* Arnd Bergmann [off-list ref] wrote:

Sure, no problem. Do you have an opinion on the question I raised in the
first patch [1], i.e. whether we actually want this to be done this way in the
kernel, or one of the other approaches I described there?

So this looks like the most forward looking variant:

a) deprecate the wait4() and getrusage() system calls, and create
   a set of kernel interfaces based around a newly defined structure that
   could solve multiple problems at once, e.g. provide more fine-grained
   timestamps. The C library could then implement the posix interfaces
   on top of the new system calls.

... but given the pretty long propagation time of new ABIs, is this a good 
solution? What would the limitations/trade-offs be on old-ABI systems?

Thanks,

	Ingo