linux-dev/include/trace/events/scmi.h, branch linus/master

include: trace: Add new scmi_xfer_response_wait event

2021-12-13T17:45:36Z

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 Signed-off-by: Cristian Marussi Signed-off-by: Sudeep Holla

firmware: arm_scmi: Use signed integer to report transfer status

2020-06-30T13:07:08Z

Currently the trace event 'scmi_xfer_end' reports the status of the transfer using the unsigned status field read from the firmware which may not be easy to interpret. It may also miss to emit any timeouts that happen in the driver resulting in emitting garbage in the status field in those scenarios. Let us use signed integer so that error values are emitted out after they are mapped from firmware error formats to standard linux error codes. While at this, also include any timeouts in the driver itself. Link: https://lore.kernel.org/r/20200609134503.55860-1-sudeep.holla@arm.com Cc: Jim Quinlan Cc: Lukasz Luba Reviewed-by: Lukasz Luba Signed-off-by: Sudeep Holla

include: trace: Add SCMI header with trace events

2019-12-30T12:34:29Z

Adding trace events would help to measure the speed of the communication channel. It can be also potentially used helpful during investigation of some issues platforms which use different transport layer. Update also MAINTAINERS file with information that the new trace events are maintained. Suggested-by: Jim Quinlan Signed-off-by: Lukasz Luba Signed-off-by: Sudeep Holla