lkml.org 
[lkml]   [2014]   [May]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 1/2] sched/prio: Add two inline function named nice_to_rlimit() and rlimit_to_nice() in prio.h.
Date
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].

Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
---
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 */
--
1.8.2.1


\
 
 \ /
  Last update: 2014-05-08 13:21    [W:0.071 / U:3.624 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site