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

From	Thomas Gleixner <tglx@linutronix.de>
Newsgroups	linux.kernel
Subject	Re: [PATCH 2/2] time: alarmtimer: Add the trcepoints for alarmtimer
Date	2016-09-21 14:40 +0200
Message-ID	<sjOYF-yH-19@gated-at.bofh.it> (permalink)
References	(1 earlier) <siDsB-4oB-9@gated-at.bofh.it> <sjBRM-EC-33@gated-at.bofh.it> <sjGop-3D2-11@gated-at.bofh.it> <sjK8F-61A-29@gated-at.bofh.it> <sjOYF-yH-21@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Wed, 21 Sep 2016, Steven Rostedt wrote:
> On Wed, 21 Sep 2016 09:26:20 +0200 (CEST)
> Thomas Gleixner <tglx@linutronix.de> wrote:
> > 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

Thread

[PATCH 1/2] rtc: Add some dummy static inline functions Baolin Wang <baolin.wang@linaro.org> - 2016-09-18 08:10 +0200
  [PATCH 2/2] time: alarmtimer: Add the trcepoints for alarmtimer Baolin Wang <baolin.wang@linaro.org> - 2016-09-18 08:10 +0200
    Re: [PATCH 2/2] time: alarmtimer: Add the trcepoints for  alarmtimer Thomas Gleixner <tglx@linutronix.de> - 2016-09-21 00:40 +0200
      Re: [PATCH 2/2] time: alarmtimer: Add the trcepoints for alarmtimer Baolin Wang <baolin.wang@linaro.org> - 2016-09-21 05:30 +0200
        Re: [PATCH 2/2] time: alarmtimer: Add the trcepoints for  alarmtimer Thomas Gleixner <tglx@linutronix.de> - 2016-09-21 09:30 +0200
          Re: [PATCH 2/2] time: alarmtimer: Add the trcepoints for alarmtimer Baolin Wang <baolin.wang@linaro.org> - 2016-09-21 13:00 +0200
          Re: [PATCH 2/2] time: alarmtimer: Add the trcepoints for  alarmtimer Thomas Gleixner <tglx@linutronix.de> - 2016-09-21 14:40 +0200
            Re: [PATCH 2/2] time: alarmtimer: Add the trcepoints for alarmtimer Steven Rostedt <rostedt@goodmis.org> - 2016-09-21 15:40 +0200
          Re: [PATCH 2/2] time: alarmtimer: Add the trcepoints for alarmtimer Steven Rostedt <rostedt@goodmis.org> - 2016-09-21 14:40 +0200
  Re: [PATCH 1/2] rtc: Add some dummy static inline functions Thomas Gleixner <tglx@linutronix.de> - 2016-09-20 23:40 +0200
    Re: [PATCH 1/2] rtc: Add some dummy static inline functions Baolin Wang <baolin.wang@linaro.org> - 2016-09-21 04:10 +0200

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