Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760114Ab3ICOKB (ORCPT ); Tue, 3 Sep 2013 10:10:01 -0400 Received: from mail-ve0-f171.google.com ([209.85.128.171]:40616 "EHLO mail-ve0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760085Ab3ICOJ7 (ORCPT ); Tue, 3 Sep 2013 10:09:59 -0400 Date: Tue, 3 Sep 2013 10:09:54 -0400 From: Tejun Heo To: Alexander Gordeev Cc: linux-kernel@vger.kernel.org, x86@kernel.org, linux-pci@vger.kernel.org, linux-ide@vger.kernel.org, Ingo Molnar , Joerg Roedel , Jan Beulich , Bjorn Helgaas Subject: Re: [PATCH 0/4] AHCI: Conserve interrupts with pci_enable_msi_block_part() interface Message-ID: <20130903140954.GC10522@htj.dyndns.org> References: <20130903135541.GB10522@htj.dyndns.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130903135541.GB10522@htj.dyndns.org> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 798 Lines: 20 On Tue, Sep 03, 2013 at 09:55:41AM -0400, Tejun Heo wrote: > Hmmm.... I've been looking at the code and and a curiosity. Why does > multiple MSI support implicitly enabled threaded IRQ handling? Why > are those two linked? Also, do you have any numbers to show that this > actually is better? Handling the processing off to a thread isn't a > light operation. Also, it probably is a good idea to skip dummy ports when requesting irqs from ahci_host_activate(), which BTW should probably be renamed to ahci_host_activate_mmsi(). Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/