2023-06-30 17:32:07 +02:00
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What: /sys/kernel/debug/qat_<device>_<BDF>/qat/fw_counters
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Date: November 2023
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KernelVersion: 6.6
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Contact: qat-linux@intel.com
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Description: (RO) Read returns the number of requests sent to the FW and the number of responses
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received from the FW for each Acceleration Engine
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Reported firmware counters::
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<N>: Number of requests sent from Acceleration Engine N to FW and responses
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Acceleration Engine N received from FW
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2023-06-30 19:03:57 +02:00
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What: /sys/kernel/debug/qat_<device>_<BDF>/heartbeat/config
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Date: November 2023
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KernelVersion: 6.6
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Contact: qat-linux@intel.com
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Description: (RW) Read returns value of the Heartbeat update period.
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Write to the file changes this period value.
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This period should reflect planned polling interval of device
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health status. High frequency Heartbeat monitoring wastes CPU cycles
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but minimizes the customer’s system downtime. Also, if there are
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large service requests that take some time to complete, high frequency
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Heartbeat monitoring could result in false reports of unresponsiveness
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and in those cases, period needs to be increased.
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This parameter is effective only for c3xxx, c62x, dh895xcc devices.
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4xxx has this value internally fixed to 200ms.
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Default value is set to 500. Minimal allowed value is 200.
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All values are expressed in milliseconds.
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What: /sys/kernel/debug/qat_<device>_<BDF>/heartbeat/queries_failed
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Date: November 2023
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KernelVersion: 6.6
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Contact: qat-linux@intel.com
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Description: (RO) Read returns the number of times the device became unresponsive.
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Attribute returns value of the counter which is incremented when
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status query results negative.
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What: /sys/kernel/debug/qat_<device>_<BDF>/heartbeat/queries_sent
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Date: November 2023
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KernelVersion: 6.6
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Contact: qat-linux@intel.com
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Description: (RO) Read returns the number of times the control process checked
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if the device is responsive.
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Attribute returns value of the counter which is incremented on
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every status query.
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What: /sys/kernel/debug/qat_<device>_<BDF>/heartbeat/status
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Date: November 2023
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KernelVersion: 6.6
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Contact: qat-linux@intel.com
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Description: (RO) Read returns the device health status.
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Returns 0 when device is healthy or -1 when is unresponsive
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or the query failed to send.
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The driver does not monitor for Heartbeat. It is left for a user
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to poll the status periodically.
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