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From: Mike Frysinger <vapier.adi@gmail.com>
Date: Tue, 13 Oct 2009 04:35:58 -0400
Message-ID: <8bd0f97a0910130135s152ee984sc8499766d3c0ef86@mail.gmail.com>
Subject: Re: [PATCH 1/6 RFC] arch/blackfin/kernel/process.c: Remove the BKL 
	from sys_execve
To: John Kacur <jkacur@redhat.com>
Cc: linux-kernel@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>,
       Frederic Weisbecker <fweisbec@gmail.com>,
       Vincent Sanders <vince@simtec.co.uk>, Ingo Molnar <mingo@elte.hu>,
       Christoph Hellwig <hch@infradead.org>,
       Alan Cox <alan@lxorguk.ukuu.org.uk>,
       Andrew Morton <akpm@linux-foundation.org>,
       Jonathan Corbet <corbet@lwn.net>, David Howells <dhowells@redhat.com>,
       Yoshinori Sato <ysato@users.sourceforge.jp>,
       Roman Zippel <zippel@linux-m68k.org>, Greg Ungerer <gerg@uclinux.org>,
       Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
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On Tue, Oct 13, 2009 at 04:27, John Kacur wrote:
> On Tue, 13 Oct 2009, Mike Frysinger wrote:
>> On Mon, Oct 12, 2009 at 18:33, John Kacur wrote:
>> > This looks like a cut-and-paste job.
>> > For example, compare this function to sys_execve in
>> > arch/x86/kernel/process_64.c
>> >
>> > and it is almost line by line the same, except the one in x86 nolonger has the
>> > big kernel lock. All of the functions called between the lock are generic
>> > and not specific to blackfin - thus, I believe it is safe to remove the
>> > bkl here.
>>
>> and it still boots/runs fine, so np here
>> Acked-by: Mike Frysinger <vapier@gentoo.org>
>
> Cool - are you testing on one of those nifty smp (or smp-like) blackfins?

no, this was a uniproc.  i could try a SMP Blackfin if you think it'll
make a difference.
-mike
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