From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755609AbcGHQMR (ORCPT ); Fri, 8 Jul 2016 12:12:17 -0400 Received: from mail-db5eur01on0056.outbound.protection.outlook.com ([104.47.2.56]:45653 "EHLO EUR01-DB5-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755144AbcGHQMN (ORCPT ); Fri, 8 Jul 2016 12:12:13 -0400 Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=cmetcalf@mellanox.com; Subject: Re: [PATCH]: arm64: factor work_pending state machine to C To: Will Deacon References: <1459877922-15512-1-git-send-email-cmetcalf@mellanox.com> <1459877922-15512-13-git-send-email-cmetcalf@mellanox.com> <20160708154901.GF6493@arm.com> CC: Catalin Marinas , Mark Rutland , , From: Chris Metcalf Message-ID: <6e652143-841d-a73d-0184-a7be417cecd5@mellanox.com> Date: Fri, 8 Jul 2016 12:11:56 -0400 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 MIME-Version: 1.0 In-Reply-To: <20160708154901.GF6493@arm.com> Content-Type: text/plain; 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As I mentioned in my last patch series that included >> this patch [2], I'm hopeful that this version addresses the performance >> issues that were seen with Mark's original patch. This version tests the >> TIF flags prior to calling out to the loop in C code. > I still need to get round to measuring that again. This might also > conflict with a late fix I just sent for 4.7. > > Is your task isolation series all ready apart from this? It seems like > there's still discussion over there. No, discussion of task isolation is still ongoing. Alas :-) I'm trying to pick off low-hanging fruit where possible - I think this refactoring is independently good for arm64 regardless of whether task isolation makes it in for the 4.8 merge window or not, so figured I'd break it out. If you get a chance to remeasure, that will be great. Thanks! -- Chris Metcalf, Mellanox Technologies http://www.mellanox.com