On Wed, 2 Nov 2022 18:29:41 +
Valentin Schneider wrote:
> This is incomplete, just looking at arm64 there's more IPI types that aren't
> covered:
>
> IPI_CPU_STOP,
> IPI_CPU_CRASH_STOP,
> IPI_TIMER,
> IPI_WAKEUP,
>
> ... But it feels like a good starting point.
For the tracing po
Background
==
Detecting IPI *reception* is relatively easy, e.g. using
trace_irq_handler_{entry,exit} or even just function-trace
flush_smp_call_function_queue() for SMP calls.
Figuring out their *origin*, is trickier as there is no generic tracepoint tied
to e.g. smp_call_function():
