From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750996AbcEIBsR (ORCPT ); Sun, 8 May 2016 21:48:17 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:55453 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750878AbcEIBsP (ORCPT ); Sun, 8 May 2016 21:48:15 -0400 From: Wang Nan To: CC: , , , Wang Nan Subject: [PATCH v3 0/2] perf tools: Backward ring buffer support Date: Mon, 9 May 2016 01:47:49 +0000 Message-ID: <1462758471-89706-1-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: [10.107.193.250] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A090203.572FEC57.0001,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: 1f565d9ade8f6a76a8656f2f97e1e855 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 2 patches add basic support for reading from it, and add a new test case for it. v2 -> v3: Improve commit message, add more comments (patch 1/2). patch 1-2/4 in v2 have been collected so remove them. v1 -> v2: Patch 1/5 in v1 has been collected by perf/core, so remove it; Change function names in patch 2/5 in v1 (1/4 in v2): __perf_evlist__mmap_read -> perf_mmap__read Wang Nan (2): 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 | 50 +++++++++++ tools/perf/util/evlist.h | 4 + 6 files changed, 211 insertions(+) create mode 100644 tools/perf/tests/backward-ring-buffer.c -- 1.8.3.4