From patchwork Tue Feb 18 14:28:40 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andi Kleen X-Patchwork-Id: 3671281 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 B9907BF40C for ; Tue, 18 Feb 2014 14:29:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C127E20251 for ; Tue, 18 Feb 2014 14:29:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 09C5C20249 for ; Tue, 18 Feb 2014 14:29:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755979AbaBRO3v (ORCPT ); Tue, 18 Feb 2014 09:29:51 -0500 Received: from mga11.intel.com ([192.55.52.93]:12903 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755818AbaBRO3q (ORCPT ); Tue, 18 Feb 2014 09:29:46 -0500 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP; 18 Feb 2014 06:29:46 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,502,1389772800"; d="scan'208";a="477060065" Received: from laut.jf.intel.com (HELO localhost) ([10.23.232.94]) by fmsmga001.fm.intel.com with ESMTP; 18 Feb 2014 06:29:45 -0800 Received: by localhost (Postfix, from userid 1000) id 1D8FB1249CB; Tue, 18 Feb 2014 15:29:06 +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 Subject: [PATCH 02/20] lto: Disable LTO for hweight functions Date: Tue, 18 Feb 2014 15:28:40 +0100 Message-Id: <1392733738-8290-3-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 x86 calls the hweight library functions with special calling conventions. LTO doesn't support compiling individual files with special options. Just disable LTO for the file. Signed-off-by: Andi Kleen --- lib/Makefile | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/lib/Makefile b/lib/Makefile index 48140e3..2057304 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -46,7 +46,9 @@ obj-$(CONFIG_CHECK_SIGNATURE) += check_signature.o obj-$(CONFIG_DEBUG_LOCKING_API_SELFTESTS) += locking-selftest.o GCOV_PROFILE_hweight.o := n -CFLAGS_hweight.o = $(subst $(quote),,$(CONFIG_ARCH_HWEIGHT_CFLAGS)) +CFLAGS_hweight.o = $(subst $(quote),,$(CONFIG_ARCH_HWEIGHT_CFLAGS)) \ + $(DISABLE_LTO) + obj-$(CONFIG_GENERIC_HWEIGHT) += hweight.o obj-$(CONFIG_BTREE) += btree.o