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

[Steven Rostedt]

On Wed, 2012-11-14 at 14:26 -0800, John Stultz wrote:

> > There's also trace_clock_counter() which isn't even a clock :-)  It's
> > just a incremental atomic counter that goes up every time it's called.
> > This is the most synced clock, but is absolutely meaningless for
> > timestamps. It's just a way to show ordered events.
> 
> Oof. This is getting uglier. I'd really prefer not to expose all these 
> different internal clocks out userland. Especially via clock_gettime().

Actually, I would be happy to just expose them to modules. As things
like hwlat_detect could use them.

-- Steve


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