From d425b274ba83ba4e7746a40446ec0ba3267de51f Mon Sep 17 00:00:00 2001
From: Con Kolivas
Date: Fri, 31 Mar 2006 02:31:29 -0800
Subject: [PATCH] sched: activate SCHED BATCH expired

To increase the strength of SCHED_BATCH as a scheduling hint we can
activate batch tasks on the expired array since by definition they are
latency insensitive tasks.

Signed-off-by: Con Kolivas <kernel@kolivas.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 include/linux/sched.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'include/linux')

diff --git a/include/linux/sched.h b/include/linux/sched.h
index c4fd3fcd3feb..78c40dd2e19a 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -484,6 +484,7 @@ struct signal_struct {
 #define MAX_PRIO		(MAX_RT_PRIO + 40)
 
 #define rt_task(p)		(unlikely((p)->prio < MAX_RT_PRIO))
+#define batch_task(p)		(unlikely((p)->policy == SCHED_BATCH))
 
 /*
  * Some day this will be a full-fledged user tracking system..
-- 
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