From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932475AbaESNOp (ORCPT ); Mon, 19 May 2014 09:14:45 -0400 Received: from terminus.zytor.com ([198.137.202.10]:59462 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754669AbaESNLH (ORCPT ); Mon, 19 May 2014 09:11:07 -0400 Date: Mon, 19 May 2014 06:10:14 -0700 From: tip-bot for Dongsheng Yang Message-ID: Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@kernel.org, peterz@infradead.org, tglx@linutronix.de, yangds.fnst@cn.fujitsu.com Reply-To: mingo@kernel.org, hpa@zytor.com, linux-kernel@vger.kernel.org, peterz@infradead.org, tglx@linutronix.de, yangds.fnst@cn.fujitsu.com In-Reply-To: References: To: linux-tip-commits@vger.kernel.org Subject: [tip:sched/core] sched/prio: Add two inline function named nice_to_rlimit() and rlimit_to_nice() in prio.h. Git-Commit-ID: b482e5f5c22ef95ffe7c4d86fc9719455fb24bca X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: b482e5f5c22ef95ffe7c4d86fc9719455fb24bca Gitweb: http://git.kernel.org/tip/b482e5f5c22ef95ffe7c4d86fc9719455fb24bca Author: Dongsheng Yang AuthorDate: Thu, 8 May 2014 18:33:48 +0900 Committer: Thomas Gleixner CommitDate: Mon, 19 May 2014 22:02:42 +0900 sched/prio: Add two inline function named nice_to_rlimit() and rlimit_to_nice() in prio.h. This patch add two inline functions named nice_to_rlimit() and rlimit_to_nice() in prio.h. They are handle the convertion between nice value [19,-20] and rlimit style value [1,40]. Cc: mingo@redhat.com Signed-off-by: Dongsheng Yang Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/e1f9c9f2023719e0738e16cd6807c74c68b08fad.1399532322.git.yangds.fnst@cn.fujitsu.com Signed-off-by: Thomas Gleixner --- include/linux/sched/prio.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/include/linux/sched/prio.h b/include/linux/sched/prio.h index ac32258..d9cf5a5 100644 --- a/include/linux/sched/prio.h +++ b/include/linux/sched/prio.h @@ -41,4 +41,20 @@ #define TASK_USER_PRIO(p) USER_PRIO((p)->static_prio) #define MAX_USER_PRIO (USER_PRIO(MAX_PRIO)) +/* + * Convert nice value [19,-20] to rlimit style value [1,40]. + */ +static inline long nice_to_rlimit(long nice) +{ + return (MAX_NICE - nice + 1); +} + +/* + * Convert rlimit style value [1,40] to nice value [-20, 19]. + */ +static inline long rlimit_to_nice(long prio) +{ + return (MAX_NICE - prio + 1); +} + #endif /* _SCHED_PRIO_H */