Re: [rfc] aio-core for 2.5.29 (Re: async-io API registration for 2.5.29)

Chris Wedgwood
2002-08-01T19:14:57Z

On Thu, Aug 01, 2002 at 09:30:04AM -0700, Linus Torvalds wrote:

A 2% error may not be a big problem for most people, of course. But it
might be a huge problem for others. Those people would have to do their
own re-calibration..

How about export the value via a syscall and also export an 'error'
which for now could just be set to 5% or something conservative and
refined later if necessary or cleanup on other architectures,
something like:

/* export monotonically increasing nanoseconds since boot to
user-space. kt_time is a relative value, it does NOT necessarily
imply nanoseconds since boot. kt_err should be greater than
1stdev of the error in kt_time */

struct kern_time {
__u64 kt_ns;
__u64 kt_err;
};

--cw