commit 57a6f51c4281aa3119975473c70dce0480d322bd
author Oleg Nesterov <oleg@tv-sign.ru> Fri Sep 29 02:00:49 2006 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> Fri Sep 29 09:18:17 2006 -0700
tree 05d22c0c64fc9de38554b6aca24b021a81479975
parent 5fe1d75f34974046fffcca5e22fb8a7b42fded33

[PATCH] introduce is_rt_policy() helper

Imho, makes the code a bit easier to read.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

kernel/sched.c

diff --git a/kernel/sched.c b/kernel/sched.c
index f9b3c6a..c3c718a 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -4109,8 +4109,7 @@
 	    (p->mm && param->sched_priority > MAX_USER_RT_PRIO-1) ||
 	    (!p->mm && param->sched_priority > MAX_RT_PRIO-1))
 		return -EINVAL;
-	if ((policy == SCHED_NORMAL || policy == SCHED_BATCH)
-					!= (param->sched_priority == 0))
+	if (is_rt_policy(policy) != (param->sched_priority != 0))
 		return -EINVAL;
 
 	/*
@@ -4134,7 +4133,7 @@
 				!rlim_rtprio)
 			return -EPERM;
 		/* can't increase priority */
-		if ((policy != SCHED_NORMAL && policy != SCHED_BATCH) &&
+		if (is_rt_policy(policy) &&
 		    param->sched_priority > p->rt_priority &&
 		    param->sched_priority > rlim_rtprio)
 			return -EPERM;