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To: Linus Torvalds <torvalds@transmeta.com>,
        Roman Zippel <zippel@linux-m68k.org>
Cc: David Howells <dhowells@redhat.com>,
        Jeff Garzik <jgarzik@mandrakesoft.com>, davidm@hpl.hp.com,
        "David S. Miller" <davem@redhat.com>, anton@samba.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH] move task_struct allocation to arch 
In-Reply-To: Message from Roman Zippel <zippel@linux-m68k.org> 
   of "Fri, 15 Feb 2002 14:49:23 +0100." <Pine.LNX.4.33.0202151439160.1001-100000@serv> 
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Date: Fri, 15 Feb 2002 14:07:55 +0000
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From: David Howells <dhowells@redhat.com>
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Hi Linus,

Roman Zippel <zippel@linux-m68k.org> wrote:
> As I mentioned before I more like the byte approach, since atomic bit
> field handling is quite expensive on most architectures, where a simple
> set/clear byte is only one or two instructions, if there is byte
> load/store instruction. So I'd really like to see to leave the decision to
> the architecture, whether to use bit or byte fields.

Should I move the convenience bit operations back to the arch header, so that
the M68K guys can have byte-sized flags (which they can use TAS/TST on)?

David
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