Re: [PATCH v6] softirq: Preserve interrupt context during IRQ exit

[Karl Mehltretter]

On Wed, Oct 14, 2026 at 12:05:24PM +0100, Steven Rostedt wrote:
> LGTM.
> 
> So this handles the transition between hard irq and softirq?
> 
> I wish there was a way to get preempt count updated earlier on entering a
> hard irq so I can get rid of the transition bit in the trace recursion. As
> there's still places that can trigger a trace in the hard irq before
> preempt count is updated.
> 

Yes, this handles the hardirq-to-softirq transition on IRQ exit.

I am looking into whether the preempt count can be updated before any
traceable code can run, as a potential follow-up RFC.

If that works, it may allow the transition bit to be removed from trace
recursion.

Thanks,
Karl