Messages in this thread |  | | | Subject | Re: [PATCH][RFC]: mutex: adaptive spin | | From | Peter Zijlstra <> | | Date | Tue, 06 Jan 2009 22:44:35 +0100 | |
On Tue, 2009-01-06 at 13:42 -0800, Paul E. McKenney wrote:
> Preemptable RCU needs to be faster. Got it -- and might have a way
> to do it by eliminating the irq disabling and cutting way back on the
> number of operations that must be performed. It would probably still
> be necessary to access the task structure.
>
> Or is something other than the raw performance of rcu_read_lock() and
> rcu_read_unlock() at issue here?
With Linus' mutex_spin_or_schedule() function the whole - keeping
owner's task_struct alive issue goes away,.. now if only the thing would
boot...
|  |