x86/resctrl: Enable RDT_RESOURCE_PERF_PKG

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Since telemetry events are enumerated on resctrl mount the RDT_RESOURCE_PERF_PKG
resource is not considered "monitoring capable" during early resctrl initialization.
This means that the domain list for RDT_RESOURCE_PERF_PKG is not built when the CPU
hotplug notifiers are registered and run for the first time right after resctrl
initialization.

Mark the RDT_RESOURCE_PERF_PKG as "monitoring capable" upon successful telemetry
event enumeration to ensure future CPU hotplug events include this resource and
initialize its domain list for CPUs that are already online.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lore.kernel.org/20251217172121.12030-1-tony.luck@intel.com

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Tony Luck 2026-01-08 09:42:27 -08:00 • committed by Borislav Petkov (AMD)

parent d0891647fb

commit 4bbfc90122

2 changed files with 22 additions and 0 deletions

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16

arch/x86/kernel/cpu/resctrl/core.c

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6

arch/x86/kernel/cpu/resctrl/intel_aet.c

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