From patchwork Wed May 25 13:44:50 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wang Nan X-Patchwork-Id: 68597 Delivered-To: patch@linaro.org Received: by 10.140.92.199 with SMTP id b65csp1223813qge; Wed, 25 May 2016 06:45:25 -0700 (PDT) X-Received: by 10.66.145.228 with SMTP id sx4mr5861318pab.131.1464183925011; Wed, 25 May 2016 06:45:25 -0700 (PDT) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id ac9si3550823pac.200.2016.05.25.06.45.24; Wed, 25 May 2016 06:45:25 -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 S1752409AbcEYNpW (ORCPT + 30 others); Wed, 25 May 2016 09:45:22 -0400 Received: from szxga03-in.huawei.com ([119.145.14.66]:35510 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750812AbcEYNpV (ORCPT ); Wed, 25 May 2016 09:45:21 -0400 Received: from 172.24.1.136 (EHLO szxeml433-hub.china.huawei.com) ([172.24.1.136]) by szxrg03-dlp.huawei.com (MOS 4.4.3-GA FastPath queued) with ESMTP id CCE84129; Wed, 25 May 2016 21:45:10 +0800 (CST) Received: from linux-4hy3.site (10.107.193.248) by szxeml433-hub.china.huawei.com (10.82.67.210) with Microsoft SMTP Server id 14.3.235.1; Wed, 25 May 2016 21:45:03 +0800 From: Wang Nan To: CC: , , Wang Nan , Arnaldo Carvalho de Melo , Jiri Olsa , Masami Hiramatsu , Namhyung Kim , Zefan Li , He Kuang Subject: [PATCH v6 02/10] perf tools: Choose correct reading direction according to evlist->backward Date: Wed, 25 May 2016 13:44:50 +0000 Message-ID: <1464183898-174512-3-git-send-email-wangnan0@huawei.com> X-Mailer: git-send-email 1.8.3.4 In-Reply-To: <1464183898-174512-1-git-send-email-wangnan0@huawei.com> References: <1464183898-174512-1-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=0001.0A020205.5745AC66.01EF, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: e54e19db84d8eb1710719ef6a008d892 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now we have evlist->backward to indicate the mmap direction. Make perf_evlist__mmap_read() choose right direction automatically. Signed-off-by: Wang Nan Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Zefan Li Cc: He Kuang --- tools/perf/util/evlist.c | 9 ++++++++- tools/perf/util/evlist.h | 2 ++ 2 files changed, 10 insertions(+), 1 deletion(-) -- 1.8.3.4 diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index f916d25..8f7b44e 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -778,7 +778,7 @@ broken_event: return event; } -union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx) +union perf_event *perf_evlist__mmap_read_forward(struct perf_evlist *evlist, int idx) { struct perf_mmap *md = &evlist->mmap[idx]; u64 head; @@ -833,6 +833,13 @@ perf_evlist__mmap_read_backward(struct perf_evlist *evlist, int idx) return perf_mmap__read(md, false, start, end, &md->prev); } +union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx) +{ + if (!evlist->backward) + return perf_evlist__mmap_read_forward(evlist, idx); + return perf_evlist__mmap_read_backward(evlist, idx); +} + void perf_evlist__mmap_read_catchup(struct perf_evlist *evlist, int idx) { struct perf_mmap *md = &evlist->mmap[idx]; diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index 0505012..41e65ac 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -134,6 +134,8 @@ struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id); union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx); +union perf_event *perf_evlist__mmap_read_forward(struct perf_evlist *evlist, + int idx); union perf_event *perf_evlist__mmap_read_backward(struct perf_evlist *evlist, int idx); void perf_evlist__mmap_read_catchup(struct perf_evlist *evlist, int idx);