Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030211AbWHCTpV (ORCPT ); Thu, 3 Aug 2006 15:45:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030215AbWHCTpV (ORCPT ); Thu, 3 Aug 2006 15:45:21 -0400 Received: from mx1.redhat.com ([66.187.233.31]:58779 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S1030211AbWHCTpU (ORCPT ); Thu, 3 Aug 2006 15:45:20 -0400 Date: Thu, 3 Aug 2006 15:44:10 -0400 From: Dave Jones To: Adrian Bunk Cc: linux-kernel@vger.kernel.org, David Woodhouse , "H. Peter Anvin" Subject: Re: Userspace visible of 3 include/asm/ headers Message-ID: <20060803194410.GC16927@redhat.com> Mail-Followup-To: Dave Jones , Adrian Bunk , linux-kernel@vger.kernel.org, David Woodhouse , "H. Peter Anvin" References: <20060803193952.GF25692@stusta.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060803193952.GF25692@stusta.de> User-Agent: Mutt/1.4.2.2i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1272 Lines: 39 On Thu, Aug 03, 2006 at 09:39:52PM +0200, Adrian Bunk wrote: > Could anyone help me regarding the desired userspace visibility of the > following three headers under include/asm/? > > > Header : cpufeature.h > Architectures : i386, x86_64 > Is there any reason why this header is exported to userspace? Probably not. The only apps I've seen that care about feature bits define them theirselves rather than use these. > Header : setup.h > Architectures : i386, ia64, x86_64 > Contents: > - COMMAND_LINE_SIZE on ia64, x86_64 > - much more on i386 > Should COMMAND_LINE_SIZE be visible to userspace? Bootloaders probably need to know this. > Header : timex.h > Architectures : all architectures > Offers CLOCK_TICK_RATE on all architectures, but on some architectures > (like i386) this depends on the kernel configuration. > -> not a userspace header? Also longer term, CLOCK_TICK_RATE will make no sense should we go to a tickless kernel. Dave -- http://www.codemonkey.org.uk - 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/