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- Subsystem Trace Points: rpm_smd
- The rpm-smd tracing system captures the events related to sending/receiving
- messages to/from RPM hardware. The tracing system adds the following events to
- capture the transactions with the RPM driver.
- 1) RPM send message
- ===================
- rpm_send_message: ctx:%s set:%s rsc_type:0%x(%s),rsc_id:i0x%x, id:%u
- The event captures the parameters of the message that was sent to the RPM.
- The 'ctx' parameters takes one of the following string constants to indicate
- if the request was made in atomic/non-atomic context.
- . "sleep" - non-atomic context
- . "noslp" - atomic context
- The 'set' parameter takes one of the following string values to indicate if
- the message affects active or sleep set value of the resource
- . "act" - active set configuraion
- . "slp" - sleep set configuration
- The 'rsc_type' and 'rsc_id' identify the resource whose parametes is being
- modified. The 4 bytes string equivalent of the resource type is also displayed
- for easier identification of resources.
- The 'id' parameter is the id that RPM uses to acknowledge the receipt of the
- message in its ACK message
- 2) RPM ack message
- =================
- rpm_ack_recd: ctx:%s id:%u
- The event captures the acknowledgement messages received from the RPM after
- successfully send a message request.
- The 'ctx' parameter has the same string constants referred to the "RPM Send
- Message"
- The 'id' parameter is the id that RPM uses to acknowledge the receipt of the
- message in its ACK message
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