From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: [PATCH 11/12] libata: use IRQ expecting Date: Wed, 14 Jul 2010 03:58:07 -0400 Message-ID: <4C3D6E0F.20605@garzik.org> References: <1276443098-20653-1-git-send-email-tj@kernel.org> <1276443098-20653-12-git-send-email-tj@kernel.org> <4C23F6C1.7070603@garzik.org> <4C245E50.7090701@kernel.org> <4C2577F2.4030005@garzik.org> <4C25BAD2.4070705@kernel.org> <4C25C551.8000404@garzik.org> <4C25CC18.2070507@kernel.org> <4C2DFAB0.3020703@kernel.org> <4C384620.8040808@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-gy0-f174.google.com ([209.85.160.174]:43206 "EHLO mail-gy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751951Ab0GNH6M (ORCPT ); Wed, 14 Jul 2010 03:58:12 -0400 In-Reply-To: <4C384620.8040808@kernel.org> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Tejun Heo Cc: mingo@elte.hu, tglx@linutronix.de, bphilips@suse.de, yinghai@kernel.org, akpm@linux-foundation.org, torvalds@linux-foundation.org, linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, stern@rowland.harvard.edu, gregkh@suse.de, khali@linux-fr.org On 07/10/2010 06:06 AM, Tejun Heo wrote: > On 07/02/2010 04:41 PM, Tejun Heo wrote: >> Hello, Jeff. >> >> So, something like the following. This should be applied on top of >> the two previous libata patches. The amount of code in the hot path >> is very small. Compared to the cpu actually taking an interrupt and >> accessing hardware, it should be negligible, and this will give us >> working and acceptably performing systems in the presence of most >> types of IRQ problems. > > Ping. Give me another day or two. I'm working up an alternate patch for demonstration (still use the irq-expecting api, but differently). Jeff