On Tuesday 29 August 2006 20:30, David Howells wrote: > Andi Kleen <[EMAIL PROTECTED]> wrote: > > > BTW maybe it would be a good idea to switch the wait list to a hlist, > > then the last user in the queue wouldn't need to > > touch the cache line of the head. Or maybe even a single linked > > list then some more cache bounces might be avoidable. > > You need a list_head to get O(1) push at one end and O(1) pop at the other.
The poper should know its node address already because it's on its own stack. > In addition a singly-linked list makes interruptible ops non-O(1) also. When they are interrupted I guess? Hardly a problem to make that slower. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
