From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: RFC: issues concerning the next NAPI interface Date: Mon, 27 Aug 2007 13:37:21 -0700 (PDT) Message-ID: <20070827.133721.59473971.davem@davemloft.net> References: <46D1D634.7060007@katalix.com> <20070826.185815.93042514.davem@davemloft.net> <200708271147.01890.ossthema@de.ibm.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: jchapman@katalix.com, shemminger@linux-foundation.org, akepner@sgi.com, netdev@vger.kernel.org, raisch@de.ibm.com, themann@de.ibm.com, linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org, meder@de.ibm.com, tklein@de.ibm.com, stefan.roscher@de.ibm.com To: ossthema@de.ibm.com Return-path: In-Reply-To: <200708271147.01890.ossthema@de.ibm.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Jan-Bernd Themann Date: Mon, 27 Aug 2007 11:47:01 +0200 > So the question is simply: Do we want drivers that need (benefit > from) a timer based polling support to implement their own timers > each, or should there be a generic support? I'm trying to figure out how an hrtimer implementation would even work. Would you start the timer from the chip interrupt handler? If so, that's taking two steps backwards as you've already taken all of the overhead of running the interrupt handler.