On Wed, 2014-01-15 at 10:10 -0500, Waiman Long wrote:
> On 01/14/2014 07:33 PM, Jason Low wrote:
> > * When there's no owner, we might have preempted between the
> > @@ -503,8 +504,10 @@ __mutex_lock_common(struct mutex *lock, long state,
> > unsigned int subclass,
> > *
On 01/14/2014 07:33 PM, Jason Low wrote:
This patch is needed for patch 3, but should also be beneficial in general.
The mutex->spin_mlock was introduced in order to ensure that only 1 thread
loops on lock->owner field at a time to reduce cache line contention. When
lock->owner is NULL and the l
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