From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1424514AbcFHKQU (ORCPT ); Wed, 8 Jun 2016 06:16:20 -0400 Received: from szxga04-in.huawei.com ([119.145.14.52]:44557 "EHLO szxga04-in.huawei.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1161938AbcFHKQR (ORCPT ); Wed, 8 Jun 2016 06:16:17 -0400 From: He Kuang To: , , , , , , , , , , , , , , , , , CC: Subject: [PATCH 0/3] Fixes on remote unwind Date: Wed, 8 Jun 2016 10:15:35 +0000 Message-ID: <1465380938-64371-1-git-send-email-hekuang@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=0001.0A090202.5757F064.0079,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 42d728ae11b2d6855714e457db994366 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The remote unwind can supported scenario where we collect on a x86_64 machine and want to do analysis on a ARM64 or x86-32 machine. Though this is not tested, after Arnaldo questioned the above issue, I tested and found a bug. In util/unwind-libunwind-local.c, PERF_REG_SP/IP is used, but those macros are assigned to the host platform, we should redefine them in the wrapper file, for example in "util/libunwind/x86_32.c". After fixing this problem, i686 perf.data can be parsed on aarch64 machine. To Arnaldo, I noticed that this patch "perf tools: Find vdso supporting cross-platform analysis" is not on "origin/perf/unwind" branch, this patch was applied, please check if it was missed, the above test needs this patch. Thank you. He Kuang (3): perf unwind: Change macro names of perf register perf unwind: Fix wrongly used regs for x86_32 unwind perf unwind: Fix wrongly used regs for aarch64 unwind tools/perf/util/libunwind/arm64.c | 5 +++++ tools/perf/util/libunwind/x86_32.c | 6 ++++++ tools/perf/util/unwind-libunwind-local.c | 6 ++++-- tools/perf/util/unwind.h | 9 +++++++++ 4 files changed, 24 insertions(+), 2 deletions(-) -- 1.8.5.2