From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752082AbcDZCbZ (ORCPT ); Mon, 25 Apr 2016 22:31:25 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:38665 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751693AbcDZCbV (ORCPT ); Mon, 25 Apr 2016 22:31:21 -0400 From: Wang Nan To: CC: , Wang Nan , "Arnaldo Carvalho de Melo" , Peter Zijlstra , Zefan Li , Subject: [PATCH 0/5] perf tools: Backward ring buffer support Date: Tue, 26 Apr 2016 02:28:53 +0000 Message-ID: <1461637738-62722-1-git-send-email-wangnan0@huawei.com> X-Mailer: git-send-email 1.8.3.4 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=0001.0A020205.571ED295.0062,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: 212b937ccaefe54d5e47f3142d2fe79c Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit 9ecda41acb97 ("perf/core: Add ::write_backward attribute to perf event") introduces backward ring buffer. This 5 patches add basic support for reading from it, and add a new test case for it. Wang Nan (5): perf tools: Enforce ring buffer reading perf tools: Extract __perf_evlist__mmap_read() perf tools: Rename variable in __perf_evlist__mmap_read() perf tools: Support reading from backward ring buffer perf tests: Add test to check backward ring buffer tools/perf/tests/Build | 1 + tools/perf/tests/backward-ring-buffer.c | 151 ++++++++++++++++++++++++++++++++ tools/perf/tests/builtin-test.c | 4 + tools/perf/tests/tests.h | 1 + tools/perf/util/evlist.c | 104 +++++++++++++++++----- tools/perf/util/evlist.h | 4 + 6 files changed, 242 insertions(+), 23 deletions(-) create mode 100644 tools/perf/tests/backward-ring-buffer.c Signed-off-by: Wang Nan Cc: Arnaldo Carvalho de Melo Cc: Peter Zijlstra Cc: Zefan Li Cc: pi3orama@163.com -- 1.8.3.4