From patchwork Tue Nov 15 04:06:03 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wang Nan X-Patchwork-Id: 82243 Delivered-To: patch@linaro.org Received: by 10.140.97.165 with SMTP id m34csp1341890qge; Mon, 14 Nov 2016 20:13:06 -0800 (PST) X-Received: by 10.99.126.6 with SMTP id z6mr74782471pgc.182.1479183186422; Mon, 14 Nov 2016 20:13:06 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id j190si11557181pgc.174.2016.11.14.20.13.06; Mon, 14 Nov 2016 20:13:06 -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 S966471AbcKOEMx (ORCPT + 26 others); Mon, 14 Nov 2016 23:12:53 -0500 Received: from szxga03-in.huawei.com ([119.145.14.66]:25330 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965895AbcKOEIR (ORCPT ); Mon, 14 Nov 2016 23:08:17 -0500 Received: from 172.24.1.36 (EHLO SZXEML429-HUB.china.huawei.com) ([172.24.1.36]) by szxrg03-dlp.huawei.com (MOS 4.4.3-GA FastPath queued) with ESMTP id CLJ01985; Tue, 15 Nov 2016 12:08:10 +0800 (CST) Received: from linux-4hy3.site (10.107.193.248) by SZXEML429-HUB.china.huawei.com (10.82.67.184) with Microsoft SMTP Server id 14.3.235.1; Tue, 15 Nov 2016 12:08:01 +0800 From: Wang Nan To: , CC: , , , , Wang Nan , Jiri Olsa Subject: [PATCH 20/34] perf clang: Pass full path to builtin clang Date: Tue, 15 Nov 2016 04:06:03 +0000 Message-ID: <20161115040617.69788-21-wangnan0@huawei.com> X-Mailer: git-send-email 2.10.1 In-Reply-To: <20161115040617.69788-1-wangnan0@huawei.com> References: <20161115040617.69788-1-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);