Architectures that want to support this need to do a couple of
code-organizational changes first:
-- move their irq-flags manipulation code from their asm/system.h header
- to asm/irqflags.h
-
-- rename local_irq_disable()/etc to raw_local_irq_disable()/etc. so that
- the linux/irqflags.h code can inject callbacks and can construct the
- real local_irq_disable()/etc APIs.
-
- add and enable TRACE_IRQFLAGS_SUPPORT in their arch level Kconfig file
and then a couple of functional changes are needed as well to implement