> > It'd be nice to have inside local_irq_disable()/enable() a cycle counter
> > sampler to see what is the worst case path with disabled irqs.
> >
>
> http://www.zip.com.au/~akpm/linux/#intlat
>
> This tool needs a bit of maintenance work, but it can measure and identify
> the source of worst-case interrupt latencies quite successfully.
Thx, i'll take a look.
- Davide
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