sched/numa: Don't scale the imbalance

It's far too easy to get ridiculously large imbalance pct when you scale it like that. Use a fixed 125% for now. Signed-off-by: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
klaby · May 14, 2012 · 870a0bb · 870a0bb
1 parent 04f733b
commit 870a0bb
Showing 1 changed file with 1 addition and 6 deletions.
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
@@ -6261,11 +6261,6 @@ static int *sched_domains_numa_distance;
 static struct cpumask ***sched_domains_numa_masks;
 static int sched_domains_curr_level;
 
-static inline unsigned long numa_scale(unsigned long x, int level)
-{
-	return x * sched_domains_numa_distance[level] / sched_domains_numa_scale;
-}
-
 static inline int sd_local_flags(int level)
 {
 	if (sched_domains_numa_distance[level] > REMOTE_DISTANCE)
@@ -6286,7 +6281,7 @@ sd_numa_init(struct sched_domain_topology_level *tl, int cpu)
 		.min_interval		= sd_weight,
 		.max_interval		= 2*sd_weight,
 		.busy_factor		= 32,
-		.imbalance_pct		= 100 + numa_scale(25, level),
+		.imbalance_pct		= 125,
 		.cache_nice_tries	= 2,
 		.busy_idx		= 3,
 		.idle_idx		= 2,