Re: [PATCH v3 1/2] hung_task: Show the blocker task if the task is hung on mutex

[Waiman Long]

On 2/24/25 9:51 AM, Steven Rostedt wrote:
> On Sun, 23 Feb 2025 14:53:28 -0500
> Waiman Long <llong@xxxxxxxxxx> wrote:
>
> > > >    +
> > > > +#ifdef CONFIG_DETECT_HUNG_TASK_BLOCKER
> > > > +static void debug_show_blocker(struct task_struct *task)
> > I think the easiest way forward is to change it to "#if
> > defined(CONFIG_DETECT_HUNG_TASK_BLOCKER) && !defined(CONFIG_PREEMPT_RT)"
> > to skip this feature for PREEMPT_RT right now . Otherwise, you will have
> > to deal with the rtmutex code.
> If this isn't supported by PREEMPT_RT (yet), then just make the
> DETECT_HUNG_TASK_BLOCKER in the Kconfig be:
>
> 	Depends on !PREEMPT_RT
>
> Don't put that dependency in the code.

Yes, that will work too.

Cheers,
Longman