On 04/18/2014 04:13 AM, Peter Zijlstra wrote:
On Thu, Apr 17, 2014 at 05:20:31PM -0400, Waiman Long wrote:
+ while ((val = atomic_read(&lock->val))& _Q_LOCKED_MASK)
+ arch_mutex_cpu_relax();
That was a cpu_relax().
Yes, but arch_mutex_cpu_relax() is the same as cpu_relax() for x86.
Yeah, so why bother typing more?
Let the s390 people sort that if/when they try and make this work for
them.
OK, I can revert the change if you wish. I have no objection for that.
-Longman
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