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Commit f5ce1572 authored by Sahara's avatar Sahara Committed by Rafael J. Wysocki
Browse files

PM / QoS: Add pm_qos and dev_pm_qos to events-power.txt 



Add PM QOS events section and description to events-power.txt.

Signed-off-by: default avatarSahara <keun-o.park@windriver.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 96d9d0b5

Documentation/trace/events-power.txt

+31 −0
Original line number Diff line number Diff line
@@ -63,3 +63,34 @@ power_domain_target "%s state=%lu cpu_id=%lu" 
The first parameter gives the power domain name (e.g. "mpu_pwrdm").

The second parameter is the power domain target state.



4. PM QoS events

================

The PM QoS events are used for QoS add/update/remove request and for

target/flags update.



pm_qos_add_request                 "pm_qos_class=%s value=%d"

pm_qos_update_request              "pm_qos_class=%s value=%d"

pm_qos_remove_request              "pm_qos_class=%s value=%d"

pm_qos_update_request_timeout      "pm_qos_class=%s value=%d, timeout_us=%ld"



The first parameter gives the QoS class name (e.g. "CPU_DMA_LATENCY").

The second parameter is value to be added/updated/removed.

The third parameter is timeout value in usec.



pm_qos_update_target               "action=%s prev_value=%d curr_value=%d"

pm_qos_update_flags                "action=%s prev_value=0x%x curr_value=0x%x"



The first parameter gives the QoS action name (e.g. "ADD_REQ").

The second parameter is the previous QoS value.

The third parameter is the current QoS value to update.



And, there are also events used for device PM QoS add/update/remove request.



dev_pm_qos_add_request             "device=%s type=%s new_value=%d"

dev_pm_qos_update_request          "device=%s type=%s new_value=%d"

dev_pm_qos_remove_request          "device=%s type=%s new_value=%d"



The first parameter gives the device name which tries to add/update/remove

QoS requests.

The second parameter gives the request type (e.g. "DEV_PM_QOS_LATENCY").

The third parameter is value to be added/updated/removed.