[rtc-linux] Re: [PATCH 2/2] time: alarmtimer: Add the trcepoints for alarmtimer

On Wed, 21 Sep 2016, Steven Rostedt wrote:

On Wed, 21 Sep 2016 09:26:20 +0200 (CEST)
Thomas Gleixner [off-list ref] wrote:

quoted

A single u64 does not take more storage space than this and it's a single
store.

So to use rtc_tm_to_time64()? Is the work to do the calculations of the
conversion faster than a bunch of stores that are going to be in hot
cache?

Look at the call site. It has already the scalar nsec value and it does a
conversion to rtc time in order to trace it.

Ditto for the other tracepoints where the conversion from scalar nsec is
done in the tracepoint itself.

Thanks,

	tglx

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