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- What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/tune
- Date: October 2022
- KernelVersion: 6.1
- Contact: Yicong Yang <[email protected]>
- Description: This directory contains files for tuning the PCIe link
- parameters(events). Each file is named after the event
- of the PCIe link.
- See Documentation/trace/hisi-ptt.rst for more information.
- What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/tune/qos_tx_cpl
- Date: October 2022
- KernelVersion: 6.1
- Contact: Yicong Yang <[email protected]>
- Description: (RW) Controls the weight of Tx completion TLPs, which influence
- the proportion of outbound completion TLPs on the PCIe link.
- The available tune data is [0, 1, 2]. Writing a negative value
- will return an error, and out of range values will be converted
- to 2. The value indicates a probable level of the event.
- What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/tune/qos_tx_np
- Date: October 2022
- KernelVersion: 6.1
- Contact: Yicong Yang <[email protected]>
- Description: (RW) Controls the weight of Tx non-posted TLPs, which influence
- the proportion of outbound non-posted TLPs on the PCIe link.
- The available tune data is [0, 1, 2]. Writing a negative value
- will return an error, and out of range values will be converted
- to 2. The value indicates a probable level of the event.
- What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/tune/qos_tx_p
- Date: October 2022
- KernelVersion: 6.1
- Contact: Yicong Yang <[email protected]>
- Description: (RW) Controls the weight of Tx posted TLPs, which influence the
- proportion of outbound posted TLPs on the PCIe link.
- The available tune data is [0, 1, 2]. Writing a negative value
- will return an error, and out of range values will be converted
- to 2. The value indicates a probable level of the event.
- What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/tune/rx_alloc_buf_level
- Date: October 2022
- KernelVersion: 6.1
- Contact: Yicong Yang <[email protected]>
- Description: (RW) Control the allocated buffer watermark for inbound packets.
- The packets will be stored in the buffer first and then transmitted
- either when the watermark reached or when timed out.
- The available tune data is [0, 1, 2]. Writing a negative value
- will return an error, and out of range values will be converted
- to 2. The value indicates a probable level of the event.
- What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/tune/tx_alloc_buf_level
- Date: October 2022
- KernelVersion: 6.1
- Contact: Yicong Yang <[email protected]>
- Description: (RW) Control the allocated buffer watermark of outbound packets.
- The packets will be stored in the buffer first and then transmitted
- either when the watermark reached or when timed out.
- The available tune data is [0, 1, 2]. Writing a negative value
- will return an error, and out of range values will be converted
- to 2. The value indicates a probable level of the event.
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