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In x86, hardware uses CLOSID to identify a control group. When a user creates a control group this information is not visible to the user. It can help resctrl debugging. Add CLOSID(ctrl_hw_id) to the control groups display in the resctrl interface. Users can see this detail when resctrl is mounted with the "-o debug" option. Other architectures do not use "CLOSID". Use the names ctrl_hw_id to refer to "CLOSID" in an effort to keep the naming generic. For example: $cat /sys/fs/resctrl/ctrl_grp1/ctrl_hw_id 1 Signed-off-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Peter Newman <peternewman@google.com> Reviewed-by: Tan Shaopeng <tan.shaopeng@jp.fujitsu.com> Reviewed-by: Fenghua Yu <fenghua.yu@intel.com> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Tested-by: Peter Newman <peternewman@google.com> Tested-by: Tan Shaopeng <tan.shaopeng@jp.fujitsu.com> Link: https://lore.kernel.org/r/20231017002308.134480-8-babu.moger@amd.com