linux-kernel - Re: [PATCH 1/7] time: Condense timekeeper.xtime into xtime

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Date:	Tue, 28 Feb 2012 09:30:14 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	John Stultz <john.stultz@...aro.org>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Richard Cochran <richardcochran@...il.com>
Subject: Re: [PATCH 1/7] time: Condense timekeeper.xtime into xtime_sec


* John Stultz <john.stultz@...aro.org> wrote:

> On Tue, 2012-02-28 at 09:06 +0100, Ingo Molnar wrote:
> > * John Stultz <john.stultz@...aro.org> wrote:
> > > +
> > > +static void timekeeper_set_xtime(struct timekeeper *tk,
> > > +					const struct timespec *ts)
> > 
> > Pointless (because ugly) line break.
> > 
> > > +{
> > > +	tk->xtime_sec = ts->tv_sec;
> > > +	tk->xtime_nsec = ts->tv_nsec << tk->shift;
> > > +}
> > > +
> > > +
> > > +static void timekeeper_xtime_add(struct timekeeper *tk,
> > > +					const struct timespec *ts)
> > 
> > Pointless (because ugly) line break.
> 
> Ack on your other comments, but I'm not sure I'm following you here.
> What would you rather see in this case?

Well, either not break the line really (it's just trivially 
above col80: it's 83 cols), or do a *sensible* line break - one 
of:

static void timekeeper_xtime_add(struct timekeeper *tk,
				 const struct timespec *ts)

(here the arguments align vertically)

Or:

static void
timekeeper_xtime_add(struct timekeeper *tk, const struct timespec *ts)

(here he return type is on a separate line)

Or, my favorite, just make the name shorter, because it's too 
long:

static void tk_xtime_add(struct timekeeper *tk, const struct timespec *ts)

Obviously this applies to other functions as well - the tk_*() 
method pattern should be applied consistently. Anyone reading 
time code will know that 'tk' is about the global timekeeper 
structure - no need to use the verbose name in methods.

Thanks,

	Ingo
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