Re: [PATCH 1/2] hung_task: Reset warning budget when problem gets resolved

[Lance Yang <lance.yang@linux.dev>]

On 2026/8/4 08:15, Aaron Tomlin wrote:
> From: Petr Mladek <pmladek@suse.com>
> 
> sysctl_hung_task_warnings counts how many hung tasks are reported.
> The watchdog does not report anything once the limit is reached.
> Currently, this budget is decremented permanently, meaning the kernel is
> left blind to subsequent hung tasks even after the original issue resolves.
> 
> Keep the global sysctl_hung_task_warnings intact, and instead decrement
> a copy (hung_task_warnings_printed) when warnings are printed. Reset
> the copy back to the configured sysctl_hung_task_warnings limit once the
> problem on the system gets resolved and check_hung_uninterruptible_tasks()
> detects no hung tasks in a check interval.
> 
> Also keep the copy updated when the global sysctl_hung_task_warnings
> value is updated via sysctl, and update documentation to reflect
> the new behavior.
> 
> Assisted-by: gemini-3.5-flash
> Signed-off-by: Petr Mladek <pmladek@suse.com>

Was a bit surprised not to see any tag from you here. I’d assumed you’d
be taking this through testing and spinning v7, so I expected your SoB +
Suggested-by Petr.

Keeping both SoBs works too; either way, you’ve definitely earned yours
here.

Assisted-by: gemini-3.5-flash
Suggested-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Aaron Tomlin <atomlin@atomlin.com>

Same goes for patch #02, btw :)

Thanks, Lance