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Subject: Re: [PATCH net-next] softirq: reduce latencies
From: Eric Dumazet <eric.dumazet@gmail.com>
To: Namhyung Kim <namhyung@kernel.org>
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Date: Thu, 03 Jan 2013 22:53:27 -0800
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On Fri, 2013-01-04 at 14:16 +0900, Namhyung Kim wrote:

> Probably a silly question:
> 
> Why not using ktime rather than jiffies for this?

ktime is too expensive on some hardware.

Here we only want a safety belt, no need for high time resolution.