From: Linus Torvalds <torvalds@linux-foundation.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Sam Ravnborg <sam@ravnborg.org>,
Jaswinder Singh Rajput <jaswinderrajput@gmail.com>,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [mingo@elte.hu: [git pull] headers_check fixes]
Date: Tue, 27 Jan 2009 15:29:18 -0800 (PST) [thread overview]
Message-ID: <alpine.LFD.2.00.0901271527340.3123@localhost.localdomain> (raw)
In-Reply-To: <497F9740.4000505@zytor.com>
On Tue, 27 Jan 2009, H. Peter Anvin wrote:
>
> The intent of headers_check is to try to catch people who put things that
> depend on CONFIG_* stuff in exported headers (which, as we have seen, have
> been too sadly common.) If we declare that the export process will treat all
> CONFIG_* as undefined, we do lose some coverage but potentially end up with
> cleaner code. Not sure which is worse...
Do you think the "fix headers_check" patches spend lots of time analyzing
things? I bet no. They just try to make the warning go away, so you don't
actually end up with any more "coverage" anyway. Quite the reverse -
instead of having a simple rule ("CONFIG_xyz options simply do not exist
in user space"), you end up having ad-hoc hacks on a per-fix basis.
Linus
next prev parent reply other threads:[~2009-01-27 23:30 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20090127222825.GA27097@elte.hu>
2009-01-27 22:57 ` Linus Torvalds
2009-01-27 23:22 ` H. Peter Anvin
2009-01-27 23:29 ` Linus Torvalds [this message]
2009-01-28 0:12 ` H. Peter Anvin
2009-01-28 0:19 ` Linus Torvalds
2009-01-28 1:02 ` H. Peter Anvin
2009-01-27 23:31 ` Ingo Molnar
2009-01-27 23:43 ` Linus Torvalds
2009-01-27 23:51 ` Vegard Nossum
2009-01-30 14:01 ` Jaswinder Singh Rajput
2009-01-30 18:20 ` Ingo Molnar
2009-01-28 0:03 ` Harvey Harrison
2009-01-28 1:36 ` Jaswinder Singh Rajput
2009-01-28 12:37 ` Arnd Bergmann
2009-01-28 17:48 ` H. Peter Anvin
2009-01-28 19:22 ` Harvey Harrison
2009-01-28 19:44 ` Linus Torvalds
2009-01-28 20:03 ` Harvey Harrison
2009-01-28 21:25 ` H. Peter Anvin
2009-01-28 21:58 ` [PATCH] x86: do not expose CONFIG_BSWAP to userspace Harvey Harrison
2009-01-28 22:13 ` Linus Torvalds
2009-01-28 22:40 ` Harvey Harrison
2009-01-30 20:37 ` Pavel Machek
2009-01-28 22:15 ` H. Peter Anvin
2009-01-28 22:38 ` Harvey Harrison
2009-01-28 23:04 ` Ben Pfaff
2009-01-30 18:20 ` H. Peter Anvin
2009-01-28 23:27 ` H. Peter Anvin
2009-01-28 23:36 ` Harvey Harrison
2009-01-28 23:47 ` H. Peter Anvin
2009-02-03 18:19 ` Arnd Bergmann
2009-01-31 18:43 ` Maciej W. Rozycki
2009-01-31 20:24 ` H. Peter Anvin
2009-01-28 23:24 ` Arnd Bergmann
2009-01-28 23:30 ` H. Peter Anvin
2009-01-28 20:49 ` [mingo@elte.hu: [git pull] headers_check fixes] Sam Ravnborg
2009-01-28 21:23 ` H. Peter Anvin
2009-01-28 21:06 ` Sam Ravnborg
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