x86/resctrl: Handle removing directories in Sub-NUMA Cluster (SNC) mode

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In SNC mode, there are multiple subdirectories in each L3 level monitor
directory (one for each SNC node). If all the CPUs in an SNC node are taken
offline, just remove the SNC directory for that node. In non-SNC mode, or when
the last SNC node directory is removed, remove the L3 monitor directory.

Add a helper function to avoid duplicated code.

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/r/20240702173820.90368-2-tony.luck@intel.com

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Tony Luck 2024-07-02 10:38:19 -07:00 • committed by Borislav Petkov (AMD)

parent 0158ed6a13

commit 6b48b80b08

1 changed files with 29 additions and 6 deletions

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

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