Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752427AbaBJJGj (ORCPT ); Mon, 10 Feb 2014 04:06:39 -0500 Received: from cn.fujitsu.com ([222.73.24.84]:5596 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751654AbaBJJGH (ORCPT ); Mon, 10 Feb 2014 04:06:07 -0500 X-IronPort-AV: E=Sophos;i="4.95,816,1384272000"; d="scan'208";a="9497596" From: Dongsheng Yang To: linux-kernel@vger.kernel.org Cc: raistlin@linux.it, juri.lelli@gmail.com, clark.williams@gmail.com, peterz@infradead.org, mingo@redhat.com, namhyung@kernel.org, Dongsheng Yang Subject: [PATCH 2/3] sched: Expose some macros related with priority. Date: Mon, 10 Feb 2014 17:05:45 +0800 Message-Id: X-Mailer: git-send-email 1.8.2.1 In-Reply-To: References: X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2014/02/10 17:03:54, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2014/02/10 17:04:03, Serialize complete at 2014/02/10 17:04:03 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some macros in kernel/sched/sched.h about priority are private to kernel/sched. But they are useful to other parts of the core kernel. This patch move these macros from kernel/sched/sched.h to include/linux/sched/prio.h so that they are available to other subsystems. Signed-off-by: Dongsheng Yang --- include/linux/sched/prio.h | 18 ++++++++++++++++++ kernel/sched/sched.h | 18 ------------------ 2 files changed, 18 insertions(+), 18 deletions(-) diff --git a/include/linux/sched/prio.h b/include/linux/sched/prio.h index 9382ba8..13216f1 100644 --- a/include/linux/sched/prio.h +++ b/include/linux/sched/prio.h @@ -20,4 +20,22 @@ #define MAX_PRIO (MAX_RT_PRIO + 40) #define DEFAULT_PRIO (MAX_RT_PRIO + 20) +/* + * Convert user-nice values [ -20 ... 0 ... 19 ] + * to static priority [ MAX_RT_PRIO..MAX_PRIO-1 ], + * and back. + */ +#define NICE_TO_PRIO(nice) (MAX_RT_PRIO + (nice) + 20) +#define PRIO_TO_NICE(prio) ((prio) - MAX_RT_PRIO - 20) +#define TASK_NICE(p) PRIO_TO_NICE((p)->static_prio) + +/* + * 'User priority' is the nice value converted to something we + * can work with better when scaling various scheduler parameters, + * it's a [ 0 ... 39 ] range. + */ +#define USER_PRIO(p) ((p)-MAX_RT_PRIO) +#define TASK_USER_PRIO(p) USER_PRIO((p)->static_prio) +#define MAX_USER_PRIO (USER_PRIO(MAX_PRIO)) + #endif /* _SCHED_PRIO_H */ diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index c2119fd..b44720d 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -24,24 +24,6 @@ extern long calc_load_fold_active(struct rq *this_rq); extern void update_cpu_load_active(struct rq *this_rq); /* - * Convert user-nice values [ -20 ... 0 ... 19 ] - * to static priority [ MAX_RT_PRIO..MAX_PRIO-1 ], - * and back. - */ -#define NICE_TO_PRIO(nice) (MAX_RT_PRIO + (nice) + 20) -#define PRIO_TO_NICE(prio) ((prio) - MAX_RT_PRIO - 20) -#define TASK_NICE(p) PRIO_TO_NICE((p)->static_prio) - -/* - * 'User priority' is the nice value converted to something we - * can work with better when scaling various scheduler parameters, - * it's a [ 0 ... 39 ] range. - */ -#define USER_PRIO(p) ((p)-MAX_RT_PRIO) -#define TASK_USER_PRIO(p) USER_PRIO((p)->static_prio) -#define MAX_USER_PRIO (USER_PRIO(MAX_PRIO)) - -/* * Helpers for converting nanosecond timing to jiffy resolution */ #define NS_TO_JIFFIES(TIME) ((unsigned long)(TIME) / (NSEC_PER_SEC / HZ)) -- 1.8.2.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/