From: Matthew Wilcox <matthew@wil.cx>
To: Adrian Bunk <bunk@stusta.de>
Cc: David Howells <dhowells@redhat.com>,
torvalds@osdl.org, akpm@osdl.org, linux-kernel@vger.kernel.org,
linux-arch@vger.kernel.org
Subject: Re: [PATCH 4/6] Implement a general log2 facility in the kernel
Date: Wed, 13 Sep 2006 10:31:36 -0600 [thread overview]
Message-ID: <20060913163136.GA2585@parisc-linux.org> (raw)
In-Reply-To: <20060913161734.GE3564@stusta.de>
On Wed, Sep 13, 2006 at 06:17:34PM +0200, Adrian Bunk wrote:
> On Wed, Sep 13, 2006 at 02:03:00PM +0100, David Howells wrote:
> > From: David Howells <dhowells@redhat.com>
> >
> > This facility provides three entry points:
> >
> > log2() Log base 2 of u32
> >...
>
> Considering that several arch maintainers have vetoed my patch to revert
> the -ffreestanding removal Andi sneaked in with his usual trick to hide
> generic patches as "x86_64 patch", such a usage of a libc function name
> with a signature different from the one defined in ISO/IEC 9899:1999 is
> a namespace violation that mustn't happen.
log2 is only defined if math.h gets included. If we're including math.h
at any point in the kernel itself (excluding the bootloader and similar),
we're already screwed six ways from sunday.
next prev parent reply other threads:[~2006-09-13 16:31 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-13 13:02 [PATCH 1/6] FRV: Fix fls() to handle bit 31 being set correctly David Howells
2006-09-13 13:02 ` [PATCH 2/6] FRV: Implement fls64() David Howells
2006-09-13 13:02 ` [PATCH 3/6] FRV: Optimise ffs() David Howells
2006-09-13 13:03 ` [PATCH 4/6] Implement a general log2 facility in the kernel David Howells
2006-09-13 15:57 ` Luck, Tony
2006-09-13 16:50 ` David Howells
2006-09-13 16:17 ` Adrian Bunk
2006-09-13 16:31 ` Matthew Wilcox [this message]
2006-09-13 16:38 ` Russell King
2006-09-13 16:56 ` David Howells
2006-09-13 18:38 ` Geert Uytterhoeven
2006-09-13 18:45 ` Russell King
2006-09-13 19:09 ` Geert Uytterhoeven
2006-09-13 13:03 ` [PATCH 5/6] Alter get_order() so that it can make use of long_log2() on a constant David Howells
2006-09-13 13:03 ` [PATCH 6/6] Alter roundup_pow_of_two() " David Howells
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