From: Nick Piggin <nickpiggin@yahoo.com.au>
Remove the special casing for idle CPU balancing. Things like this are
hurting for example on SMT, where are single sibling being idle doesn't really
warrant a really aggressive pull over the NUMA domain, for example.
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
25-akpm/kernel/sched.c | 6 ------
1 files changed, 6 deletions(-)
diff -puN kernel/sched.c~sched2-less-aggressive-idle-balancing kernel/sched.c
--- 25/kernel/sched.c~sched2-less-aggressive-idle-balancing 2005-03-17 23:47:59.000000000 -0800
+++ 25-akpm/kernel/sched.c 2005-03-17 23:47:59.000000000 -0800
@@ -1878,15 +1878,9 @@ nextgroup:
/* Get rid of the scaling factor, rounding down as we divide */
*imbalance = *imbalance / SCHED_LOAD_SCALE;
-
return busiest;
out_balanced:
- if (busiest && (idle == NEWLY_IDLE ||
- (idle == SCHED_IDLE && max_load > SCHED_LOAD_SCALE)) ) {
- *imbalance = 1;
- return busiest;
- }
*imbalance = 0;
return NULL;
_