Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751876AbaDAIDR (ORCPT ); Tue, 1 Apr 2014 04:03:17 -0400 Received: from mx1.redhat.com ([209.132.183.28]:30164 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751287AbaDAIDJ (ORCPT ); Tue, 1 Apr 2014 04:03:09 -0400 Date: Tue, 1 Apr 2014 10:02:58 +0200 From: Robin Hack To: Eunbong Song Cc: ak@linux.intel.com, sasha.levin@oracle.com, "linux-kernel@vger.kernel.org" Subject: Re: tools/liblockdep: Build failure Message-ID: <20140401080258.GA10429@bigoook.brq.redhat.com> References: <22212997.138341396332274687.JavaMail.weblogic@epml01> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <22212997.138341396332274687.JavaMail.weblogic@epml01> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi. I have same issue. I investigated output of gcc -E and I found that asmlinkage macro isn't expanded as is expected. $ grep asmlinkage common.o asmlinkage extern void lockdep_sys_exit(void); On Tue, Apr 01, 2014 at 06:04:35AM +0000, Eunbong Song wrote: > > There is tools/liblockdep build failure. > I have been trying to find the cause and i found commit id 63f9a7fde715352e0769302527670542a664b981 is the casue. > > Author: Andi Kleen > Date: Sat Feb 8 08:52:01 2014 +0100 > > asmlinkage: Make lockdep_sys_exit asmlinkage > > lockdep_sys_exit can be called from assembler code, so make it > asmlinkage. > > Cc: Peter Zijlstra > Cc: Ingo Molnar > Signed-off-by: Andi Kleen > Link: http://lkml.kernel.org/r/1391845930-28580-5-git-send-email-ak@linux.intel.com > Signed-off-by: H. Peter Anvin > > diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h > index 92b1bfc..7df9aa6 100644 > --- a/include/linux/lockdep.h > +++ b/include/linux/lockdep.h > @@ -265,7 +265,7 @@ extern void lockdep_info(void); > extern void lockdep_reset(void); > extern void lockdep_reset_lock(struct lockdep_map *lock); > extern void lockdep_free_key_range(void *start, unsigned long size); > -extern void lockdep_sys_exit(void); > +extern asmlinkage void lockdep_sys_exit(void); > > extern void lockdep_off(void); > extern void lockdep_on(void); > diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c > index eb8a547..c8b6753 100644 > --- a/kernel/locking/lockdep.c > +++ b/kernel/locking/lockdep.c > @@ -4191,7 +4191,7 @@ void debug_show_held_locks(struct task_struct *task) > } > EXPORT_SYMBOL_GPL(debug_show_held_locks); > > -void lockdep_sys_exit(void) > +asmlinkage void lockdep_sys_exit(void) > { > struct task_struct *curr = current; -- 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/