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Re: Correct robust mutex / PI futex kernel assumptions (bug 9894)


From: "Joseph S. Myers" <joseph@codesourcery.com>
Date: Tue, 25 Mar 2014 22:55:03 +0000

> On Tue, 25 Mar 2014, David Miller wrote:
> 
>> From: "Joseph S. Myers" <joseph@codesourcery.com>
>> Date: Tue, 25 Mar 2014 15:35:00 +0000
>> 
>> > In that case, I'd like to propose the SPARC changes in the patch as-is 
>> > (i.e. not assuming these features for 32-bit SPARC).
>> 
>> This is a very serious regression you are adding to the tree.
> 
> It's a few conditional branches (that are already present in the default 
> --enable-kernel=2.6.16 configuration) in order to avoid another regression 
> (namely, the change to 2.6.32 default causing features to be assumed by 
> default when they aren't present).  But if you'd prefer the latter, I can 
> drop the SPARC parts of this patch and bug 9894 can be left open for 
> 32-bit SPARC after the default version changes.

Actually, it turns out you can simply test for the CPP macro __sparc_v9__


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