From patchwork Thu May 11 18:04:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Bristot de Oliveira X-Patchwork-Id: 13238336 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 B6F6DC7EE2A for ; Thu, 11 May 2023 18:06:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239224AbjEKSF7 (ORCPT ); Thu, 11 May 2023 14:05:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60302 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239192AbjEKSFq (ORCPT ); Thu, 11 May 2023 14:05:46 -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 0F10F7EE8; Thu, 11 May 2023 11:05:17 -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 C69B36508A; Thu, 11 May 2023 18:04:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 230A2C433EF; Thu, 11 May 2023 18:04:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1683828294; bh=Lo8FZAWJl35tTJ74PxG2G+/6DGoIbw32r9OQUCYExV4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gDAaOvOXleWWT2ML7LXmA8ekn0u/RfTKJUzNBlMz6T14g2GBEVRy3Ry9FUjyV037G iTF7Z4RFxIecX2JsMnOy7QWzL2y3ixKppJK6/kGZzuxVtVuvyf8KUJ1yMWdwHp5nm8 4egfFbvbUO7ZoAPvrm2DlJBcfhHrkymxgLnX2m8LTPrR3C0hcp0eaSVIcXu0Olpcpj 3rEM2lQ/nuLOsWnSSTPVedmj93CKQWNGlPmkLNoPpSl9XsA9QXuOLKZFm9t6Rbs66/ cGgnIoyo2fw4BkIm+FnKQE7EVcjg+3GxW8mrzvwN8mZdCrU3H1wPmS/a0HTLrdWahy fUe7c6w4lFnsw== From: Daniel Bristot de Oliveira To: linux-trace-devel@vger.kernel.org, Steven Rostedt Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Juri Lelli , William White , Daniel Bristot de Oliveira , Masami Hiramatsu , Jonathan Corbet Subject: [PATCH 7/8] rtla: Start the tracers after creating all instances Date: Thu, 11 May 2023 20:04:25 +0200 Message-Id: <26d837baec9e9e261a1352fba6ffe9be8967ba25.1683827510.git.bristot@kernel.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-trace-devel@vger.kernel.org Group all start tracing after finishing creating all instances. The tracing instance starts first for the case of hitting a stop tracing while enabling other instances. The trace instance is the one with most valuable information. Cc: Steven Rostedt Cc: Daniel Bristot de Oliveira Cc: Masami Hiramatsu Cc: Jonathan Corbet Signed-off-by: Daniel Bristot de Oliveira --- tools/tracing/rtla/src/osnoise_hist.c | 14 +++++++++++--- tools/tracing/rtla/src/osnoise_top.c | 13 ++++++++++--- tools/tracing/rtla/src/timerlat_hist.c | 17 ++++++++++++----- tools/tracing/rtla/src/timerlat_top.c | 19 +++++++++++++------ 4 files changed, 46 insertions(+), 17 deletions(-) diff --git a/tools/tracing/rtla/src/osnoise_hist.c b/tools/tracing/rtla/src/osnoise_hist.c index dfbcb5ca7ecb..8f81fa007364 100644 --- a/tools/tracing/rtla/src/osnoise_hist.c +++ b/tools/tracing/rtla/src/osnoise_hist.c @@ -870,8 +870,6 @@ int osnoise_hist_main(int argc, char *argv[]) } } - trace_instance_start(trace); - if (params->trace_output) { record = osnoise_init_trace_tool("osnoise"); if (!record) { @@ -885,9 +883,19 @@ int osnoise_hist_main(int argc, char *argv[]) goto out_hist; } - trace_instance_start(&record->trace); } + /* + * Start the tracer here, after having set all instances. + * + * Let the trace instance start first for the case of hitting a stop + * tracing while enabling other instances. The trace instance is the + * one with most valuable information. + */ + if (params->trace_output) + trace_instance_start(&record->trace); + trace_instance_start(trace); + tool->start_time = time(NULL); osnoise_hist_set_signals(params); diff --git a/tools/tracing/rtla/src/osnoise_top.c b/tools/tracing/rtla/src/osnoise_top.c index 0833537bb2eb..85abba568faf 100644 --- a/tools/tracing/rtla/src/osnoise_top.c +++ b/tools/tracing/rtla/src/osnoise_top.c @@ -697,8 +697,6 @@ int osnoise_top_main(int argc, char **argv) } } - trace_instance_start(trace); - if (params->trace_output) { record = osnoise_init_trace_tool("osnoise"); if (!record) { @@ -711,9 +709,18 @@ int osnoise_top_main(int argc, char **argv) if (retval) goto out_top; } + } + /* + * Start the tracer here, after having set all instances. + * + * Let the trace instance start first for the case of hitting a stop + * tracing while enabling other instances. The trace instance is the + * one with most valuable information. + */ + if (params->trace_output) trace_instance_start(&record->trace); - } + trace_instance_start(trace); tool->start_time = time(NULL); osnoise_top_set_signals(params); diff --git a/tools/tracing/rtla/src/timerlat_hist.c b/tools/tracing/rtla/src/timerlat_hist.c index e720c8908906..f431cf43246c 100644 --- a/tools/tracing/rtla/src/timerlat_hist.c +++ b/tools/tracing/rtla/src/timerlat_hist.c @@ -922,8 +922,6 @@ int timerlat_hist_main(int argc, char *argv[]) } } - trace_instance_start(trace); - if (params->trace_output) { record = osnoise_init_trace_tool("timerlat"); if (!record) { @@ -936,8 +934,6 @@ int timerlat_hist_main(int argc, char *argv[]) if (retval) goto out_hist; } - - trace_instance_start(&record->trace); } if (!params->no_aa) { @@ -956,9 +952,20 @@ int timerlat_hist_main(int argc, char *argv[]) err_msg("Failed to enable timerlat tracer\n"); goto out_hist; } + } + /* + * Start the tracers here, after having set all instances. + * + * Let the trace instance start first for the case of hitting a stop + * tracing while enabling other instances. The trace instance is the + * one with most valuable information. + */ + if (params->trace_output) + trace_instance_start(&record->trace); + if (!params->no_aa) trace_instance_start(&aa->trace); - } + trace_instance_start(trace); tool->start_time = time(NULL); timerlat_hist_set_signals(params); diff --git a/tools/tracing/rtla/src/timerlat_top.c b/tools/tracing/rtla/src/timerlat_top.c index d6b5a382569e..02cff4948981 100644 --- a/tools/tracing/rtla/src/timerlat_top.c +++ b/tools/tracing/rtla/src/timerlat_top.c @@ -743,8 +743,6 @@ int timerlat_top_main(int argc, char *argv[]) } } - trace_instance_start(trace); - if (params->trace_output) { record = osnoise_init_trace_tool("timerlat"); if (!record) { @@ -757,8 +755,6 @@ int timerlat_top_main(int argc, char *argv[]) if (retval) goto out_top; } - - trace_instance_start(&record->trace); } if (!params->no_aa) { @@ -785,11 +781,22 @@ int timerlat_top_main(int argc, char *argv[]) err_msg("Failed to enable timerlat tracer\n"); goto out_top; } - - trace_instance_start(&aa->trace); } } + /* + * Start the tracers here, after having set all instances. + * + * Let the trace instance start first for the case of hitting a stop + * tracing while enabling other instances. The trace instance is the + * one with most valuable information. + */ + if (params->trace_output) + trace_instance_start(&record->trace); + if (!params->no_aa && aa != top) + trace_instance_start(&aa->trace); + trace_instance_start(trace); + top->start_time = time(NULL); timerlat_top_set_signals(params);