[tip:sched/core] sched: Remove all open implementation of nice_to_rlimit()/rlimit_to_nice().

[tip-bot for Dongsheng Yang <tipbot@zytor.com>]

Commit-ID:  f6156cfc0d785f8ef195d6c2f538113e041b6d44
Gitweb:     http://git.kernel.org/tip/f6156cfc0d785f8ef195d6c2f538113e041b6d44
Author:     Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
AuthorDate: Thu, 8 May 2014 18:33:49 +0900
Committer:  Thomas Gleixner <tglx@linutronix.de>
CommitDate: Mon, 19 May 2014 22:02:42 +0900

sched: Remove all open implementation of nice_to_rlimit()/rlimit_to_nice().

As there are already two inline functions in prio.h to handle the convertiion
between nice value and rlimit style value of priority, this patch remove all
open implementation of these two functions.

Cc: mingo@redhat.com
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: Thomas Gleixner <tglx@linutronix.de>
---
 drivers/staging/android/binder.c | 2 +-
 kernel/sched/core.c              | 2 +-
 kernel/sys.c                     | 6 +++---
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/android/binder.c b/drivers/staging/android/binder.c
index 179b21b..9311bb6 100644
--- a/drivers/staging/android/binder.c
+++ b/drivers/staging/android/binder.c
@@ -436,7 +436,7 @@ static void binder_set_nice(long nice)
 		set_user_nice(current, nice);
 		return;
 	}
-	min_nice = 20 - current->signal->rlim[RLIMIT_NICE].rlim_cur;
+	min_nice = rlimit_to_nice(current->signal->rlim[RLIMIT_NICE].rlim_cur);
 	binder_debug(BINDER_DEBUG_PRIORITY_CAP,
 		     "%d: nice value %ld not allowed use %ld instead\n",
 		      current->pid, nice, min_nice);
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index c134eb0..084832c 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -3033,7 +3033,7 @@ EXPORT_SYMBOL(set_user_nice);
 int can_nice(const struct task_struct *p, const int nice)
 {
 	/* convert nice value [19,-20] to rlimit style value [1,40] */
-	int nice_rlim = 20 - nice;
+	int nice_rlim = nice_to_rlimit(nice);
 
 	return (nice_rlim <= task_rlimit(p, RLIMIT_NICE) ||
 		capable(CAP_SYS_NICE));
diff --git a/kernel/sys.c b/kernel/sys.c
index fba0f29..66a751e 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -250,7 +250,7 @@ SYSCALL_DEFINE2(getpriority, int, which, int, who)
 			else
 				p = current;
 			if (p) {
-				niceval = 20 - task_nice(p);
+				niceval = nice_to_rlimit(task_nice(p));
 				if (niceval > retval)
 					retval = niceval;
 			}
@@ -261,7 +261,7 @@ SYSCALL_DEFINE2(getpriority, int, which, int, who)
 			else
 				pgrp = task_pgrp(current);
 			do_each_pid_thread(pgrp, PIDTYPE_PGID, p) {
-				niceval = 20 - task_nice(p);
+				niceval = nice_to_rlimit(task_nice(p));
 				if (niceval > retval)
 					retval = niceval;
 			} while_each_pid_thread(pgrp, PIDTYPE_PGID, p);
@@ -277,7 +277,7 @@ SYSCALL_DEFINE2(getpriority, int, which, int, who)
 
 			do_each_thread(g, p) {
 				if (uid_eq(task_uid(p), uid)) {
-					niceval = 20 - task_nice(p);
+					niceval = nice_to_rlimit(task_nice(p));
 					if (niceval > retval)
 						retval = niceval;
 				}