From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758376Ab0BRRXH (ORCPT ); Thu, 18 Feb 2010 12:23:07 -0500 Received: from out02.mta.xmission.com ([166.70.13.232]:53652 "EHLO out02.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756933Ab0BRRXF (ORCPT ); Thu, 18 Feb 2010 12:23:05 -0500 To: Yinghai Lu Cc: Ingo Molnar , Thomas Gleixner , "H. Peter Anvin" , Andrew Morton , Rusty Russell , Suresh Siddha , linux-kernel@vger.kernel.org, Jeremy Fitzhardinge References: <1266029390-30907-1-git-send-email-yinghai@kernel.org> <4B7676BB.8030608@kernel.org> <4B772A54.1000000@kernel.org> <4B773CEB.9010609@kernel.org> <4B7CA9A1.3020806@kernel.org> <4B7CAADD.2060000@kernel.org> From: ebiederm@xmission.com (Eric W. Biederman) Date: Thu, 18 Feb 2010 09:22:45 -0800 In-Reply-To: <4B7CAADD.2060000@kernel.org> (Yinghai Lu's message of "Wed\, 17 Feb 2010 18\:50\:05 -0800") Message-ID: User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-XM-SPF: eid=;;;mid=;;;hst=in02.mta.xmission.com;;;ip=76.21.114.89;;;frm=ebiederm@xmission.com;;;spf=neutral X-SA-Exim-Connect-IP: 76.21.114.89 X-SA-Exim-Mail-From: ebiederm@xmission.com X-Spam-DCC: XMission; sa02 1397; Body=1 Fuz1=1 Fuz2=1 X-Spam-Combo: ;Yinghai Lu X-Spam-Relay-Country: X-Spam-Report: * -1.8 ALL_TRUSTED Passed through trusted hosts only via SMTP * 1.5 XMNoVowels Alpha-numberic number with no vowels * 0.0 T_TM2_M_HEADER_IN_MSG BODY: T_TM2_M_HEADER_IN_MSG * -3.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% * [score: 0.0000] * -0.0 DCC_CHECK_NEGATIVE Not listed in DCC * [sa02 1397; Body=1 Fuz1=1 Fuz2=1] * 0.0 T_TooManySym_01 4+ unique symbols in subject * 0.1 XMSolicitRefs_0 Weightloss drug * 0.0 XM_SPF_Neutral SPF-Neutral * 0.4 UNTRUSTED_Relay Comes from a non-trusted relay Subject: Re: [PATCH 2/3] x86: use vector_desc instead of vector_irq X-SA-Exim-Version: 4.2.1 (built Thu, 25 Oct 2007 00:26:12 +0000) X-SA-Exim-Scanned: Yes (on in02.mta.xmission.com) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Yinghai Lu writes: > Eric pointed out that radix tree version of irq_to_desc will magnify delay on the path > of handle_irq. > use vector_desc to reduce the calling of irq_to_desc. > > next step: need to change all ack, mask, umask, eoi for all irq_chip to take irq_desc > > -v2: irq should be unsigned in 32bit handle_irq according to Eric > also reset vector_desc for lguest in setup_irq > -v3: keep irq in x+execute_on_irq_stack() ... > > Signed-off-by: Yinghai Lu I can't spot any more problems. Acked-by: "Eric W. Biederman"