From patchwork Mon Feb 22 09:10:57 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wang Nan X-Patchwork-Id: 62492 Delivered-To: patch@linaro.org Received: by 10.112.43.199 with SMTP id y7csp1112887lbl; Mon, 22 Feb 2016 01:17:13 -0800 (PST) X-Received: by 10.66.190.229 with SMTP id gt5mr36805834pac.118.1456132633086; Mon, 22 Feb 2016 01:17:13 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id g15si38569657pfg.40.2016.02.22.01.17.12; Mon, 22 Feb 2016 01:17:13 -0800 (PST) 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 S1754045AbcBVJRK (ORCPT + 30 others); Mon, 22 Feb 2016 04:17:10 -0500 Received: from szxga02-in.huawei.com ([119.145.14.65]:58104 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753942AbcBVJRH (ORCPT ); Mon, 22 Feb 2016 04:17:07 -0500 Received: from 172.24.1.47 (EHLO szxeml431-hub.china.huawei.com) ([172.24.1.47]) by szxrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DBU58487; Mon, 22 Feb 2016 17:12:03 +0800 (CST) Received: from linux-4hy3.site (10.107.193.248) by szxeml431-hub.china.huawei.com (10.82.67.208) with Microsoft SMTP Server id 14.3.235.1; Mon, 22 Feb 2016 17:11:55 +0800 From: Wang Nan To: Alexei Starovoitov , Arnaldo Carvalho de Melo , Arnaldo Carvalho de Melo , Brendan Gregg CC: Adrian Hunter , Cody P Schafer , "David S. Miller" , He Kuang , =?UTF-8?q?J=C3=A9r=C3=A9mie=20Galarneau?= , Jiri Olsa , Kirill Smelkov , Li Zefan , Masami Hiramatsu , Namhyung Kim , Peter Zijlstra , , Wang Nan , Subject: [PATCH 30/48] perf record: Generate tracking events for process forked by perf Date: Mon, 22 Feb 2016 09:10:57 +0000 Message-ID: <1456132275-98875-31-git-send-email-wangnan0@huawei.com> X-Mailer: git-send-email 1.8.3.4 In-Reply-To: <1456132275-98875-1-git-send-email-wangnan0@huawei.com> References: <1456132275-98875-1-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=0001.0A020204.56CAD0E4.00DB, 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: ce1de287fc6e8a2a6a4243907b9c807d 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 Signed-off-by: He Kuang Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Zefan Li Cc: pi3orama@163.com --- tools/perf/builtin-record.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) -- 1.8.3.4 diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 3a11102..7d4d8bf 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -567,6 +567,23 @@ record__switch_output(struct record *rec, bool at_exit) perf_session__create_kernel_maps(rec->session); perf_session__set_id_hdr_size(rec->session); record__synthesize(rec); + + if (target__none(&rec->opts.target)) { + 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; + 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); + } } return fd; }