From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753439AbbDCIWG (ORCPT ); Fri, 3 Apr 2015 04:22:06 -0400 Received: from szxga03-in.huawei.com ([119.145.14.66]:50009 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753310AbbDCIVx (ORCPT ); Fri, 3 Apr 2015 04:21:53 -0400 From: Zhiqiang Zhang To: , , , CC: Subject: [PATCH] Documentation/scheduler/sched-deadline.txt: correct definition of density as C_i/min{D_i,P_i} Date: Fri, 3 Apr 2015 16:18:33 +0800 Message-ID: <1428049113-62546-1-git-send-email-zhangzhiqiang.zhang@huawei.com> X-Mailer: git-send-email 1.9.0 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.107.197.247] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020201.551E4D9A.00C0,ss=1,re=0.001,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 0fdcf1cc8a4bde355d95cc6c1561b17e Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >>From the contex,the definition of the destiny of a task C_i/min{D_i,T_i},where T_i is not referred before, should be substituted by C_i/min{D_i,P_i}. ---------------------------------------- Signed-off-by: Zhiqiang Zhang --- Documentation/scheduler/sched-deadline.txt | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/scheduler/sched-deadline.txt b/Documentation/scheduler/sched-deadline.txt index 21461a0..194664b 100644 --- a/Documentation/scheduler/sched-deadline.txt +++ b/Documentation/scheduler/sched-deadline.txt @@ -169,8 +169,8 @@ CONTENTS of all the tasks executing on a CPU if and only if the total utilisation of the tasks running on such a CPU is smaller or equal than 1. If D_i != P_i for some task, then it is possible to define the density of - a task as C_i/min{D_i,T_i}, and EDF is able to respect all the deadlines - of all the tasks running on a CPU if the sum sum_i C_i/min{D_i,T_i} of the + a task as C_i/min{D_i,P_i}, and EDF is able to respect all the deadlines + of all the tasks running on a CPU if the sum sum_i C_i/min{D_i,P_i} of the densities of the tasks running on such a CPU is smaller or equal than 1 (notice that this condition is only sufficient, and not necessary). -- 1.9.0