From patchwork Mon Apr 18 06:32:13 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wang Nan X-Patchwork-Id: 66006 Delivered-To: patch@linaro.org Received: by 10.140.93.198 with SMTP id d64csp1118503qge; Sun, 17 Apr 2016 23:33:08 -0700 (PDT) X-Received: by 10.66.132.72 with SMTP id os8mr59141pab.63.1460961187921; Sun, 17 Apr 2016 23:33:07 -0700 (PDT) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id vc15si2215899pab.8.2016.04.17.23.33.07; Sun, 17 Apr 2016 23:33:07 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752099AbcDRGdB (ORCPT + 29 others); Mon, 18 Apr 2016 02:33:01 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:1314 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751981AbcDRGc5 (ORCPT ); Mon, 18 Apr 2016 02:32:57 -0400 Received: from 172.24.1.137 (EHLO szxeml430-hub.china.huawei.com) ([172.24.1.137]) by szxrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DFM24230; Mon, 18 Apr 2016 14:32:31 +0800 (CST) Received: from linux-4hy3.site (10.107.193.248) by szxeml430-hub.china.huawei.com (10.82.67.185) with Microsoft SMTP Server id 14.3.235.1; Mon, 18 Apr 2016 14:32:23 +0800 From: Wang Nan To: , CC: , , Wang Nan , Adrian Hunter , Jiri Olsa , Masami Hiramatsu , Namhyung Kim , Zefan Li , He Kuang , Arnaldo Carvalho de Melo Subject: [PATCH v4 6/6] perf record: Generate tracking events for process forked by perf Date: Mon, 18 Apr 2016 06:32:13 +0000 Message-ID: <1460961133-182746-7-git-send-email-wangnan0@huawei.com> X-Mailer: git-send-email 1.8.3.4 In-Reply-To: <1460961133-182746-1-git-send-email-wangnan0@huawei.com> References: <1460961133-182746-1-git-send-email-wangnan0@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.107.193.248] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020206.57147F80.004B, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-06-18 04:22:30, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 8c53cd581c8bfb3a8f4135db2e1739cc Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org With 'perf record --switch-output' without -a, record__synthesize() in record__switch_output() won't generate tracking events because there's no thread_map in evlist. Which causes newly created perf.data doesn't contain map and comm information. This patch creates a fake thread_map and directly call perf_event__synthesize_thread_map() for those events. Signed-off-by: Wang Nan Tested-by: Arnaldo Carvalho de Melo Cc: Adrian Hunter Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Zefan Li Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1460643725-167413-7-git-send-email-wangnan0@huawei.com Signed-off-by: He Kuang Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 31 ++++++++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) -- 1.8.3.4 diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 2965d83..0c6e201 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -500,6 +500,23 @@ record__finish_output(struct record *rec) return; } +static int record__synthesize_workload(struct record *rec) +{ + struct { + struct thread_map map; + struct thread_map_data map_data; + } thread_map; + + thread_map.map.nr = 1; + thread_map.map.map[0].pid = rec->evlist->workload.pid; + thread_map.map.map[0].comm = NULL; + return perf_event__synthesize_thread_map(&rec->tool, &thread_map.map, + process_synthesized_event, + &rec->session->machines.host, + rec->opts.sample_address, + rec->opts.proc_map_timeout); +} + static int record__synthesize(struct record *rec); static int @@ -532,9 +549,21 @@ record__switch_output(struct record *rec, bool at_exit) file->path, timestamp); /* Output tracking events */ - if (!at_exit) + if (!at_exit) { record__synthesize(rec); + /* + * In 'perf record --switch-output' without -a, + * record__synthesize() in record__switch_output() won't + * generate tracking events because there's no thread_map + * in evlist. Which causes newly created perf.data doesn't + * contain map and comm information. + * Create a fake thread_map and directly call + * perf_event__synthesize_thread_map() for those events. + */ + if (target__none(&rec->opts.target)) + record__synthesize_workload(rec); + } return fd; }