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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6A523C74A5B for ; Wed, 29 Mar 2023 12:42:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229572AbjC2Mmf (ORCPT ); Wed, 29 Mar 2023 08:42:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51912 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229461AbjC2Mmf (ORCPT ); Wed, 29 Mar 2023 08:42:35 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 94FD2F4; Wed, 29 Mar 2023 05:42:33 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 2E54A61C83; Wed, 29 Mar 2023 12:42:33 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 39CBCC433EF; Wed, 29 Mar 2023 12:42:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1680093752; bh=+ViLwzOwM+bAxSQOSldp0asillAvy/13rCO6C4cxHLw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=vD/uc0UacBov9dyJqj+44dngNUhkBdq3kdh6RmlbAErh6sqQIAASRhxPdo0fJDLaO 5hlLBhpRvnxXuyt35JOyrndA5f8ePiuWDCz7Gal4ZMkRIdj8JgLC0PkKYmozfZWILV G9aYTk3hywwMDvQQfCDrw4TBRLJeYC7fz+h3Vq9RotYyIuEstclTKl7u6Fc0hms94c UKR3JrZzPwrGtrP/adOK5j93yTUFhBvGHJ1obXSNXhlnYNKMb6HUlneyAtsejBE6Eb clQuqaZlaquN4J840nqjA+fEwdy3W9wIzI1Wiz3/a10BMLNekGgAIEzdbBTNrSC3gG DgQeEV9VnGniQ== Received: by quaco.ghostprotocols.net (Postfix, from userid 1000) id 36B804052D; Wed, 29 Mar 2023 09:42:30 -0300 (-03) Date: Wed, 29 Mar 2023 09:42:30 -0300 From: Arnaldo Carvalho de Melo To: Mike Leach Cc: linux-perf-users@vger.kernel.org, linux-arm-kernel@lists.infradead.org, coresight@lists.linaro.org, linux-kernel@vger.kernel.org, suzuki.poulose@arm.com, leo.yan@linaro.org, peterz@infradead.org, mingo@redhat.com, will@kernel.org, john.garry@huawei.com, mark.rutland@arm.com, alexander.shishkin@linux.intel.com, jolsa@redhat.com, namhyung@kernel.org, gankulkarni@os.amperecomputing.com, darren@os.amperecomputing.com, James Clark Subject: Re: [PATCH v8 1/3] perf: cs-etm: Move mapping of Trace ID and cpu into helper function Message-ID: References: <20230329111422.3693-1-mike.leach@linaro.org> <20230329111422.3693-2-mike.leach@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-Url: http://acmel.wordpress.com Precedence: bulk List-ID: X-Mailing-List: linux-perf-users@vger.kernel.org Em Wed, Mar 29, 2023 at 09:41:08AM -0300, Arnaldo Carvalho de Melo escreveu: > Em Wed, Mar 29, 2023 at 12:14:20PM +0100, Mike Leach escreveu: > > The information to associate Trace ID and CPU will be changing. > > > > Drivers will start outputting this as a hardware ID packet in the data > > file which if present will be used in preference to the AUXINFO values. > > CC /tmp/build/perf-tools-next/util/symbol-elf.o > LD /tmp/build/perf-tools-next/util/cs-etm-decoder/perf-in.o > util/cs-etm.c: In function ‘cs_etm__process_auxtrace_info_full’: > util/cs-etm.c:2866:26: error: unused variable ‘inode’ [-Werror=unused-variable] > 2866 | struct int_node *inode; > | ^~~~~ > cc1: all warnings being treated as errors > make[4]: *** [/var/home/acme/git/perf-tools-next/tools/build/Makefile.build:97: /tmp/build/perf-tools-next/util/cs-etm.o] Error 1 > make[4]: *** Waiting for unfinished jobs.... > gmake[3]: *** [/var/home/acme/git/perf-tools-next/tools/build/Makefile.build:140: util] Err > > Trying to fix... Seems simple, the variable isn't used at all, so I added: diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c index f6ca07f68b251274..5fc9c288080b4526 100644 --- a/tools/perf/util/cs-etm.c +++ b/tools/perf/util/cs-etm.c @@ -2863,7 +2863,6 @@ int cs_etm__process_auxtrace_info_full(union perf_event *event, { struct perf_record_auxtrace_info *auxtrace_info = &event->auxtrace_info; struct cs_etm_auxtrace *etm = NULL; - struct int_node *inode; struct perf_record_time_conv *tc = &session->time_conv; int event_header_size = sizeof(struct perf_event_header); int total_size = auxtrace_info->header.size; > > To prepare for this we provide a helper functions to do the individual ID > > mapping, and one to extract the IDs from the completed metadata blocks. > > > > Signed-off-by: Mike Leach > > Reviewed-by: James Clark > > Acked-by: Suzuki K Poulose > > --- > > tools/include/linux/coresight-pmu.h | 5 ++ > > tools/perf/util/cs-etm.c | 91 +++++++++++++++++++---------- > > tools/perf/util/cs-etm.h | 14 ++++- > > 3 files changed, 77 insertions(+), 33 deletions(-) > > > > diff --git a/tools/include/linux/coresight-pmu.h b/tools/include/linux/coresight-pmu.h > > index 6c2fd6cc5a98..db9c7c0abb6a 100644 > > --- a/tools/include/linux/coresight-pmu.h > > +++ b/tools/include/linux/coresight-pmu.h > > @@ -7,9 +7,14 @@ > > #ifndef _LINUX_CORESIGHT_PMU_H > > #define _LINUX_CORESIGHT_PMU_H > > > > +#include > > + > > #define CORESIGHT_ETM_PMU_NAME "cs_etm" > > #define CORESIGHT_ETM_PMU_SEED 0x10 > > > > +/* CoreSight trace ID is currently the bottom 7 bits of the value */ > > +#define CORESIGHT_TRACE_ID_VAL_MASK GENMASK(6, 0) > > + > > /* > > * Below are the definition of bit offsets for perf option, and works as > > * arbitrary values for all ETM versions. > > diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c > > index f65bac5ddbdb..f6ca07f68b25 100644 > > --- a/tools/perf/util/cs-etm.c > > +++ b/tools/perf/util/cs-etm.c > > @@ -196,6 +196,30 @@ int cs_etm__get_pid_fmt(u8 trace_chan_id, u64 *pid_fmt) > > return 0; > > } > > > > +static int cs_etm__map_trace_id(u8 trace_chan_id, u64 *cpu_metadata) > > +{ > > + struct int_node *inode; > > + > > + /* Get an RB node for this CPU */ > > + inode = intlist__findnew(traceid_list, trace_chan_id); > > + > > + /* Something went wrong, no need to continue */ > > + if (!inode) > > + return -ENOMEM; > > + > > + /* > > + * The node for that CPU should not be taken. > > + * Back out if that's the case. > > + */ > > + if (inode->priv) > > + return -EINVAL; > > + > > + /* All good, associate the traceID with the metadata pointer */ > > + inode->priv = cpu_metadata; > > + > > + return 0; > > +} > > + > > void cs_etm__etmq_set_traceid_queue_timestamp(struct cs_etm_queue *etmq, > > u8 trace_chan_id) > > { > > @@ -2804,6 +2828,36 @@ static bool cs_etm__has_virtual_ts(u64 **metadata, int num_cpu) > > return true; > > } > > > > +/* map trace ids to correct metadata block, from information in metadata */ > > +static int cs_etm__map_trace_ids_metadata(int num_cpu, u64 **metadata) > > +{ > > + u64 cs_etm_magic; > > + u8 trace_chan_id; > > + int i, err; > > + > > + for (i = 0; i < num_cpu; i++) { > > + cs_etm_magic = metadata[i][CS_ETM_MAGIC]; > > + switch (cs_etm_magic) { > > + case __perf_cs_etmv3_magic: > > + trace_chan_id = (u8)((metadata[i][CS_ETM_ETMTRACEIDR]) & > > + CORESIGHT_TRACE_ID_VAL_MASK); > > + break; > > + case __perf_cs_etmv4_magic: > > + case __perf_cs_ete_magic: > > + trace_chan_id = (u8)((metadata[i][CS_ETMV4_TRCTRACEIDR]) & > > + CORESIGHT_TRACE_ID_VAL_MASK); > > + break; > > + default: > > + /* unknown magic number */ > > + return -EINVAL; > > + } > > + err = cs_etm__map_trace_id(trace_chan_id, metadata[i]); > > + if (err) > > + return err; > > + } > > + return 0; > > +} > > + > > int cs_etm__process_auxtrace_info_full(union perf_event *event, > > struct perf_session *session) > > { > > @@ -2814,7 +2868,7 @@ int cs_etm__process_auxtrace_info_full(union perf_event *event, > > int event_header_size = sizeof(struct perf_event_header); > > int total_size = auxtrace_info->header.size; > > int priv_size = 0; > > - int num_cpu, trcidr_idx; > > + int num_cpu; > > int err = 0; > > int i, j; > > u64 *ptr = NULL; > > @@ -2853,23 +2907,13 @@ int cs_etm__process_auxtrace_info_full(union perf_event *event, > > cs_etm__create_meta_blk(ptr, &i, > > CS_ETM_PRIV_MAX, > > CS_ETM_NR_TRC_PARAMS_V0); > > - > > - /* The traceID is our handle */ > > - trcidr_idx = CS_ETM_ETMTRACEIDR; > > - > > } else if (ptr[i] == __perf_cs_etmv4_magic) { > > metadata[j] = > > cs_etm__create_meta_blk(ptr, &i, > > CS_ETMV4_PRIV_MAX, > > CS_ETMV4_NR_TRC_PARAMS_V0); > > - > > - /* The traceID is our handle */ > > - trcidr_idx = CS_ETMV4_TRCTRACEIDR; > > } else if (ptr[i] == __perf_cs_ete_magic) { > > metadata[j] = cs_etm__create_meta_blk(ptr, &i, CS_ETE_PRIV_MAX, -1); > > - > > - /* ETE shares first part of metadata with ETMv4 */ > > - trcidr_idx = CS_ETMV4_TRCTRACEIDR; > > } else { > > ui__error("CS ETM Trace: Unrecognised magic number %#"PRIx64". File could be from a newer version of perf.\n", > > ptr[i]); > > @@ -2881,26 +2925,6 @@ int cs_etm__process_auxtrace_info_full(union perf_event *event, > > err = -ENOMEM; > > goto err_free_metadata; > > } > > - > > - /* Get an RB node for this CPU */ > > - inode = intlist__findnew(traceid_list, metadata[j][trcidr_idx]); > > - > > - /* Something went wrong, no need to continue */ > > - if (!inode) { > > - err = -ENOMEM; > > - goto err_free_metadata; > > - } > > - > > - /* > > - * The node for that CPU should not be taken. > > - * Back out if that's the case. > > - */ > > - if (inode->priv) { > > - err = -EINVAL; > > - goto err_free_metadata; > > - } > > - /* All good, associate the traceID with the metadata pointer */ > > - inode->priv = metadata[j]; > > } > > > > /* > > @@ -2994,6 +3018,11 @@ int cs_etm__process_auxtrace_info_full(union perf_event *event, > > if (err) > > goto err_delete_thread; > > > > + /* before aux records are queued, need to map metadata to trace IDs */ > > + err = cs_etm__map_trace_ids_metadata(num_cpu, metadata); > > + if (err) > > + goto err_delete_thread; > > + > > err = cs_etm__queue_aux_records(session); > > if (err) > > goto err_delete_thread; > > diff --git a/tools/perf/util/cs-etm.h b/tools/perf/util/cs-etm.h > > index 98a4f7113d2f..6d3078e042b4 100644 > > --- a/tools/perf/util/cs-etm.h > > +++ b/tools/perf/util/cs-etm.h > > @@ -29,13 +29,17 @@ enum { > > /* > > * Update the version for new format. > > * > > - * New version 1 format adds a param count to the per cpu metadata. > > + * Version 1: format adds a param count to the per cpu metadata. > > * This allows easy adding of new metadata parameters. > > * Requires that new params always added after current ones. > > * Also allows client reader to handle file versions that are different by > > * checking the number of params in the file vs the number expected. > > + * > > + * Version 2: Drivers will use PERF_RECORD_AUX_OUTPUT_HW_ID to output > > + * CoreSight Trace ID. ...TRACEIDR metadata will be set to unused ID. > > */ > > -#define CS_HEADER_CURRENT_VERSION 1 > > +#define CS_HEADER_CURRENT_VERSION 2 > > +#define CS_AUX_HW_ID_VERSION_MIN 2 > > > > /* Beginning of header common to both ETMv3 and V4 */ > > enum { > > @@ -97,6 +101,12 @@ enum { > > CS_ETE_PRIV_MAX > > }; > > > > +/* > > + * Check for valid CoreSight trace ID. If an invalid value is present in the metadata, > > + * then IDs are present in the hardware ID packet in the data file. > > + */ > > +#define CS_IS_VALID_TRACE_ID(id) ((id > 0) && (id < 0x70)) > > + > > /* > > * ETMv3 exception encoding number: > > * See Embedded Trace Macrocell specification (ARM IHI 0014Q) > > -- > > 2.32.0 > > > > -- > > - Arnaldo -- - Arnaldo 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 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 CE58AC74A5B for ; Wed, 29 Mar 2023 12:43:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: 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Received: by quaco.ghostprotocols.net (Postfix, from userid 1000) id 36B804052D; Wed, 29 Mar 2023 09:42:30 -0300 (-03) Date: Wed, 29 Mar 2023 09:42:30 -0300 From: Arnaldo Carvalho de Melo To: Mike Leach Cc: linux-perf-users@vger.kernel.org, linux-arm-kernel@lists.infradead.org, coresight@lists.linaro.org, linux-kernel@vger.kernel.org, suzuki.poulose@arm.com, leo.yan@linaro.org, peterz@infradead.org, mingo@redhat.com, will@kernel.org, john.garry@huawei.com, mark.rutland@arm.com, alexander.shishkin@linux.intel.com, jolsa@redhat.com, namhyung@kernel.org, gankulkarni@os.amperecomputing.com, darren@os.amperecomputing.com, James Clark Subject: Re: [PATCH v8 1/3] perf: cs-etm: Move mapping of Trace ID and cpu into helper function Message-ID: References: <20230329111422.3693-1-mike.leach@linaro.org> <20230329111422.3693-2-mike.leach@linaro.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Url: http://acmel.wordpress.com 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: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org RW0gV2VkLCBNYXIgMjksIDIwMjMgYXQgMDk6NDE6MDhBTSAtMDMwMCwgQXJuYWxkbyBDYXJ2YWxo byBkZSBNZWxvIGVzY3JldmV1Ogo+IEVtIFdlZCwgTWFyIDI5LCAyMDIzIGF0IDEyOjE0OjIwUE0g KzAxMDAsIE1pa2UgTGVhY2ggZXNjcmV2ZXU6Cj4gPiBUaGUgaW5mb3JtYXRpb24gdG8gYXNzb2Np YXRlIFRyYWNlIElEIGFuZCBDUFUgd2lsbCBiZSBjaGFuZ2luZy4KPiA+IAo+ID4gRHJpdmVycyB3 aWxsIHN0YXJ0IG91dHB1dHRpbmcgdGhpcyBhcyBhIGhhcmR3YXJlIElEIHBhY2tldCBpbiB0aGUg ZGF0YQo+ID4gZmlsZSB3aGljaCBpZiBwcmVzZW50IHdpbGwgYmUgdXNlZCBpbiBwcmVmZXJlbmNl IHRvIHRoZSBBVVhJTkZPIHZhbHVlcy4KPiAKPiAgIENDICAgICAgL3RtcC9idWlsZC9wZXJmLXRv b2xzLW5leHQvdXRpbC9zeW1ib2wtZWxmLm8KPiAgIExEICAgICAgL3RtcC9idWlsZC9wZXJmLXRv 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