Re: ARMv5 and atomic operations

[Andrew Haley <aph@xxxxxxxxxx>]

On 04/23/2012 03:41 AM, Brendan Conoboy wrote:
> On 04/22/2012 07:34 PM, Chris Tyler wrote:
>> > What are some examples of these?
> First is jemalloc which now has a not-entirely satisfactory patch in 
> place.  The one provoking this email is openmpi.  It's wanting, but 
> missing, dmb, ldrex{,d}, strex{,d}.  There are others.  Basically when 
> you see a package working on armv7hl but failing on armv5tel there's a 
> good chance it's due to missing instructions.

This is s bug in jemalloc.  It should just use the gcc builtins.
If you want I'll provide a pach.

Andrew.


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