Re: [PATCH v2 2/4] hung_task: Add hung_task_sys_info sysctl to dump sys info on task-hung

[Petr Mladek]

On Thu 2025-11-13 19:10:37, Feng Tang wrote:
> When task-hung happens, developers may need different kinds of system
> information (call-stacks, memory info, locks, etc.) to help debugging.
> 
> Add 'hung_task_sys_info' sysctl knob to take human readable string like
> "tasks,mem,timers,locks,ftrace,...", and when task-hung happens, all
> requested information will be dumped. (refer kernel/sys_info.c for more
> details).
> 
> Meanwhile, the newly introduced sys_info() call is used to unify some
> existing info-dumping knobs.
> 
> Suggested-by: Petr Mladek <pmladek@xxxxxxxx>
> Signed-off-by: Feng Tang <feng.tang@xxxxxxxxxxxxxxxxx>

It would have been better to split the refactoring (moving some logic
from check_hung_task()) into a separate patch.

But the result looks good. Feel free to use:

Reviewed-by: Petr Mladek <pmladek@xxxxxxxx>

Best Regards,
Petr