[2.6.16-rc6 patch] remove sleep_avg multiplier

[Mike Galbraith <efault@gmx.de>]

Greetings,

The patchlet below removes the sleep_avg multiplier.  This multiplier
was necessary back when we had 10 seconds of dynamic range in sleep_avg,
but now that we only have one second, it causes that one second to be
compressed down to 100ms in some cases.  This is particularly noticeable
when compiling a kernel in a slow NFS mount, and I believe it to be a
very likely candidate for other recently reported network related
interactivity problems.

In testing, I can detect no negative impact of this removal.  IMHO, this
constitutes a bug-fix, and as such is suitable for 2.6.16.

	-Mike

Signed-off-by: Mike Galbraith <efault@gmx.de>

--- linux-2.6.16rc6/kernel/sched.c.org	2006-03-14 10:30:35.000000000 +0100
+++ linux-2.6.16rc6/kernel/sched.c	2006-03-14 10:31:13.000000000 +0100
@@ -707,12 +707,6 @@
 						DEF_TIMESLICE);
 		} else {
 			/*
-			 * The lower the sleep avg a task has the more
-			 * rapidly it will rise with sleep time.
-			 */
-			sleep_time *= (MAX_BONUS - CURRENT_BONUS(p)) ? : 1;
-
-			/*
 			 * Tasks waking from uninterruptible sleep are
 			 * limited in their sleep_avg rise as they
 			 * are likely to be waiting on I/O