RT runs softirq processing always in thread context and it requires that both the softirq execution and the BH disabled sections are preemptible.
This is achieved by serialization through per CPU local locks and substituting a few parts of the existing softirq processing code with helper functions. The series applies on top of git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git tasklet-2021-03-09 and is completely available from: git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git softirq Changes to V2 which can be found here: https://lore.kernel.org/r/20201204170151.960336...@linutronix.de - Split the tasklet changes out (seperate submission) - Rebase it on the tasklet series (no further changes) Thanks, tglx
