From patchwork Tue Feb 18 14:28:57 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andi Kleen X-Patchwork-Id: 3671421 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 AC036BF40C for ; Tue, 18 Feb 2014 14:34:01 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id CBC4A2020F for ; Tue, 18 Feb 2014 14:34:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B448A201DE for ; Tue, 18 Feb 2014 14:33:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755545AbaBROdz (ORCPT ); Tue, 18 Feb 2014 09:33:55 -0500 Received: from mga02.intel.com ([134.134.136.20]:5554 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756020AbaBRO3w (ORCPT ); Tue, 18 Feb 2014 09:29:52 -0500 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP; 18 Feb 2014 06:29:52 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,502,1389772800"; d="scan'208";a="485209717" Received: from laut.jf.intel.com (HELO localhost) ([10.23.232.94]) by orsmga002.jf.intel.com with ESMTP; 18 Feb 2014 06:29:52 -0800 Received: by localhost (Postfix, from userid 1000) id D48061249CB; Tue, 18 Feb 2014 15:29:12 +0100 (CET) From: Andi Kleen To: linux-kernel@vger.kernel.org Cc: sam@ravnborg.org, x86@kernel.org, linux-kbuild@vger.kernel.org, Andi Kleen , rusty@rustcorp.com.au Subject: [PATCH 19/20] lto, module: Warn about modules that are not fully LTOed Date: Tue, 18 Feb 2014 15:28:57 +0100 Message-Id: <1392733738-8290-20-git-send-email-andi@firstfloor.org> X-Mailer: git-send-email 1.8.5.2 In-Reply-To: <1392733738-8290-1-git-send-email-andi@firstfloor.org> References: <1392733738-8290-1-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. */