[PATCH] Unify pthread_spin_[try]lock implementations.

[Joseph S. Myers]

On Wed, 15 Aug 2012, Maxim Kuvyrkov wrote:

> As before the patch touches ARM, HPPA, M68K and MIPS.

The ARM and MIPS changes are OK.  (ARM and MIPS systems are too diverse 
for it to be particularly meaningful to give a rationale for a particular 
arbitrary choice of SPIN_LOCK_READS_BETWEEN_CMPXCHG.)

-- 
Joseph S. Myers
joseph@codesourcery.com