Re: [PATCH v2 optional 3/3] mutex: back out architecture specific check for negative mutex count

2013-04-16 Thread Waiman Long
On 04/16/2013 06:05 AM, Will Deacon wrote: On Mon, Apr 15, 2013 at 03:37:59PM +0100, Waiman Long wrote: If it is confirmed that all the supported architectures can allow a negative mutex count without incorrect behavior, we can then back out the architecture specific change and allow the mutex c

Re: [PATCH v2 optional 3/3] mutex: back out architecture specific check for negative mutex count

2013-04-16 Thread Will Deacon
On Mon, Apr 15, 2013 at 03:37:59PM +0100, Waiman Long wrote: > If it is confirmed that all the supported architectures can allow a > negative mutex count without incorrect behavior, we can then back > out the architecture specific change and allow the mutex count to > go to any negative number. Tha

[PATCH v2 optional 3/3] mutex: back out architecture specific check for negative mutex count

2013-04-15 Thread Waiman Long
If it is confirmed that all the supported architectures can allow a negative mutex count without incorrect behavior, we can then back out the architecture specific change and allow the mutex count to go to any negative number. That should further reduce contention for non-x86 architecture. If this