linux-kernel - Re: [PATCH] [RFC] time: Improve negative offset handling in timekeeping_inject

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Date:	Mon, 24 Feb 2014 11:50:02 -0800
From:	John Stultz <john.stultz@...aro.org>
To:	Thomas Gleixner <tglx@...utronix.de>
CC:	LKML <linux-kernel@...r.kernel.org>,
	Prarit Bhargava <prarit@...hat.com>,
	Richard Cochran <richardcochran@...il.com>
Subject: Re: [PATCH] [RFC] time: Improve negative offset handling in timekeeping_inject_offset

On 02/22/2014 02:01 AM, Thomas Gleixner wrote:
> On Fri, 21 Feb 2014, John Stultz wrote:
>> But yes, we can just leave it as is, and it is a bit academic. But
> To be honest, I was mostly arguing due to the academic nature. :)
>
> The important point is that we restrict it to -1e9 < tv_nsec <
> 1e9. The signed/unsigned combos are not that interesting as long as
> our internal helpers cope nicely with that.

And for this patch it does check abs(tv_nsec) is sane.

I still think the patch is a good idea, so I'll submit it again after
further testing. But if folks object, then I'll drop it.

thanks
-john

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