Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932922Ab3ICNzq (ORCPT ); Tue, 3 Sep 2013 09:55:46 -0400 Received: from mail-yh0-f45.google.com ([209.85.213.45]:46880 "EHLO mail-yh0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932792Ab3ICNzp (ORCPT ); Tue, 3 Sep 2013 09:55:45 -0400 Date: Tue, 3 Sep 2013 09:55:41 -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: <20130903135541.GB10522@htj.dyndns.org> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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: 782 Lines: 22 Hello, On Mon, Sep 02, 2013 at 10:59:07AM +0200, Alexander Gordeev wrote: > This series is aimed to conserve on othewise wasted interrupt > resources for 10 of 16 unused MSI vectors for AHCI devices on > Intel chipsets. 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. 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/