diff options
| author | Rik van Riel <riel@redhat.com> | 2014-06-23 11:46:15 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-07-05 11:17:37 +0200 |
| commit | 1c5d3eb3759013bc7ee4197aa0a9f245bdb6eb90 (patch) | |
| tree | 40e613c451a1a8420fb744c184aebd42da419ed5 /kernel/sched/fair.c | |
| parent | 6dc1a672ab15604947361dcd02e459effa09bad5 (diff) | |
sched/numa: Simplify task_numa_compare()
When a task is part of a numa_group, the comparison should always use
the group weight, in order to make workloads converge.
Signed-off-by: Rik van Riel <riel@redhat.com>
Cc: chegu_vinod@hp.com
Cc: mgorman@suse.de
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1403538378-31571-4-git-send-email-riel@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/fair.c')
| -rw-r--r-- | kernel/sched/fair.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index d6526d2cf173..cebb312e874b 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -1154,7 +1154,7 @@ static void task_numa_compare(struct task_numa_env *env, struct task_group *tg; long src_load, dst_load; long load; - long imp = (groupimp > 0) ? groupimp : taskimp; + long imp = env->p->numa_group ? groupimp : taskimp; rcu_read_lock(); cur = ACCESS_ONCE(dst_rq->curr); @@ -1192,11 +1192,6 @@ static void task_numa_compare(struct task_numa_env *env, * itself (not part of a group), use the task weight * instead. */ - if (env->p->numa_group) - imp = groupimp; - else - imp = taskimp; - if (cur->numa_group) imp += group_weight(cur, env->src_nid) - group_weight(cur, env->dst_nid); |