linux/Documentation/admin-guide/perf, branch v6.13

perf/marvell: Marvell PEM performance monitor support

2024-10-28T17:35:35Z

PCI Express Interface PMU includes various performance counters to monitor the data that is transmitted over the PCIe link. The counters track various inbound and outbound transactions which includes separate counters for posted/non-posted/completion TLPs. Also, inbound and outbound memory read requests along with their latencies can also be monitored. Address Translation Services(ATS)events such as ATS Translation, ATS Page Request, ATS Invalidation along with their corresponding latencies are also supported. The performance counters are 64 bits wide. For instance, perf stat -e ib_tlp_pr tracks the inbound posted TLPs for the workload. Co-developed-by: Linu Cherian Signed-off-by: Linu Cherian Signed-off-by: Gowthami Thiagarajan Link: https://lore.kernel.org/r/20241028055309.17893-1-gthiagarajan@marvell.com Signed-off-by: Will Deacon

perf: Add driver for Arm NI-700 interconnect PMU

2024-09-06T11:58:28Z

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]

2024-08-30T10:43:10Z

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

2024-08-23T15:07:25Z

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

2024-04-19T14:59:30Z

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

2024-04-19T14:59:29Z

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

2024-04-19T14:59:29Z

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

2024-04-19T14:59:28Z

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

2024-04-19T14:59:28Z

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

2024-03-05T13:42:30Z

`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