On Fri, 29 Jan 2010, Benjamin Herrenschmidt wrote: > > like returning a fd to poll() on ? :-)
Well, there's the possibility of async polling (rather than the
synchronous wait that ptrace forces now), but there are other advantages
to having a "connection" model - like not having to look up the child
process every time like ptrace does now.
Although 'find_task_by_vpid()' is probably cheap enough that nobody really
cares. We do a fair job at those hash tables.
Linus
