From patchwork Mon Jan 11 13:48:31 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wangnan (F)" X-Patchwork-Id: 565834 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id CF6ED1402DE for ; Tue, 12 Jan 2016 00:52:06 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760241AbcAKNus (ORCPT ); Mon, 11 Jan 2016 08:50:48 -0500 Received: from szxga02-in.huawei.com ([119.145.14.65]:11621 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760157AbcAKNt7 (ORCPT ); Mon, 11 Jan 2016 08:49:59 -0500 Received: from 172.24.1.47 (EHLO szxeml422-hub.china.huawei.com) ([172.24.1.47]) by szxrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id CZQ72433; Mon, 11 Jan 2016 21:49:34 +0800 (CST) Received: from linux-4hy3.site (10.107.193.248) by szxeml422-hub.china.huawei.com (10.82.67.152) with Microsoft SMTP Server id 14.3.235.1; Mon, 11 Jan 2016 21:49:22 +0800 From: Wang Nan To: CC: , , , , , Wang Nan , He Kuang , "Arnaldo Carvalho de Melo" , Jiri Olsa , Masami Hiramatsu , Namhyung Kim Subject: [PATCH 40/53] perf record: Generate tracking events for process forked by perf Date: Mon, 11 Jan 2016 13:48:31 +0000 Message-ID: <1452520124-2073-41-git-send-email-wangnan0@huawei.com> X-Mailer: git-send-email 1.8.3.4 In-Reply-To: <1452520124-2073-1-git-send-email-wangnan0@huawei.com> References: <1452520124-2073-1-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=0001.0A020204.5693B2EE.0062, 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: e6abd52c19cd6e06b7bf28f8d28144bd Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@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(+) diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 5305a30..aaf3b0f 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -563,6 +563,23 @@ 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; }