Re: [BUG RT] dump-capture kernel not executed for panic in interrupt context

From: peterz
Date: Mon Sep 07 2020 - 07:49:05 EST


On Mon, Sep 07, 2020 at 12:51:37PM +0200, Joerg Vehlow wrote:
> Hi,
>
> I guess there is currently no other way than to use something like Steven
> proposed. I implemented and tested the attached patch with a module,
> that triggers the soft lockup detection and it works as expected.
> I did not use inline functions, but normal function implemented in
> kexec_core,
> because there is nothing time critical here.
> I also added the mutex_lock to the trylock variant, because then the unlock
> function can be the same for both lock functions.
>
> What do you think?

I think it's too complicated for that is needed, did you see my
suggestion from a year ago? Did i miss something obvious?