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

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

diff --git a/Documentation/ABI/testing/sysfs-devices-hisi_ptt b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hisi_ptt
similarity index 90%
rename from Documentation/ABI/testing/sysfs-devices-hisi_ptt
rename to Documentation/ABI/testing/sysfs-bus-event_source-devices-hisi_ptt
index d7e206b4901c092babc3ca87e2b13df6c51207b3..1119766564d7de51142bdb38568cfe1e42b17262 100644 (file)
--- a/Documentation/ABI/testing/sysfs-devices-hisi_ptt
+++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hisi_ptt
@@ -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>

diff --git a/Documentation/trace/hisi-ptt.rst b/Documentation/trace/hisi-ptt.rst
index 989255eb56221e7fe56d990f03cc7e2970c9a4c5..6eef28ebb0c7b94697b62ec5adbd48b6ba0f8bc7 100644 (file)
--- a/Documentation/trace/hisi-ptt.rst
+++ b/Documentation/trace/hisi-ptt.rst
@@ -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

diff --git a/MAINTAINERS b/MAINTAINERS
index c23fda1aa1f092302910e962e7ce8c107030a3ca..63a55f1559f461dca992679f400e833ce9a1f89a 100644 (file)
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -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