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Re: MIPS: Get rid of branches to .subsections.

To: Ralf Baechle <>
Subject: Re: MIPS: Get rid of branches to .subsections.
From: "Maciej W. Rozycki" <>
Date: Mon, 23 Aug 2010 12:25:33 +0100 (BST)
Cc:, Paul Gortmaker <>
In-reply-to: <>
Original-recipient: rfc822;
References: <> <> <>
User-agent: Alpine 2.00 (LFD 1167 2008-08-23)
On Mon, 23 Aug 2010, Ralf Baechle wrote:

> >  Are you sure it won't reorder anything there that actually relies on the 
> > atomic access to have succeeded?  I suggest adding barrier() after the 
> > loop.
> None of the things that were touched by the code had any barrier
> functionality  Some of the functions such as atomic_add don't provide
> memory barriers but where needed a barrier was always provided by C code
> near the end of the function, for example in atomic_add_return.

 OK, if you are sure this is safe, then I see no problem here.


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