linux-kernel - Re: using kernel headers in libc headers

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Date:	Mon, 30 Nov 2009 11:40:22 -0600
From:	"Chris Friesen" <cfriesen@...tel.com>
To:	"H. Peter Anvin" <hpa@...or.com>
CC:	Ulrich Drepper <drepper@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: using kernel headers in libc headers

On 11/30/2009 11:01 AM, H. Peter Anvin wrote:

> A better way is to factor out subsets; if <linux/sched.h> has too many
> things, we can break out the POSIX parts into <linux/sched_posix.h> or
> (certainly better if we have more than one of these)
> <linux/sched/posix.h> which can also be included by <linux/sched.h>.
> 
> glibc can then choose to include or not include <linux/sched/posix.h>
> depending on its configuration.  The configuration macros remain a glibc
> internal detail.

Yes, absolutely.  Personally I find it much easier to open a separate
header file than to read code that is littered with #ifdefs.

Chris
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