Re: [patch] Real-Time Preemption, -RT-2.6.13-rc4-V0.7.52-01

Daniel Walker
2005-08-01T21:26:09Z

On Mon, 2005-08-01 at 14:22 -0400, Steven Rostedt wrote:
> Ingo,
>
> What's with the "BUG: possible soft lockup detected on CPU..."? I'm
> getting a bunch of them from the IDE interrupt. It's not locking up,
> but it does things that probably do take some time. Is this really
> necessary? Here's an example dump:
>
> -- Steve
>
> Note: I added the curr=%s:%d,current->comm,current->pid just to see who
> was at fault.

It means that IRQ 14 is running for a long time as an RT task .. btw,
the curr=%s:%d information duplicates some in the "show all held locks"
section .

I could base it off current_sched_time() to only trigger if the task has
actually been running for 10 seconds, instead of just assuming that it
has..

Daniel