On Tue, Jan 06, 2009 at 10:44:35PM +0100, Peter Zijlstra wrote: > 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... Cool! And I can relate to the "if only the thing would boot" part. ;-) Thanx, Paul -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
