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Date:   Mon, 7 Sep 2020 13:46:18 +0200
From:   peterz@infradead.org
To:     Joerg Vehlow <lkml@jv-coder.de>
Cc:     Steven Rostedt <rostedt@goodmis.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
        Huang Ying <ying.huang@intel.com>,
        linux-kernel@vger.kernel.org,
        Joerg Vehlow <joerg.vehlow@aox-tech.de>
Subject: Re: [BUG RT] dump-capture kernel not executed for panic in interrupt
 context
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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?