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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 5369FC7618F for ; Mon, 15 Jul 2019 21:12:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 282462171F for ; Mon, 15 Jul 2019 21:12:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563225170; bh=rZHBqbDGqCH06DNkgPdKYIJqvOnyCsLRw7dL24Sc1oA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=lQc4jZ1BQ/jYXu0RoujN2Jza1xf/o5/ZqXvBIHFaVEPdcj8Geof0YPAlhMvhc5wOb rb2p7muZrDVj4yl1X6xyTWdGHpTYBRRA8WQCsAXV3Z9WNxDMeLAG4Bmu6Qh0YnuR78 gMfCnvW5MhfoJeiiLSXT2n/nas+oVxqfDK2f9hpI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732965AbfGOVMt (ORCPT ); Mon, 15 Jul 2019 17:12:49 -0400 Received: from mail.kernel.org ([198.145.29.99]:43568 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730207AbfGOVMs (ORCPT ); Mon, 15 Jul 2019 17:12:48 -0400 Received: from quaco.ghostprotocols.net (179-240-129-12.3g.claro.net.br [179.240.129.12]) (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 EFADF21738; Mon, 15 Jul 2019 21:12:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563225166; bh=rZHBqbDGqCH06DNkgPdKYIJqvOnyCsLRw7dL24Sc1oA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ENeBXWSD5CA1T3LCOfJRYqtCQa8zBSwEcTgdT6vLK81yocCV9DexJKHvJ2DQ7maQf 8iVAxAfD8xH6A2fFzDMmlmUbrUo0TID8wzV3auFTt88NKb9oxBUZ4IaCjXIIYc604x SrOFmgfGn9fg/bcctJhWs+SmqXz76V9CnfA9rcVE= 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, Adrian Hunter , Jiri Olsa , Arnaldo Carvalho de Melo Subject: [PATCH 06/28] perf db-export: Pass main_thread to db_export__thread() Date: Mon, 15 Jul 2019 18:11:38 -0300 Message-Id: <20190715211200.10984-7-acme@kernel.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190715211200.10984-1-acme@kernel.org> References: <20190715211200.10984-1-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: Adrian Hunter Calls to db_export__thread() already have main_thread so there is no reason to get it again, instead pass it as a parameter. Note that one difference in this approach is that the main thread is not created if it does not exist. It is better if it is not created because: - If main_thread is being traced it will have been created already. - If it is not being traced, there will be no other information about it, and it will never get deleted because there will be no EXIT event. Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lkml.kernel.org/r/20190710085810.1650-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/db-export.c | 29 ++++++++--------------------- tools/perf/util/db-export.h | 3 ++- 2 files changed, 10 insertions(+), 22 deletions(-) diff --git a/tools/perf/util/db-export.c b/tools/perf/util/db-export.c index 8fab57f90cbc..14501236c046 100644 --- a/tools/perf/util/db-export.c +++ b/tools/perf/util/db-export.c @@ -59,9 +59,9 @@ int db_export__machine(struct db_export *dbe, struct machine *machine) } int db_export__thread(struct db_export *dbe, struct thread *thread, - struct machine *machine, struct comm *comm) + struct machine *machine, struct comm *comm, + struct thread *main_thread) { - struct thread *main_thread; u64 main_thread_db_id = 0; int err; @@ -70,28 +70,19 @@ int db_export__thread(struct db_export *dbe, struct thread *thread, thread->db_id = ++dbe->thread_last_db_id; - if (thread->pid_ != -1) { - if (thread->pid_ == thread->tid) { - main_thread = thread; - } else { - main_thread = machine__findnew_thread(machine, - thread->pid_, - thread->pid_); - if (!main_thread) - return -ENOMEM; + if (main_thread) { + if (main_thread != thread) { err = db_export__thread(dbe, main_thread, machine, - comm); + comm, main_thread); if (err) - goto out_put; + return err; if (comm) { err = db_export__comm_thread(dbe, comm, thread); if (err) - goto out_put; + return err; } } main_thread_db_id = main_thread->db_id; - if (main_thread != thread) - thread__put(main_thread); } if (dbe->export_thread) @@ -99,10 +90,6 @@ int db_export__thread(struct db_export *dbe, struct thread *thread, machine); return 0; - -out_put: - thread__put(main_thread); - return err; } /* @@ -324,7 +311,7 @@ int db_export__sample(struct db_export *dbe, union perf_event *event, if (main_thread) comm = machine__thread_exec_comm(al->machine, main_thread); - err = db_export__thread(dbe, thread, al->machine, comm); + err = db_export__thread(dbe, thread, al->machine, comm, main_thread); if (err) goto out_put; diff --git a/tools/perf/util/db-export.h b/tools/perf/util/db-export.h index 148a657b1887..6e267321594c 100644 --- a/tools/perf/util/db-export.h +++ b/tools/perf/util/db-export.h @@ -75,7 +75,8 @@ void db_export__exit(struct db_export *dbe); int db_export__evsel(struct db_export *dbe, struct perf_evsel *evsel); int db_export__machine(struct db_export *dbe, struct machine *machine); int db_export__thread(struct db_export *dbe, struct thread *thread, - struct machine *machine, struct comm *comm); + struct machine *machine, struct comm *comm, + struct thread *main_thread); int db_export__exec_comm(struct db_export *dbe, struct comm *comm, struct thread *main_thread); int db_export__comm_thread(struct db_export *dbe, struct comm *comm, -- 2.21.0