tests: kernel: smp_abort: add delay to ensure circular dependency
The test_smp_thread_abort_deadlock test assumes all CPUs will
simultaneously establish a circular abort dependency (each thread
aborts the next in a ring). However, on platforms with large
emulator/simulator quantum sizes, one thread's ISR may complete
and return before another thread even calls k_thread_abort() on it,
preventing the circular dependency from forming.
This manifested on ARMv8-R FVP but not on QEMU or ARMv8-A/ARMv9-A FVP
due to different timing characteristics and quantum sizes.
Add a k_busy_wait(100) after k_thread_abort() to give all CPUs time
to call abort before any ISR completes.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
1 file changed
