From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Tue, 14 Feb 2006 05:02:02 +0000 (GMT) Received: from ns.miraclelinux.com ([219.118.163.66]:39374 "EHLO mail01.miraclelinux.com") by ftp.linux-mips.org with ESMTP id S8133459AbWBNE6h (ORCPT ); Tue, 14 Feb 2006 04:58:37 +0000 Received: from mail01 (localhost.localdomain [127.0.0.1]) by mail01.miraclelinux.com (Postfix) with ESMTP id EEBCE31C332; Tue, 14 Feb 2006 14:04:45 +0900 (JST) Received: from localhost.localdomain (sshgate.miraclelinux.com []) by mail01.miraclelinux.com ([10.1.0.10]); Tue, 14 Feb 2006 05:04:45 +0000 Received: by localhost.localdomain (Postfix, from userid 1000) id 967CA420238; Tue, 14 Feb 2006 14:04:43 +0900 (JST) Message-Id: <20060214050443.468528000@localhost.localdomain> References: <20060214050351.252615000@localhost.localdomain> Date: Tue, 14 Feb 2006 14:04:00 +0900 From: Akinobu Mita To: linux-kernel@vger.kernel.org Cc: akpm@osdl.org, Russell King , Ian Molton , David Howells , Hirokazu Takata , Greg Ungerer , linux-mips@linux-mips.org, parisc-linux@parisc-linux.org, sparclinux@vger.kernel.org, ultralinux@vger.kernel.org, Miles Bader , Akinobu Mita Subject: [patch 09/47] generic ffz() Content-Disposition: inline; filename=ffz-bitops.patch Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 10437 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: mita@miraclelinux.com Precedence: bulk X-list: linux-mips This patch introduces the C-language equivalent of the function: unsigned long ffz(unsigned long word); In include/asm-generic/bitops/ffz.h This code largely copied from: include/asm-parisc/bitops.h Signed-off-by: Akinobu Mita include/asm-generic/bitops/ffz.h | 12 ++++++++++++ 1 files changed, 12 insertions(+) Index: 2.6-rc/include/asm-generic/bitops/ffz.h =================================================================== --- /dev/null +++ 2.6-rc/include/asm-generic/bitops/ffz.h @@ -0,0 +1,12 @@ +#ifndef _ASM_GENERIC_BITOPS_FFZ_H_ +#define _ASM_GENERIC_BITOPS_FFZ_H_ + +/* + * ffz - find first zero in word. + * @word: The word to search + * + * Undefined if no zero exists, so code should check against ~0UL first. + */ +#define ffz(x) __ffs(~(x)) + +#endif /* _ASM_GENERIC_BITOPS_FFZ_H_ */ --