From patchwork Sat Nov 26 07:03:40 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wang Nan X-Patchwork-Id: 84231 Delivered-To: patch@linaro.org Received: by 10.140.20.101 with SMTP id 92csp386146qgi; Fri, 25 Nov 2016 23:07:31 -0800 (PST) X-Received: by 10.84.210.40 with SMTP id z37mr26109117plh.32.1480144051718; Fri, 25 Nov 2016 23:07:31 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id r64si47896440pfa.128.2016.11.25.23.07.31; Fri, 25 Nov 2016 23:07:31 -0800 (PST) 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 S1751947AbcKZHHY (ORCPT + 25 others); Sat, 26 Nov 2016 02:07:24 -0500 Received: from szxga02-in.huawei.com ([119.145.14.65]:5407 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751438AbcKZHHE (ORCPT ); Sat, 26 Nov 2016 02:07:04 -0500 Received: from 172.24.1.136 (EHLO szxeml431-hub.china.huawei.com) ([172.24.1.136]) by szxrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DRH40848; Sat, 26 Nov 2016 15:06:21 +0800 (CST) Received: from linux-4hy3.site (10.107.193.248) by szxeml431-hub.china.huawei.com (10.82.67.208) with Microsoft SMTP Server id 14.3.235.1; Sat, 26 Nov 2016 15:06:09 +0800 From: Wang Nan To: , CC: , , , , , Wang Nan , Jiri Olsa Subject: [PATCH v3 16/30] perf clang: Pass full path to builtin clang Date: Sat, 26 Nov 2016 07:03:40 +0000 Message-ID: <20161126070354.141764-17-wangnan0@huawei.com> X-Mailer: git-send-email 2.10.1 In-Reply-To: <20161126070354.141764-1-wangnan0@huawei.com> References: <20161126070354.141764-1-wangnan0@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.107.193.248] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If clang changes its working directory, relative path passed to perf_clang__compile_bpf() becomes invalid. Before running clang, convert it to absolute path so file can be found even working directory is changed. Signed-off-by: Wang Nan Cc: Arnaldo Carvalho de Melo Cc: Alexei Starovoitov Cc: He Kuang Cc: Jiri Olsa Cc: Zefan Li Cc: pi3orama@163.com --- tools/perf/util/c++/clang.cpp | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) -- 2.10.1 diff --git a/tools/perf/util/c++/clang.cpp b/tools/perf/util/c++/clang.cpp index 1e97415..610f1cf 100644 --- a/tools/perf/util/c++/clang.cpp +++ b/tools/perf/util/c++/clang.cpp @@ -13,6 +13,7 @@ #include "clang/Frontend/CompilerInstance.h" #include "clang/Frontend/TextDiagnosticPrinter.h" #include "clang/Tooling/Tooling.h" +#include "llvm/ADT/SmallString.h" #include "llvm/IR/LegacyPassManager.h" #include "llvm/IR/Module.h" #include "llvm/Option/Option.h" @@ -164,7 +165,7 @@ void perf_clang__cleanup(void) llvm::llvm_shutdown(); } -int perf_clang__compile_bpf(const char *filename, +int perf_clang__compile_bpf(const char *_filename, void **p_obj_buf, size_t *p_obj_buf_sz) { @@ -173,8 +174,11 @@ int perf_clang__compile_bpf(const char *filename, if (!p_obj_buf || !p_obj_buf_sz) return -EINVAL; + llvm::SmallString FileName(_filename); + llvm::sys::fs::make_absolute(FileName); + llvm::opt::ArgStringList CFlags; - auto M = getModuleFromSource(std::move(CFlags), filename); + auto M = getModuleFromSource(std::move(CFlags), FileName.data()); if (!M) return -EINVAL; auto O = getBPFObjectFromModule(&*M);