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Needed to get tracing cleanup and add mmio tracing series. Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,12 @@ | ||
| What: /sys/firmware/efi/vars | ||
| Date: April 2004, removed March 2023 | ||
| Description: | ||
| This directory exposed interfaces for interacting with | ||
| EFI variables. For more information on EFI variables, | ||
| see 'Variable Services' in the UEFI specification | ||
| (section 7.2 in specification version 2.3 Errata D). | ||
|
|
||
| The 'efivars' sysfs interface was removed in March of 2023, | ||
| after being considered deprecated no later than September | ||
| of 2020. Its functionality has been replaced by the | ||
| 'efivarfs' filesystem. |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| What: /sys/kernel/debug/msi-wmi-platform-<wmi_device_name>/* | ||
| Date: April 2024 | ||
| KernelVersion: 6.10 | ||
| Contact: Armin Wolf <W_Armin@gmx.de> | ||
| Description: | ||
| This file allows to execute the associated WMI method with the same name. | ||
|
|
||
| To start the execution, write a buffer containing the method arguments | ||
| at file offset 0. Partial writes or writes at a different offset are not | ||
| supported. | ||
|
|
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| The buffer returned by the WMI method can then be read from the file. | ||
|
|
||
| See Documentation/wmi/devices/msi-wmi-platform.rst for details. |
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113 changes: 113 additions & 0 deletions
113
Documentation/ABI/testing/sysfs-bus-event_source-devices-hisi_ptt
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| What: /sys/bus/event_source/devices/hisi_ptt<sicl_id>_<core_id>/tune | ||
| Date: October 2022 | ||
| KernelVersion: 6.1 | ||
| Contact: Yicong Yang <yangyicong@hisilicon.com> | ||
| 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. | ||
|
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||
| What: /sys/bus/event_source/devices/hisi_ptt<sicl_id>_<core_id>/tune/qos_tx_cpl | ||
| Date: October 2022 | ||
| KernelVersion: 6.1 | ||
| Contact: Yicong Yang <yangyicong@hisilicon.com> | ||
| 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/bus/event_source/devices/hisi_ptt<sicl_id>_<core_id>/tune/qos_tx_np | ||
| Date: October 2022 | ||
| KernelVersion: 6.1 | ||
| Contact: Yicong Yang <yangyicong@hisilicon.com> | ||
| 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. | ||
|
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| What: /sys/bus/event_source/devices/hisi_ptt<sicl_id>_<core_id>/tune/qos_tx_p | ||
| Date: October 2022 | ||
| KernelVersion: 6.1 | ||
| Contact: Yicong Yang <yangyicong@hisilicon.com> | ||
| 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/bus/event_source/devices/hisi_ptt<sicl_id>_<core_id>/tune/rx_alloc_buf_level | ||
| Date: October 2022 | ||
| KernelVersion: 6.1 | ||
| Contact: Yicong Yang <yangyicong@hisilicon.com> | ||
| 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. | ||
|
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| What: /sys/bus/event_source/devices/hisi_ptt<sicl_id>_<core_id>/tune/tx_alloc_buf_level | ||
| Date: October 2022 | ||
| KernelVersion: 6.1 | ||
| Contact: Yicong Yang <yangyicong@hisilicon.com> | ||
| 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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| What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/root_port_filters | ||
| Date: May 2023 | ||
| KernelVersion: 6.5 | ||
| Contact: Yicong Yang <yangyicong@hisilicon.com> | ||
| Description: This directory contains the files providing the PCIe Root Port filters | ||
| information used for PTT trace. Each file is named after the supported | ||
| Root Port device name <domain>:<bus>:<device>.<function>. | ||
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||
| See the description of the "filter" in Documentation/trace/hisi-ptt.rst | ||
| for more information. | ||
|
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| What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/root_port_filters/multiselect | ||
| Date: May 2023 | ||
| KernelVersion: 6.5 | ||
| Contact: Yicong Yang <yangyicong@hisilicon.com> | ||
| Description: (Read) Indicates if this kind of filter can be selected at the same | ||
| time as others filters, or must be used on it's own. 1 indicates | ||
| the former case and 0 indicates the latter. | ||
|
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||
| What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/root_port_filters/<bdf> | ||
| Date: May 2023 | ||
| KernelVersion: 6.5 | ||
| Contact: Yicong Yang <yangyicong@hisilicon.com> | ||
| Description: (Read) Indicates the filter value of this Root Port filter, which | ||
| can be used to control the TLP headers to trace by the PTT trace. | ||
|
|
||
| What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/requester_filters | ||
| Date: May 2023 | ||
| KernelVersion: 6.5 | ||
| Contact: Yicong Yang <yangyicong@hisilicon.com> | ||
| Description: This directory contains the files providing the PCIe Requester filters | ||
| information used for PTT trace. Each file is named after the supported | ||
| Endpoint device name <domain>:<bus>:<device>.<function>. | ||
|
|
||
| See the description of the "filter" in Documentation/trace/hisi-ptt.rst | ||
| for more information. | ||
|
|
||
| What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/requester_filters/multiselect | ||
| Date: May 2023 | ||
| KernelVersion: 6.5 | ||
| Contact: Yicong Yang <yangyicong@hisilicon.com> | ||
| Description: (Read) Indicates if this kind of filter can be selected at the same | ||
| time as others filters, or must be used on it's own. 1 indicates | ||
| the former case and 0 indicates the latter. | ||
|
|
||
| What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/requester_filters/<bdf> | ||
| Date: May 2023 | ||
| KernelVersion: 6.5 | ||
| Contact: Yicong Yang <yangyicong@hisilicon.com> | ||
| Description: (Read) Indicates the filter value of this Requester filter, which | ||
| can be used to control the TLP headers to trace by the PTT trace. |
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