From patchwork Fri Feb 14 21:21:26 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andi Kleen X-Patchwork-Id: 3654271 Return-Path: X-Original-To: patchwork-linux-kbuild@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 6C3779F334 for ; Fri, 14 Feb 2014 21:22:28 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B0B022020E for ; Fri, 14 Feb 2014 21:22:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CF651201BF for ; Fri, 14 Feb 2014 21:22:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752606AbaBNVW0 (ORCPT ); Fri, 14 Feb 2014 16:22:26 -0500 Received: from mga09.intel.com ([134.134.136.24]:6596 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752583AbaBNVWZ (ORCPT ); Fri, 14 Feb 2014 16:22:25 -0500 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga102.jf.intel.com with ESMTP; 14 Feb 2014 13:18:08 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.95,847,1384329600"; d="scan'208";a="475474898" Received: from laut.jf.intel.com (HELO localhost) ([10.23.232.94]) by fmsmga001.fm.intel.com with ESMTP; 14 Feb 2014 13:22:24 -0800 Received: by localhost (Postfix, from userid 1000) id 86BB8124ACD; Fri, 14 Feb 2014 22:21:45 +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 Subject: [PATCH 02/19] lto: Disable LTO for hweight functions Date: Fri, 14 Feb 2014 22:21:26 +0100 Message-Id: <1392412903-25733-3-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 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