Subject: __HAVE_ARCH_CMPXCHG on ARM?

From: [email-masked] (Sebastian Andrzej Siewior)
Date: Wed, 18 Feb 2015 11:44:59 +0100

* Josh Cartwright | 2015-02-03 13:27:30 [-0600]:

>                 native         native
>                cmpxchg (UP)   cmpxchg (SMP)    __HAVE_ARCH_CMPXCHG
>         xtensa     X               X

This one does not always have cmpxchg on UP (only the SMP variant which
provides atomic operation).

>  Josh

Sebastian