linux-kernel - Re: [PATCH v2] rtc: Add tracepoints for RTC system

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Date:   Wed, 13 Dec 2017 12:16:03 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Baolin Wang <baolin.wang@...aro.org>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>, linux-rtc@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] rtc: Add tracepoints for RTC system

On Wed, Dec 13, 2017 at 12:04:26PM +0100, Alexandre Belloni wrote:

> Also, I think we could try having only the time64_t in the ring buffer.
> Maybe I'm wrong but I think tools reading that buffer can do the
> conversion themselves. Maybe I don't understand correctly how
> tracepoints work and this doesn't make sense, tell me.

Tools reading the buffer can do the conversion themselves but it's also
useful for users to just view the log directly via tracing/trace
sometimes.  OTOH the whole point is to be low overhead so...

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