linux-kernel - Re: [PATCH] bitops: move BITS() macro to the bitops file

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20130807105408.GB18272@pd.tnic>
Date:	Wed, 7 Aug 2013 12:54:08 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Linus Walleij <linus.walleij@...aro.org>
Cc:	linux-kernel@...r.kernel.org, Akinobu Mita <mita@...aclelinux.com>
Subject: Re: [PATCH] bitops: move BITS() macro to the bitops file

On Wed, Aug 07, 2013 at 11:06:19AM +0200, Linus Walleij wrote:
> This macro was invented by Mattias Nilsson for the usecase
> where you want to set a sequence of bits inside a n-bit
> word, while leaving the head and tail of the sequence all
> zeroes. For example:
> 
>   #include <linux/bitops.h>
> 
>   u16 mask = BITS(4, 12);
> 
> Yields a mask like this:
> 
>   0001111111110000
> 
> This patch moves the construct out of the MFD PRCMU driver
> and make it available for common use, after noticing in a
> review or two that it would be useful for others.

Well, we have similar GEN_MASK and GENMASK macros around the tree. Maybe
we could unify them all?

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
--
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/