[v2,0/3] Lazy preemption leftovers

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Sebastian Andrzej Siewior Oct. 21, 2024, 3:08 p.m. UTC

This is a followup to PeterZ'
	https://lore.kernel.org/[e-mail]

in PREEMPT_RT we had initially "LAZY preempt" this then morphed into
PREEMPT_AUTO and is becoming "Lazy preemption".
These are the tracing bits from that time that were used up to
PREEMPT_AUTO. With RT's RiscV support, they also contributed
PREEMPT_AUTO support which I just updated to current edition.

I used to have ARM* and POWERPC*, too support for the "LAZY preempt" but
this relied on assembly support and I dropped this during the switch to
PREEMPT_AUTO.

v1…v2 https://lore.kernel.org/all/[e-mail] :
  - Added IS_ENABLED(CONFIG_ARCH_HAS_PREEMPT_LAZY) to
    tracing_gen_ctx_irq_test() to only record lazy flags if the
    architecture supports it (Ankur Arora).

  - Added a bit of Documentation for the additional context status
    (Shrikanth Hegde)

Sebastian