Messages in this thread | | | Date | Thu, 4 Apr 2013 09:37:00 +0200 | From | Richard Cochran <> | Subject | Re: [RFC] perf: need to expose sched_clock to correlate user samples with kernel samples |
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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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