm.c | 3 ++- include/linux/coresight.h | 2 +- 8 files changed, 21 insertions(+), 16 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-dummy.c b/drivers/hwtracing/coresight/coresight-dummy.c index ac70c0b491be..1f1b9ad160f6 100644 --- a/drivers/hwtracing/coresight/coresight-dummy.c +++ b/drivers/hwtracing/coresight/coresight-dummy.c @@ -21,7 +21,8 @@ DEFINE_CORESIGHT_DEVLIST(source_devs, "dummy_source"); DEFINE_CORESIGHT_DEVLIST(sink_devs, "dummy_sink"); static int dummy_source_enable(struct coresight_device *csdev, - struct perf_event *event, enum cs_mode mode) + struct perf_event *event, enum cs_mode mode, + __maybe_unused struct coresight_trace_id_map *id_map) { dev_dbg(csdev->dev.parent, "Dummy source enabled\n"); diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c index 25f1f87c90d1..177cecae38d9 100644 --- a/drivers/hwtracing/coresight/coresight-etm-perf.c +++ b/drivers/hwtracing/coresight/coresight-etm-perf.c @@ -496,7 +496,8 @@ static void etm_event_start(struct perf_event *event, int flags) goto fail_end_stop; /* Finally enable the tracer */ - if (source_ops(csdev)->enable(csdev, event, CS_MODE_PERF)) + if (source_ops(csdev)->enable(csdev, event, CS_MODE_PERF, + coresight_trace_id_map_default())) goto fail_disable_path; /* diff --git a/drivers/hwtracing/coresight/coresight-etm3x-core.c b/drivers/hwtracing/coresight/coresight-etm3x-core.c index b21f5ad94e63..b310bdf19038 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm3x-core.c @@ -482,7 +482,8 @@ void etm_release_trace_id(struct etm_drvdata *drvdata) } static int etm_enable_perf(struct coresight_device *csdev, - struct perf_event *event) + struct perf_event *event, + struct coresight_trace_id_map *id_map) { struct etm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); int trace_id; @@ -501,8 +502,7 @@ static int etm_enable_perf(struct coresight_device *csdev, * with perf locks - we know the ID cannot change until perf shuts down * the session */ - trace_id = coresight_trace_id_read_cpu_id(drvdata->cpu, - coresight_trace_id_map_default()); + trace_id = coresight_trace_id_read_cpu_id(drvdata->cpu, id_map); if (!IS_VALID_CS_TRACE_ID(trace_id)) { dev_err(&drvdata->csdev->dev, "Failed to set trace ID for %s on CPU%d\n", dev_name(&drvdata->csdev->dev), drvdata->cpu); @@ -555,7 +555,7 @@ static int etm_enable_sysfs(struct coresight_device *csdev) } static int etm_enable(struct coresight_device *csdev, struct perf_event *event, - enum cs_mode mode) + enum cs_mode mode, struct coresight_trace_id_map *id_map) { int ret; struct etm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); @@ -570,7 +570,7 @@ static int etm_enable(struct coresight_device *csdev, struct perf_event *event, ret = etm_enable_sysfs(csdev); break; case CS_MODE_PERF: - ret = etm_enable_perf(csdev, event); + ret = etm_enable_perf(csdev, event, id_map); break; default: ret = -EINVAL; diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c index d16d6efb26fa..02dbb6c4daf5 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -753,7 +753,8 @@ static int etm4_parse_event_config(struct coresight_device *csdev, } static int etm4_enable_perf(struct coresight_device *csdev, - struct perf_event *event) + struct perf_event *event, + struct coresight_trace_id_map *id_map) { int ret = 0, trace_id; struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); @@ -776,8 +777,7 @@ static int etm4_enable_perf(struct coresight_device *csdev, * with perf locks - we know the ID cannot change until perf shuts down * the session */ - trace_id = coresight_trace_id_read_cpu_id(drvdata->cpu, - coresight_trace_id_map_default()); + trace_id = coresight_trace_id_read_cpu_id(drvdata->cpu, id_map); if (!IS_VALID_CS_TRACE_ID(trace_id)) { dev_err(&drvdata->csdev->dev, "Failed to set trace ID for %s on CPU%d\n", dev_name(&drvdata->csdev->dev), drvdata->cpu); @@ -839,7 +839,7 @@ static int etm4_enable_sysfs(struct coresight_device *csdev) } static int etm4_enable(struct coresight_device *csdev, struct perf_event *event, - enum cs_mode mode) + enum cs_mode mode, struct coresight_trace_id_map *id_map) { int ret; @@ -853,7 +853,7 @@ static int etm4_enable(struct coresight_device *csdev, struct perf_event *event, ret = etm4_enable_sysfs(csdev); break; case CS_MODE_PERF: - ret = etm4_enable_perf(csdev, event); + ret = etm4_enable_perf(csdev, event, id_map); break; default: ret = -EINVAL; diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c index e1c62820dfda..a80ad1de4c23 100644 --- a/drivers/hwtracing/coresight/coresight-stm.c +++ b/drivers/hwtracing/coresight/coresight-stm.c @@ -194,7 +194,8 @@ static void stm_enable_hw(struct stm_drvdata *drvdata) } static int stm_enable(struct coresight_device *csdev, struct perf_event *event, - enum cs_mode mode) + enum cs_mode mode, + __maybe_unused struct coresight_trace_id_map *trace_id) { struct stm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); diff --git a/drivers/hwtracing/coresight/coresight-sysfs.c b/drivers/hwtracing/coresight/coresight-sysfs.c index 1e67cc7758d7..a01c9e54e2ed 100644 --- a/drivers/hwtracing/coresight/coresight-sysfs.c +++ b/drivers/hwtracing/coresight/coresight-sysfs.c @@ -9,6 +9,7 @@ #include #include "coresight-priv.h" +#include "coresight-trace-id.h" /* * Use IDR to map the hash of the source's device name @@ -63,7 +64,7 @@ static int coresight_enable_source_sysfs(struct coresight_device *csdev, */ lockdep_assert_held(&coresight_mutex); if (coresight_get_mode(csdev) != CS_MODE_SYSFS) { - ret = source_ops(csdev)->enable(csdev, data, mode); + ret = source_ops(csdev)->enable(csdev, data, mode, NULL); if (ret) return ret; } diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c index a9708ab0d488..0376ad326a2f 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.c +++ b/drivers/hwtracing/coresight/coresight-tpdm.c @@ -439,7 +439,8 @@ static void __tpdm_enable(struct tpdm_drvdata *drvdata) } static int tpdm_enable(struct coresight_device *csdev, struct perf_event *event, - enum cs_mode mode) + enum cs_mode mode, + __maybe_unused struct coresight_trace_id_map *id_map) { struct tpdm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); diff --git a/include/linux/coresight.h b/include/linux/coresight.h index 7d62b88bfb5c..3a678e5425dc 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -384,7 +384,7 @@ struct coresight_ops_link { struct coresight_ops_source { int (*cpu_id)(struct coresight_device *csdev); int (*enable)(struct coresight_device *csdev, struct perf_event *event, - enum cs_mode mode); + enum cs_mode mode, struct coresight_trace_id_map *id_map); void (*disable)(struct coresight_device *csdev, struct perf_event *event); };