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SubjectRe: [patch 12/19] softirq: Add RT specific softirq accounting
On Fri, Nov 13, 2020 at 03:02:19PM +0100, Thomas Gleixner wrote:
> RT requires the softirq to be preemptible and uses a per CPU local lock to
> protect BH disabled sections and softirq processing. Therefore RT cannot
> use the preempt counter to keep track of BH disabled/serving.
>
> Add a RT only counter to task struct and adjust the relevant macros in
> preempt.h.

You may want to describe a bit the reason for this per task counter.
It's not intuitive at this stage.

Thanks.

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