From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751142AbcGNHCA (ORCPT ); Thu, 14 Jul 2016 03:02:00 -0400 Received: from terminus.zytor.com ([198.137.202.10]:45152 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751101AbcGNHBx (ORCPT ); Thu, 14 Jul 2016 03:01:53 -0400 Date: Thu, 14 Jul 2016 00:01:42 -0700 From: tip-bot for Arnaldo Carvalho de Melo Message-ID: Cc: wangnan0@huawei.com, linux-kernel@vger.kernel.org, jpoimboe@redhat.com, namhyung@kernel.org, tglx@linutronix.de, acme@redhat.com, adrian.hunter@intel.com, mingo@kernel.org, dsahern@gmail.com, hpa@zytor.com, jolsa@kernel.org Reply-To: jolsa@kernel.org, dsahern@gmail.com, hpa@zytor.com, linux-kernel@vger.kernel.org, namhyung@kernel.org, jpoimboe@redhat.com, wangnan0@huawei.com, tglx@linutronix.de, mingo@kernel.org, acme@redhat.com, adrian.hunter@intel.com To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] objtool: Add fallback from ELF_C_READ_MMAP to ELF_C_READ Git-Commit-ID: 774bec3fddcccb0b36f319c6d6e8148dc5e8c937 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 774bec3fddcccb0b36f319c6d6e8148dc5e8c937 Gitweb: http://git.kernel.org/tip/774bec3fddcccb0b36f319c6d6e8148dc5e8c937 Author: Arnaldo Carvalho de Melo AuthorDate: Wed, 13 Jul 2016 15:28:51 -0300 Committer: Arnaldo Carvalho de Melo CommitDate: Wed, 13 Jul 2016 15:38:50 -0300 objtool: Add fallback from ELF_C_READ_MMAP to ELF_C_READ Not all libelf implementations have this "Please, ELF_C_READ, but use mmap if possible" elf_begin() cmd, so provide a fallback to plain old ELF_C_READ. Case in point: Alpine Linux 3.4. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Josh Poimboeuf Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-1fctuknrawgoi5xqon4mu9dv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/objtool/elf.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c index e11f6b6..0d7983a 100644 --- a/tools/objtool/elf.c +++ b/tools/objtool/elf.c @@ -30,6 +30,13 @@ #include "elf.h" #include "warn.h" +/* + * Fallback for systems without this "read, mmaping if possible" cmd. + */ +#ifndef ELF_C_READ_MMAP +#define ELF_C_READ_MMAP ELF_C_READ +#endif + struct section *find_section_by_name(struct elf *elf, const char *name) { struct section *sec;