Messages in this thread | | | Subject | Re: [PATCH -tip/master 5/7] locking/mutex: Use MUTEX_SPIN_ON_OWNER when appropriate | From | Jason Low <> | Date | Wed, 30 Jul 2014 08:19:56 -0700 |
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On Sun, 2014-07-27 at 22:18 -0700, Davidlohr Bueso wrote: > 4badad35 (locking/mutex: Disable optimistic spinning on some > architectures) added a ARCH_SUPPORTS_ATOMIC_RMW flag to > disable the mutex optimistic feature on specific archs. > > Because CONFIG_MUTEX_SPIN_ON_OWNER only depended on DEBUG and > SMP, it was ok to have the ->owner field conditional a bit > flexible. However by adding a new variable to the matter, > we can waste space with the unused field, ie: CONFIG_SMP && > (!CONFIG_MUTEX_SPIN_ON_OWNER && !CONFIG_DEBUG_MUTEX). > > Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Acked-by: Jason Low <jason.low2@hp.com>
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