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| author | Vincent Guittot <vincent.guittot@linaro.org> | 2023-03-17 17:08:10 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-03-21 14:43:04 +0100 |
| commit | a53ce18cacb477dd0513c607f187d16f0fa96f71 (patch) | |
| tree | cbd0e5bf188e6a8f8a78d8159926149874b80b33 /net/qrtr | |
| parent | e8d018dd0257f744ca50a729e3d042cf2ec9da65 (diff) | |
sched/fair: Sanitize vruntime of entity being migrated
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")
Originally-by: Zhang Qiao <zhangqiao22@huawei.com>
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Zhang Qiao <zhangqiao22@huawei.com>
Link: https://lore.kernel.org/r/20230317160810.107988-1-vincent.guittot@linaro.org
Diffstat (limited to 'net/qrtr')
0 files changed, 0 insertions, 0 deletions