On Thu, 2007-11-01 at 15:58 -0700, David Miller wrote: > Since you're the one who wants to change the semantics and guarentees > of this interface, perhaps it might help if you did some greps around > the tree to see how alloc_percpu() is actually used. That's what > I did when I started running into trouble with your patches. This fancy new BDI stuff also lives off percpu_counter/alloc_percpu(). That means that for example each NFS mount also consumes a number of words - not quite sure from the top of my head how many, might be in the order of 24 bytes or something. I once before started looking at this, because the current alloc_percpu() can have some false sharing - not that I have machines that are overly bothered by that. I like the idea of a strict percpu region, however do be aware of the users. - To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html