diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2008-02-29 15:21:01 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-03-07 16:42:59 +0100 |
| commit | 810b38179e9e4d4f57b4b733767bb08f8291a965 (patch) | |
| tree | 91692de4fbd46879b29d803839b5bf7e25f30cd8 /kernel/sched.c | |
| parent | ce4796d1e16cf3761dc2a02b8d588667d05b3078 (diff) | |
| download | lwn-810b38179e9e4d4f57b4b733767bb08f8291a965.tar.gz lwn-810b38179e9e4d4f57b4b733767bb08f8291a965.zip | |
sched: retain vruntime
Kei Tokunaga reported an interactivity problem when moving tasks
between control groups.
Tasks would retain their old vruntime when moved between groups, this
can cause funny lags. Re-set the vruntime on group move to fit within
the new tree.
Reported-by: Kei Tokunaga <tokunaga.keiich@jp.fujitsu.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index dcd553cc4ee8..0b949c4e73ad 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -7625,6 +7625,11 @@ void sched_move_task(struct task_struct *tsk) set_task_rq(tsk, task_cpu(tsk)); +#ifdef CONFIG_FAIR_GROUP_SCHED + if (tsk->sched_class->moved_group) + tsk->sched_class->moved_group(tsk); +#endif + if (on_rq) { if (unlikely(running)) tsk->sched_class->set_curr_task(rq); |