Problem:
In the patch
sched-avoid-unnecessarily-moving-highest-priority-task-move_tasks.patch
I got a the sense of a boolean expression wrong when assigning a value
to skip_for_load. The expression should have been negated before being
assigned.
Solution:
Negate the expression and apply de Marcos rule to simplify it. This
patch is on top of
sched-avoid-unnecessarily-moving-highest-priority-task-move_tasks.patch
Signed-off-by: Peter Williams <[email protected]>
--
Peter Williams [email protected]
"Learning, n. The kind of ignorance distinguishing the studious."
-- Ambrose Bierce
Index: MM-2.6.17-rc1-mm3/kernel/sched.c
===================================================================
--- MM-2.6.17-rc1-mm3.orig/kernel/sched.c 2006-04-21 12:26:54.000000000 +1000
+++ MM-2.6.17-rc1-mm3/kernel/sched.c 2006-04-25 09:09:54.000000000 +1000
@@ -2108,7 +2108,7 @@ skip_queue:
*/
skip_for_load = tmp->load_weight > rem_load_move;
if (skip_for_load && idx < this_best_prio)
- skip_for_load = busiest_best_prio_seen || idx != busiest_best_prio;
+ skip_for_load = !busiest_best_prio_seen && idx == busiest_best_prio;
if (skip_for_load ||
!can_migrate_task(tmp, busiest, this_cpu, sd, idle, &pinned)) {
if (curr != head)
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