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e4b4443477
On x86, topology_core_id() returns a unique core ID within the PKG domain. Looking at match_smt() suggests that a core ID just needs to be unique within a LLC domain. For use cases such as the core RAPL PMU, there exists a need for a unique core ID across the entire system with multiple PKG domains. Introduce topology_logical_core_id() to derive a unique core ID across the system. Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com> Signed-off-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Zhang Rui <rui.zhang@intel.com> Reviewed-by: "Gautham R. Shenoy" <gautham.shenoy@amd.com> Tested-by: K Prateek Nayak <kprateek.nayak@amd.com> Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name> Link: https://lore.kernel.org/r/20241115060805.447565-3-Dhananjay.Ugwekar@amd.com