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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: Sahara <keun-o.park@windriver.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
hifive-unleashed-5.1
Sahara 2013-06-21 11:12:31 +09:00 committed by Rafael J. Wysocki
parent 96d9d0b5dc
commit f5ce157210
1 changed files with 31 additions and 0 deletions
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31
Documentation/trace/events-power.txt
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@ -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.