Commit-ID: b482e5f5c22ef95ffe7c4d86fc9719455fb24bca Gitweb: http://git.kernel.org/tip/b482e5f5c22ef95ffe7c4d86fc9719455fb24bca Author: Dongsheng Yang <yangds.f...@cn.fujitsu.com> AuthorDate: Thu, 8 May 2014 18:33:48 +0900 Committer: Thomas Gleixner <t...@linutronix.de> 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: mi...@redhat.com Signed-off-by: Dongsheng Yang <yangds.f...@cn.fujitsu.com> Signed-off-by: Peter Zijlstra <pet...@infradead.org> Link: http://lkml.kernel.org/r/e1f9c9f2023719e0738e16cd6807c74c68b08fad.1399532322.git.yangds.f...@cn.fujitsu.com Signed-off-by: Thomas Gleixner <t...@linutronix.de> --- 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 */ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
