From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751756AbaLRW3Q (ORCPT ); Thu, 18 Dec 2014 17:29:16 -0500 Received: from casper.infradead.org ([85.118.1.10]:38474 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751125AbaLRW3O (ORCPT ); Thu, 18 Dec 2014 17:29:14 -0500 Date: Thu, 18 Dec 2014 23:28:46 +0100 From: Peter Zijlstra To: Khalid Aziz Cc: tglx@linutronix.de, corbet@lwn.net, mingo@redhat.com, hpa@zytor.com, riel@redhat.com, akpm@linux-foundation.org, rientjes@google.com, ak@linux.intel.com, mgorman@suse.de, raistlin@linux.it, kirill.shutemov@linux.intel.com, atomlin@redhat.com, avagin@openvz.org, gorcunov@openvz.org, serge.hallyn@canonical.com, athorlton@sgi.com, oleg@redhat.com, vdavydov@parallels.com, daeseok.youn@gmail.com, keescook@chromium.org, yangds.fnst@cn.fujitsu.com, sbauer@eng.utah.edu, vishnu.ps@samsung.com, axboe@fb.com, paulmck@linux.vnet.ibm.com, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-api@vger.kernel.org Subject: Re: [PATCH RESEND v4] sched/fair: Add advisory flag for borrowing a timeslice Message-ID: <20141218222846.GH30905@twins.programming.kicks-ass.net> References: <1418928259-6311-1-git-send-email-khalid.aziz@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1418928259-6311-1-git-send-email-khalid.aziz@oracle.com> User-Agent: Mutt/1.5.21 (2012-12-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Dec 18, 2014 at 11:44:19AM -0700, Khalid Aziz wrote: > sched/fair: Add advisory flag for borrowing a timeslice yuck hatred and much of that. Also, you fail to explain why a kernel side spin futex-lock is not an option.