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Having a new step to trace SCMI stack while it waits for synchronous responses is useful to analyze system performance when changing waiting mode between polling and interrupt completion. Link: https://lore.kernel.org/r/20211129191156.29322-5-cristian.marussi@arm.com Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>