Will smp_call_function_single(cpu, ...) broadcast IPI to all other cpus?

[Steven Rostedt]

On Thu, 27 Jun 2024 11:38:58 +0100
Marc Zyngier <maz at kernel.org> wrote:

> You may want to enable stack trace recording and find out for yourself
> where these ipi_raise() calls are coming from.

Try trace-cmd:

  # trace-cmd start -e ipi_raise -R 'stacktrace if reason=="Function call interrupts"'
  # taskset -c 0 insmod /kmods/ipi_test.ko
  # trace-cmd stop
  # trace-cmd show

-- Steve