linux-kernel - Re: [RFC][PATCH 4/4] time: Do leapsecond adjustment in gettime fastpaths

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Message-ID: <20150605090433.GC1528@localhost.localdomain>
Date:	Fri, 5 Jun 2015 11:04:33 +0200
From:	Richard Cochran <richardcochran@...il.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	John Stultz <john.stultz@...aro.org>,
	Ingo Molnar <mingo@...nel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Prarit Bhargava <prarit@...hat.com>,
	Daniel Bristot de Oliveira <bristot@...hat.com>,
	Jan Kara <jack@...e.cz>, Jiri Bohac <jbohac@...e.cz>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Shuah Khan <shuahkh@....samsung.com>
Subject: Re: [RFC][PATCH 4/4] time: Do leapsecond adjustment in gettime
 fastpaths

On Fri, Jun 05, 2015 at 09:29:13AM +0200, Peter Zijlstra wrote:
> That leaves the question; for who is this exact second edge important?

Distributed applications using the UTC time scale.

Many control applications are done with a 1 millisecond period.
Having the time wrong by a second for 10 or 100 loops is bad news.

Thanks,
Richard
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