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

[Richard Cochran]

On Wed, Apr 03, 2013 at 10:50:57AM -0700, John Stultz wrote:
> 
> I get the reasoning around reusing the fd we already have, but is
> the possibility of a dynamic chardev pathname really a big concern?

I have been following this thread, and, not knowing very much about
perf, I would think that the userland can easily open a second file
(the dynamic posix clock chardev) in order to get these time stamps.

> Maybe can we extend the dynamic posix clock code to work on more
> then just the chardev? Although I worry about multiplexing too much
> functionality on the file.

I don't yet see a need for that, but if we do, then it should work in
a generic way, and not as a list of special cases, like we saw in the
patch.

Thanks,
Richard
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