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!
