From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753265AbaBNVWg (ORCPT ); Fri, 14 Feb 2014 16:22:36 -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 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.95,847,1384329600"; d="scan'208";a="483680397" 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-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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. */ -- 1.8.5.2