From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: [PATCH 0/4] AHCI: Conserve interrupts with pci_enable_msi_block_part() interface Date: Tue, 3 Sep 2013 12:24:11 -0400 Message-ID: <20130903162411.GA25040@mtj.dyndns.org> References: <20130903135541.GB10522@htj.dyndns.org> <20130903145719.GB14221@dhcp-26-207.brq.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20130903145719.GB14221@dhcp-26-207.brq.redhat.com> Sender: linux-kernel-owner@vger.kernel.org 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 List-Id: linux-ide@vger.kernel.org Hello, On Tue, Sep 03, 2013 at 04:57:19PM +0200, Alexander Gordeev wrote: > Multiple MSI support enables threaded IRQ handling, because at the time of > posting I did not want to intrude into the existing single-MSI codebase while > multiple MSI/multipe CPU approach gained good numbers (below). Please separate out threaded IRQ support from multiple MSI. > Besides, the ports interrupt handling moved from the interrupt-disabled > hardware context to the interrupt-enabled threaded context and also ports > got per-port locks instead of the single host lock. AFAIR I did not post > the numbers, but it was something close to no-contention. Which is a completely separate issue, right? Let's please not mix the two. Thanks. -- tejun