From 9c6e5a362adab32f36133e83a4e69e0c6c4a26d0 Mon Sep 17 00:00:00 2001
From: Con Kolivas <kernel@kolivas.org>
Date: Thu, 26 Jul 2007 13:40:43 +0200
Subject: [PATCH] --- yaml --- r: 63014 b: refs/heads/master c:
 d02c7a8cf208eb80a3ccbff40a6bebe8902af35a h: refs/heads/master v: v3

---
 [refs]                      |  2 +-
 trunk/include/linux/sched.h | 16 ++++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index ab025eacf27c..08a1a1369a13 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b762f3ffb797c1281a38a1c82194534055fba5ec
+refs/heads/master: d02c7a8cf208eb80a3ccbff40a6bebe8902af35a
diff --git a/trunk/include/linux/sched.h b/trunk/include/linux/sched.h
index 7a4de8768748..2e490271acf6 100644
--- a/trunk/include/linux/sched.h
+++ b/trunk/include/linux/sched.h
@@ -786,6 +786,22 @@ extern int partition_sched_domains(cpumask_t *partition1,
 
 #endif	/* CONFIG_SMP */
 
+/*
+ * A runqueue laden with a single nice 0 task scores a weighted_cpuload of
+ * SCHED_LOAD_SCALE. This function returns 1 if any cpu is laden with a
+ * task of nice 0 or enough lower priority tasks to bring up the
+ * weighted_cpuload
+ */
+static inline int above_background_load(void)
+{
+	unsigned long cpu;
+
+	for_each_online_cpu(cpu) {
+		if (weighted_cpuload(cpu) >= SCHED_LOAD_SCALE)
+			return 1;
+	}
+	return 0;
+}
 
 struct io_context;			/* See blkdev.h */
 struct cpuset;