> #
> # SPDX-License-Identifier: GPL-2.0-only
> 
> -TEST_DESC="LTTng - Event traker test"
> +TEST_DESC="LTTng - Event tracker test"
> 
> CURDIR=$(dirname "$0")/
> TESTDIR="$CURDIR/../../.."
> @@ -42,6 +42,8 @@ function prepare_ust_app
> 
>       $TESTAPP_BIN -i $NR_ITER -w $NR_USEC_WAIT -a "$AFTER_FIRST_PATH" -b
>       "$BEFORE_LAST_PATH" &
>       CHILD_PID=$!
> +     # voluntary context switch to start $TESTAPP_BIN
> +     sleep 0.1

A wait on the $AFTER_FIRST_PATH file would be probably more deterministic than 
a sleep here.

  while [ ! -f "${AFTER_FIRST_PATH}" ]; do
          sleep 0.1
  done

I would also expect something similar for the `prepare_kernel_app` function 
considering the same race is most probably present and simply not triggered by 
a chance of luck.
Seems like gen-kernel-test-events does not expose the same sync capabilities 
here, please use gen-ust-events as an example of how it is done.

Let us know how your testing goes.

Thanks
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