From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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 From: Andi Kleen 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> 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 List-ID: To: linux-kernel@vger.kernel.org Cc: sam@ravnborg.org, x86@kernel.org, linux-kbuild@vger.kernel.org, Andi Kleen , rusty@rustcorp.com.au 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