From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753228AbdGFH1s (ORCPT ); Thu, 6 Jul 2017 03:27:48 -0400 Received: from mx2.suse.de ([195.135.220.15]:47338 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752497AbdGFH1q (ORCPT ); Thu, 6 Jul 2017 03:27:46 -0400 Subject: Re: [PATCH v7 15/18] xen/pvcalls: implement the ioworker functions To: Stefano Stabellini , xen-devel@lists.xen.org Cc: linux-kernel@vger.kernel.org, boris.ostrovsky@oracle.com, Stefano Stabellini References: <1499291458-30231-1-git-send-email-sstabellini@kernel.org> <1499291458-30231-15-git-send-email-sstabellini@kernel.org> From: Juergen Gross Message-ID: <337e9fad-4853-c27d-2194-c7024dd8e920@suse.com> Date: Thu, 6 Jul 2017 09:27:43 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: <1499291458-30231-15-git-send-email-sstabellini@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Language: de-DE Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/07/17 23:50, Stefano Stabellini wrote: > We have one ioworker per socket. Each ioworker goes through the list of > outstanding read/write requests. Once all requests have been dealt with, > it returns. > > We use one atomic counter per socket for "read" operations and one > for "write" operations to keep track of the reads/writes to do. > > We also use one atomic counter ("io") per ioworker to keep track of how > many outstanding requests we have in total assigned to the ioworker. The > ioworker finishes when there are none. > > Signed-off-by: Stefano Stabellini > Reviewed-by: Boris Ostrovsky Reviewed-by: Juergen Gross Thanks, Juergen