[PATCH] sched - remove unnecessary smpnice ifdefs

[Con Kolivas <kernel@kolivas.org>]

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On Sunday 15 January 2006 11:05, Peter Williams wrote:
> Martin J. Bligh wrote:
> >> Attached is a new patch to fix the excessive idle problem.  This patch
> >> takes a new approach to the problem as it was becoming obvious that
> >> trying to alter the load balancing code to cope with biased load was
> >> harder than it seemed.
> >>
> >> This approach reverts to the old load values but weights them
> >> according to tasks' bias_prio values.  This means that any assumptions
> >> by the load balancing code that the load generated by a single task is
> >> SCHED_LOAD_SCALE will still hold.  Then, in find_busiest_group(), the
> >> imbalance is scaled back up to bias_prio scale so that move_tasks()
> >> can move biased load rather than tasks.
> >
> > OK, this one seems to fix the issue that I had, AFAICS. Congrats, and
> > thanks,
>
> Terrific, thanks for testing.
>
> Con,
> 	Attached is a cleaned up version of this patch against 2.6.15-mm4 with
> some (hopefully helpful) comments added.

One minor quibble.

Cheers,
Con

---
These #defines have no cost on !CONFIG_SMP without the ifdefs.
Remove the unnecessary ifdefs.

Signed-off-by: Con Kolivas <kernel@kolivas.org>

 kernel/sched.c |    2 --
 1 files changed, 2 deletions(-)

Index: linux-2.6.15-mm4/kernel/sched.c
===================================================================
--- linux-2.6.15-mm4.orig/kernel/sched.c
+++ linux-2.6.15-mm4/kernel/sched.c
@@ -63,7 +63,6 @@
 #define PRIO_TO_NICE(prio)	((prio) - MAX_RT_PRIO - 20)
 #define TASK_NICE(p)		PRIO_TO_NICE((p)->static_prio)
 
-#ifdef CONFIG_SMP
 /*
  * Priority bias for load balancing ranges from 1 (nice==19) to 139 (RT
  * priority of 100).
@@ -71,7 +70,6 @@
 #define NICE_TO_BIAS_PRIO(nice)	(20 - (nice))
 #define PRIO_TO_BIAS_PRIO(prio)	NICE_TO_BIAS_PRIO(PRIO_TO_NICE(prio))
 #define RTPRIO_TO_BIAS_PRIO(rp)	(40 + (rp))
-#endif
 
 /*
  * 'User priority' is the nice value converted to something we

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