Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932640AbbELIxO (ORCPT ); Tue, 12 May 2015 04:53:14 -0400 Received: from mail-wi0-f181.google.com ([209.85.212.181]:34243 "EHLO mail-wi0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932189AbbELIxI (ORCPT ); Tue, 12 May 2015 04:53:08 -0400 Date: Tue, 12 May 2015 10:53:03 +0200 From: Ingo Molnar To: Linus Torvalds , Peter Zijlstra , Waiman Long Cc: Peter Anvin , Brian Gerst , Thomas Gleixner , Borislav Petkov , Peter Zijlstra , Andy Lutomirski , Louis Langholtz , Denys Vlasenko , linux-kernel@vger.kernel.org Subject: Re: [tip:x86/build] x86/build: Remove -Wno-sign-compare Message-ID: <20150512085303.GA9090@gmail.com> References: <20150512084415.GA6535@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150512084415.GA6535@gmail.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1870 Lines: 30 * Ingo Molnar wrote: > Here's the full list of warnings for allmod64: > > make bzImage: > > include/linux/blkdev.h:624:26: warning: switch condition has boolean value [-Wswitch-bool] > ./arch/x86/include/asm/qspinlock.h:28:2: warning: implicit declaration of function ?pv_queued_spin_lock_slowpath? [-Wimplicit-function-declaration] > ./arch/x86/include/asm/qspinlock.h:33:2: warning: implicit declaration of function ?pv_queued_spin_unlock? [-Wimplicit-function-declaration] > ./arch/x86/include/asm/qspinlock.h:28:2: warning: implicit declaration of function ?pv_queued_spin_lock_slowpath? [-Wimplicit-function-declaration] > ./arch/x86/include/asm/qspinlock.h:33:2: warning: implicit declaration of function ?pv_queued_spin_unlock? [-Wimplicit-function-declaration] > ./arch/x86/include/asm/qspinlock.h:28:2: warning: implicit declaration of function ?pv_queued_spin_lock_slowpath? [-Wimplicit-function-declaration] > ./arch/x86/include/asm/qspinlock.h:33:2: warning: implicit declaration of function ?pv_queued_spin_unlock? [-Wimplicit-function-declaration] > ./arch/x86/include/asm/qspinlock.h:28:2: warning: implicit declaration of function ?pv_queued_spin_lock_slowpath? [-Wimplicit-function-declaration] > ./arch/x86/include/asm/qspinlock.h:33:2: warning: implicit declaration of function ?pv_queued_spin_unlock? [-Wimplicit-function-declaration] And that comes from tip:locking/core, but those warnings do not show up with GCC 4.9.2: so it's either a GCC 5.0.1 bug, or we missed something with the WIP queued pv spinlocks changes that newer GCC is able to notice. Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/