From patchwork Fri Feb 14 21:21:42 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andi Kleen X-Patchwork-Id: 3654491 Return-Path: X-Original-To: patchwork-linux-kbuild@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 006EDBF13A for ; Fri, 14 Feb 2014 21:26:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 36ED1201CE for ; Fri, 14 Feb 2014 21:26:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 62F62201BF for ; Fri, 14 Feb 2014 21:26:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753248AbaBNVWf (ORCPT ); Fri, 14 Feb 2014 16:22:35 -0500 Received: from mga09.intel.com ([134.134.136.24]:7228 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753245AbaBNVWd (ORCPT ); Fri, 14 Feb 2014 16:22:33 -0500 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga102.jf.intel.com with ESMTP; 14 Feb 2014 13:18:16 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.95,847,1384329600"; d="scan'208";a="483680397" Received: from laut.jf.intel.com (HELO localhost) ([10.23.232.94]) by orsmga002.jf.intel.com with ESMTP; 14 Feb 2014 13:22:30 -0800 Received: by localhost (Postfix, from userid 1000) id 2CA54124B09; Fri, 14 Feb 2014 22:21:51 +0100 (CET) From: Andi Kleen To: linux-kernel@vger.kernel.org Cc: x86@kernel.org, linux-kbuild@vger.kernel.org, mmarek@suse.cz, Andi Kleen , rusty@rustcorp.com.au Subject: [PATCH 18/19] lto, module: Warn about modules that are not fully LTOed Date: Fri, 14 Feb 2014 22:21:42 +0100 Message-Id: <1392412903-25733-19-git-send-email-andi@firstfloor.org> X-Mailer: git-send-email 1.8.5.2 In-Reply-To: <1392412903-25733-1-git-send-email-andi@firstfloor.org> References: <1392412903-25733-1-git-send-email-andi@firstfloor.org> Sender: linux-kbuild-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Andi Kleen When __gnu_lto_* is present that means that the module hasn't run with LTO yet. Cc: rusty@rustcorp.com.au Signed-off-by: Andi Kleen --- kernel/module.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/kernel/module.c b/kernel/module.c index b99e801..4f3eff7 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -1949,8 +1949,11 @@ static int simplify_symbols(struct module *mod, const struct load_info *info) switch (sym[i].st_shndx) { case SHN_COMMON: /* Ignore common symbols */ - if (!strncmp(name, "__gnu_lto", 9)) + if (!strncmp(name, "__gnu_lto", 9)) { + pr_info("%s: module not link time optimized\n", + mod->name); break; + } /* We compiled with -fno-common. These are not supposed to happen. */