Public bug reported:
This branch fixes a few MPAM issues including:
Performance issue due to small MBW_MIN on Grace: nvb5928376
Performance issue due to 0 CMAX on Vera: nvb5717435
Stress Online/offline issue on Vera: nvb5919525
Clean up numa node MBA/MBM code to avoid future issues.
There are total 49 patches:
- The first 10 patches revert ARM's extra patches which are numa node, event
filter, and mem hotplug patches. The patches are buggy and cause most of the
above issues.
- The patches 11 and 12 revert old buggy T241-MPAM-4 Grace erratum
workaround and apply an updated one.
- The patches 13-42 are from resctrl upstream for mainly alignment of
monitoring type for the later numa patches.
- The patches 43-49 are mainly supporting CPU-less and numa node, plus
fixing IOMMU, MSC tear down, MBWU type issues.
This is patches list:
0001-Revert-NVIDIA-SAUCE-untested-arm_mpam-resctrl-Allow-.patch
0002-Revert-NVIDIA-SAUCE-arm_mpam-resctrl-Add-NUMA-node-n.patch
0003-Revert-NVIDIA-SAUCE-untested-arm_mpam-resctrl-Split-.patch
0004-Revert-NVIDIA-SAUCE-arm_mpam-resctrl-Change-domain_h.patch
0005-Revert-NVIDIA-SAUCE-arm_mpam-resctrl-Pick-whether-MB.patch
0006-Revert-NVIDIA-SAUCE-Fix-unused-variable-warning.patch
0007-Revert-NVIDIA-SAUCE-fs-resctrl-Add-mount-option-for-.patch
0008-Revert-NVIDIA-SAUCE-fs-resctrl-Take-memory-hotplug-l.patch
0009-Revert-NVIDIA-SAUCE-mm-memory_hotplug-Add-lockdep-as.patch
0010-Revert-NVIDIA-SAUCE-untested-arm_mpam-resctrl-Allow-.patch
0011-Revert-NVIDIA-SAUCE-arm_mpam-Add-workaround-for-T241.patch
0012-NVIDIA-SAUCE-arm_mpam-Add-workaround-for-T241-MPAM-4.patch
0013-x86-fs-resctrl-Improve-domain-type-checking.patch
0014-x86-resctrl-Move-L3-initialization-into-new-helper-f.patch
0015-x86-resctrl-Refactor-domain_remove_cpu_mon-ready-for.patch
0016-x86-resctrl-Clean-up-domain_remove_cpu_ctrl.patch
0017-x86-fs-resctrl-Refactor-domain-create-remove-using-s.patch
0018-fs-resctrl-Split-L3-dependent-parts-out-of-mon_eve.patch
0019-x86-fs-resctrl-Use-struct-rdt_domain_hdr-when-readin.patch
0020-x86-fs-resctrl-Rename-struct-rdt_mon_domain-and-rdt.patch
0021-x86-fs-resctrl-Rename-some-L3-specific-functions.patch
0022-fs-resctrl-Make-event-details-accessible-to-function.patch
0023-x86-fs-resctrl-Handle-events-that-can-be-read-from-a.patch
0024-x86-fs-resctrl-Support-binary-fixed-point-event-coun.patch
0025-x86-fs-resctrl-Add-an-architectural-hook-called-for-.patch
0026-x86-fs-resctrl-Add-and-initialize-a-resource-for-pac.patch
0027-fs-resctrl-Emphasize-that-L3-monitoring-resource-is-.patch
0028-x86-resctrl-Discover-hardware-telemetry-events.patch
0029-x86-fs-resctrl-Fill-in-details-of-events-for-perform.patch
0030-x86-fs-resctrl-Add-architectural-event-pointer.patch
0031-x86-resctrl-Find-and-enable-usable-telemetry-events.patch
0032-x86-resctrl-Read-telemetry-events.patch
0033-fs-resctrl-Refactor-mkdir_mondata_subdir.patch
0034-fs-resctrl-Refactor-rmdir_mondata_subdir_allrdtgrp.patch
0035-x86-fs-resctrl-Handle-domain-creation-deletion-for-R.patch
0036-x86-resctrl-Add-energy-perf-choices-to-rdt-boot-opti.patch
0037-x86-resctrl-Handle-number-of-RMIDs-supported-by-RDT.patch
0038-fs-resctrl-Move-allocation-free-of-closid_num_dirty_.patch
0039-x86-fs-resctrl-Compute-number-of-RMIDs-as-minimum-ac.patch
0040-fs-resctrl-Move-RMID-initialization-to-first-mount.patch
0041-x86-resctrl-Enable-RDT_RESOURCE_PERF_PKG.patch
0042-x86-fs-resctrl-Update-documentation-for-telemetry-ev.patch
0043-NVIDIA-VR-SAUCE-arm_mpam-Fix-compilation-errors.patch
0044-NVIDIA-SAUCE-arm_mpam-Avoid-MSC-teardown-for-the-SW-.patch
0045-NVIDIA-VR-SAUCE-arm_mpam-Handle-CPU-less-numa-nodes.patch
0046-NVIDIA-VR-SAUCE-arm_mpam-Include-all-associated-MSC-.patch
0047-NVIDIA-SAUCE-resctrl-mpam-reset-RIS-by-applying-expl.patch
0048-NVIDIA-SAUCE-iommu-arm-smmu-v3-Fix-MPAM-for-indentit.patch
0049-NVIDIA-VR-SAUCE-arm_mpam-Resolve-MBWU-type-before-fe.patch
Tests performed:
- init registers test
- iommu assignment test
- online/offline test
- Spec2017 performance test
- CXL test
- GPU MPAM test
** Affects: linux-nvidia-6.17 (Ubuntu)
Importance: Undecided
Status: New
** Tags: kernel-daily-bug
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https://bugs.launchpad.net/bugs/2146389
Title:
Backport MPAM fixes and support for CPU-less NUMA nodes
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