Re: re-adding clocksource_get_next ?

From: john stultz
Date: Fri Apr 09 2010 - 16:59:03 EST


On Thu, Apr 8, 2010 at 11:53 PM, Giuseppe CAVALLARO
<peppe.cavallaro@xxxxxx> wrote:
> Hello!
> this function was removed in the past but I've not clear all the details.
> While testing LLTng, I wrote the patch, in attachment, that re-adds it
> again.
> The clocksource_get_next returns the first clock source available
> (without looking at the rating).
> In my environment, a clock source is a TMU channel (e.g. TMU1) and,
> indeed, clocksource_get_next works fine.

Could you provide some more details as to why you need raw access to
the clocksource, instead of using something like ktime_get(),
getrawmonotonic() or sched_clock()?

thanks
-john
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