Re: [RFC] perf: need to expose sched_clock to correlate usersamples with kernel samples

[Richard Cochran]

On Mon, Apr 08, 2013 at 12:05:52PM -0700, John Stultz wrote:
> 
> So thinking this through further, I'm worried we may _not_ be able
> to eventually enable this to be a vdso as I had earlier hoped.
> Mostly because I'm not sure how the fd -> file -> clock lookup could
> be done in userland (any ideas?).

How about a new clock operation, clock_install_vdso(), that lets the
process arrange for one dynamic clock to be reflected in its vdso
page?

Thanks,
Richard
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