From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754259AbcEYFEM (ORCPT ); Wed, 25 May 2016 01:04:12 -0400 Received: from szxga01-in.huawei.com ([58.251.152.64]:1047 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752172AbcEYFEL (ORCPT ); Wed, 25 May 2016 01:04:11 -0400 From: Wang Nan To: CC: , , Wang Nan , Arnaldo Carvalho de Melo , Jiri Olsa , Masami Hiramatsu , Namhyung Kim , Zefan Li , He Kuang Subject: [PATCH v5 2/8] perf tools: Choose correct reading direction according to evlist->backward Date: Wed, 25 May 2016 05:03:37 +0000 Message-ID: <1464152623-171824-3-git-send-email-wangnan0@huawei.com> X-Mailer: git-send-email 1.8.3.4 In-Reply-To: <1464152623-171824-1-git-send-email-wangnan0@huawei.com> References: <1464152623-171824-1-git-send-email-wangnan0@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.107.193.248] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A090203.5745323F.005D,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: cdb2da567d61341ba09c5d59f1af3e43 Sender: linux-kernel-owner@vger.kernel.org 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(-) 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); -- 1.8.3.4