Messages in this thread | | | Date | Tue, 21 Mar 2023 11:02:06 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH v2] sched/fair: sanitize vruntime of entity being migrated |
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On Fri, Mar 17, 2023 at 05:08:10PM +0100, Vincent Guittot wrote: > Commit 829c1651e9c4 ("sched/fair: sanitize vruntime of entity being placed") > fixes an overflowing bug, but ignore a case that se->exec_start is reset > after a migration. > > For fixing this case, we delay the reset of se->exec_start after > placing the entity which se->exec_start to detect long sleeping task. > > In order to take into account a possible divergence between the clock_task > of 2 rqs, we increase the threshold to around 104 days. > > > Fixes: 829c1651e9c4 ("sched/fair: sanitize vruntime of entity being placed") > Signed-off-by: Zhang Qiao <zhangqiao22@huawei.com> > Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> > ---
Blergh, this just isn't going to be nice. I'll go queue this for sched/urgent and then we can forget about this for a little while.
Thanks!
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