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Documentation: ABI + trace: hisi_ptt: update paths to bus/event_source

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To allow for assigning a suitable parent to the struct pmu device
update the documentation to describe the device via the event_source
bus where it will remain accessible.

For the ABI documention file also rename the file as it is named
after the path.

Reviewed-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20240412161057.14099-30-Jonathan.Cameron@huawei.com
This commit is contained in:
Jonathan Cameron 2024-04-12 17:10:56 +01:00 committed by Suzuki K Poulose
parent 8877ef45ef
commit 1f82d58ddb
3 changed files with 9 additions and 9 deletions
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12
Documentation/ABI/testing/sysfs-devices-hisi_ptt → Documentation/ABI/testing/sysfs-bus-event_source-devices-hisi_ptt
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@ -1,4 +1,4 @@
What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/tune
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>
@ -8,7 +8,7 @@ Description: This directory contains files for tuning 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
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>
@ -18,7 +18,7 @@ Description: (RW) Controls the weight of Tx completion TLPs, which influence
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
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>
@ -28,7 +28,7 @@ Description: (RW) Controls the weight of Tx non-posted TLPs, which influence
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
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>
@ -38,7 +38,7 @@ Description: (RW) Controls the weight of Tx posted TLPs, which influence the
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
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>
@ -49,7 +49,7 @@ Description: (RW) Control the allocated buffer watermark for inbound packets.
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
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>

4
Documentation/trace/hisi-ptt.rst
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@ -40,7 +40,7 @@ IO dies (SICL, Super I/O Cluster), where there's one PCIe Root
Complex for each SICL.
::
/sys/devices/hisi_ptt<sicl_id>_<core_id>
/sys/bus/event_source/devices/hisi_ptt<sicl_id>_<core_id>
Tune
====
@ -53,7 +53,7 @@ Each event is presented as a file under $(PTT PMU dir)/tune, and
a simple open/read/write/close cycle will be used to tune the event.
::
$ cd /sys/devices/hisi_ptt<sicl_id>_<core_id>/tune
$ cd /sys/bus/event_source/devices/hisi_ptt<sicl_id>_<core_id>/tune
$ ls
qos_tx_cpl qos_tx_np qos_tx_p
tx_path_rx_req_alloc_buf_level

2
MAINTAINERS
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@ -9790,7 +9790,7 @@ M: Yicong Yang <yangyicong@hisilicon.com>
M: Jonathan Cameron <jonathan.cameron@huawei.com>
L: linux-kernel@vger.kernel.org
S: Maintained
F: Documentation/ABI/testing/sysfs-devices-hisi_ptt
F: Documentation/ABI/testing/sysfs-bus-event_source-devices-hisi_ptt
F: Documentation/trace/hisi-ptt.rst
F: drivers/hwtracing/ptt/
F: tools/perf/arch/arm64/util/hisi-ptt.c