diff options
| author | Dongsheng Yang <yangds.fnst@cn.fujitsu.com> | 2014-05-08 18:33:49 +0900 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-05-22 11:16:36 +0200 |
| commit | 7aa2c016db2162defff77f6f5731bff3f25e5175 (patch) | |
| tree | af4d613e911eec6db4ccffeb1d100f718a9de9c5 /include/linux/sched | |
| parent | a803f0261bb2bb57aab5542af3174db43b2a3887 (diff) | |
| download | linux-next-7aa2c016db2162defff77f6f5731bff3f25e5175.tar.gz | |
sched: Consolidate open coded implementations of nice level frobbing into nice_to_rlimit() and rlimit_to_nice()
Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/a568a1e3cc8e78648f41b5035fa5e381d36274da.1399532322.git.yangds.fnst@cn.fujitsu.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/sched')
| -rw-r--r-- | include/linux/sched/prio.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/sched/prio.h b/include/linux/sched/prio.h index ac322583c820..d9cf5a5762d9 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 */ |