On Wed, 8 Nov 2017 20:57:42 +0900 Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> wrote: > Lingutla Chandrasekhar wrote: > > Some tasks may intentionally moves to uninterruptable sleep state, > > which shouldn't leads to khungtask panics, as those are recoverable > > hungs. So to avoid false hung reports, add an option to select tasks > > to be monitored and report/panic them only. > > What are backtraces of such tasks? Please point the locations in the code. > > If they are absolutely recoverable, why can't we let themselves declare that > "I'm intentionally in uninterruptible state. But there is no dependency that > prevents me from recovering. So, please ignore me." using per "struct > task_struct" flags rather than introducing userspace controlled interface? Yes. Please tell us much much much more about the use case and scenarios which inspired this change.
