From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: [PATCH net-next] softirq: reduce latencies Date: Thu, 03 Jan 2013 22:53:27 -0800 Message-ID: <1357282407.21409.28206.camel@edumazet-glaptop> References: <1357216132.21409.24107.camel@edumazet-glaptop> <20130103124608.136fd65b.akpm@linux-foundation.org> <1357252875.21409.26390.camel@edumazet-glaptop> <87r4m1r0hm.fsf@sejong.aot.lge.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: Andrew Morton , David Miller , netdev , "linux-kernel@vger.kernel.org" , Tom Herbert To: Namhyung Kim Return-path: Received: from mail-pb0-f45.google.com ([209.85.160.45]:42511 "EHLO mail-pb0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751213Ab3ADGxb (ORCPT ); Fri, 4 Jan 2013 01:53:31 -0500 In-Reply-To: <87r4m1r0hm.fsf@sejong.aot.lge.com> Sender: netdev-owner@vger.kernel.org List-ID: 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.