linux.git/Documentation/admin-guide/perf, branch v6.12.80

perf: Add driver for Arm NI-700 interconnect PMU

2024-09-06T11:58:28+00:00

The Arm NI-700 Network-on-Chip Interconnect has a relatively
straightforward design with a hierarchy of voltage, power, and clock
domains, where each clock domain then contains a number of interface
units and a PMU which can monitor events thereon. As such, it begets a
relatively straightforward driver to interface those PMUs with perf.

Even more so than with arm-cmn, users will require detailed knowledge of
the wider system topology in order to meaningfully analyse anything,
since the interconnect itself cannot know what lies beyond the boundary
of each inscrutably-numbered interface. Given that, for now they are
also expected to refer to the NI-700 documentation for the relevant
event IDs to provide as well. An identifier is implemented so we can
come back and add jevents if anyone really wants to.

Signed-off-by: Robin Murphy 
Link: https://lore.kernel.org/r/9933058d0ab8138c78a61cd6852ea5d5ff48e393.1725470837.git.robin.murphy@arm.com
Signed-off-by: Will Deacon

drivers/perf: hisi_pcie: Export supported Root Ports [bdf_min, bdf_max]

2024-08-30T10:43:10+00:00

Currently users can get the Root Ports supported by the PCIe PMU by
"bus" sysfs attributes which indicates the PCIe bus number where
Root Ports are located. This maybe insufficient since Root Ports
supported by different PCIe PMUs may be located on the same PCIe bus.
So export the BDF range the Root Ports additionally.

Signed-off-by: Yicong Yang 
Acked-by: Jonathan Cameron 
Link: https://lore.kernel.org/r/20240829090332.28756-4-yangyicong@huawei.com
Signed-off-by: Will Deacon

Documentation: dwc_pcie_pmu: Update bdf to sbdf

2024-08-23T15:07:25+00:00

Update document to reflect the driver change to use sbdf instead
of bdf alone.

Signed-off-by: Krishna chaitanya chundru 
Reviewed-by: Yicong Yang 
Link: https://lore.kernel.org/r/20240816-dwc_pmu_fix-v2-2-198b8ab1077c@quicinc.com
Signed-off-by: Will Deacon

Documentation: qcom-pmu: Use /sys/bus/event_source/devices paths

2024-04-19T14:59:30+00:00

To allow setting an appropriate parent for the struct pmu device
remove existing references to /sys/devices/ path.

Signed-off-by: Jonathan Cameron 
Link: https://lore.kernel.org/r/20240412161057.14099-14-Jonathan.Cameron@huawei.com
Signed-off-by: Will Deacon

Documentation: thunderx2-pmu: Use /sys/bus/event_source/devices paths

2024-04-19T14:59:29+00:00

To allow setting an appropriate parent for the struct pmu device
remove existing references to /sys/devices/ path.

Signed-off-by: Jonathan Cameron 
Link: https://lore.kernel.org/r/20240412161057.14099-11-Jonathan.Cameron@huawei.com
Signed-off-by: Will Deacon

Documentation: xgene-pmu: Use /sys/bus/event_source/devices paths

2024-04-19T14:59:29+00:00

To allow setting an appropriate parent for the struct pmu device
remove existing references to /sys/devices/ path.

Signed-off-by: Jonathan Cameron 
Link: https://lore.kernel.org/r/20240412161057.14099-9-Jonathan.Cameron@huawei.com
Signed-off-by: Will Deacon

Documentation: hns-pmu: Use /sys/bus/event_source/devices paths

2024-04-19T14:59:28+00:00

To allow setting an appropriate parent for the struct pmu device
remove existing references to /sys/devices/ path.

Reviewed-by: Greg Kroah-Hartman 
Signed-off-by: Jonathan Cameron 
Link: https://lore.kernel.org/r/20240412161057.14099-5-Jonathan.Cameron@huawei.com
Signed-off-by: Will Deacon

Documentation: hisi-pmu: Drop reference to /sys/devices path

2024-04-19T14:59:28+00:00

Having assigned a parent to the device, the suggested path is
no longer valid.  As /sys/bus/event_sources based path is also
provided, simply drop mention of alternative.

Reviewed-by: Yicong Yang 
Reviewed-by: Greg Kroah-Hartman 
Signed-off-by: Jonathan Cameron 
Link: https://lore.kernel.org/r/20240412161057.14099-3-Jonathan.Cameron@huawei.com
Signed-off-by: Will Deacon

docs: perf: Fix build warning of hisi-pcie-pmu.rst

2024-03-05T13:42:30+00:00

`make htmldocs SPHINXDIRS="admin-guide"` shows below warnings:
Documentation/admin-guide/perf/hisi-pcie-pmu.rst:48: ERROR: Unexpected indentation.
Documentation/admin-guide/perf/hisi-pcie-pmu.rst:49: WARNING: Block quote ends without a blank line; unexpected unindent.

Fix this.

Closes: https://lore.kernel.org/lkml/20231011172250.5a6498e5@canb.auug.org.au/
Fixes: 89a032923d4b ("docs: perf: Update usage for target filter of hisi-pcie-pmu")
Signed-off-by: Yicong Yang 
Link: https://lore.kernel.org/r/20240305122517.12179-1-yangyicong@huawei.com
Signed-off-by: Will Deacon

docs: perf: Add description for StarFive's StarLink PMU

2024-03-04T14:19:48+00:00

StarFive StarLink PMU support monitoring L3 memory system PMU events.
Add documentation to describe StarFive StarLink PMU support and it's
usage.

Signed-off-by: Ji Sheng Teoh 
Link: https://lore.kernel.org/r/20240229072720.3987876-4-jisheng.teoh@starfivetech.com
Signed-off-by: Will Deacon