Re: [PATCH 11/23] y2038: rusage: use __kernel_old_timeval

[Cyrill Gorcunov]

On Wed, Nov 13, 2019 at 11:02:12AM +0100, Arnd Bergmann wrote:
...
> 
> There are clearly too many time types at the moment, but I'm in the
> process of throwing out the ones we no longer need now.

Cool!

> I do have a number patches implementing other variants for the syscall,
> and I suppose that if we end up adding __kernel_rusage, that would
> have to go with a set of syscalls using 64-bit seconds/nanoseconds
> rather than the old 32/64 microseconds. I don't know what other
> changes remain that anyone would want from sys_waitid() now that
> it does support pidfd.
> 
> If there is still a need for a new waitid() replacement, that should take
> that new __kernel_rusage I think, but until then I hope we are fine
> with today's getrusage+waitid based on the current struct rusage.

Definitely.

> 
> BSD has wait6() to return separate rusage structures for 'self' and
> 'children', but I could not find any application (using the freebsd
> sources and debian code search) that actually uses that information,
> so there might not be any demand for that.

Thanks for detailed info Arnd!