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With cache-aware scheduling enabled, each task is assigned a preferred LLC ID. This allows quick identification of the LLC domain where the task prefers to run, similar to numa_preferred_nid in NUMA balancing. Co-developed-by: Chen Yu <yu.c.chen@intel.com> Signed-off-by: Chen Yu <yu.c.chen@intel.com> Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://patch.msgid.link/f2ceecba5858680349ad4ce9303a2121f0bb7272.1775065312.git.tim.c.chen@linux.intel.com