diff options
| author | K Prateek Nayak <kprateek.nayak@amd.com> | 2024-11-15 06:07:58 +0000 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2024-12-02 12:01:35 +0100 |
| commit | e4b444347795a1ecc083895582bc2e7f288a22e4 (patch) | |
| tree | af1539edb81b3032985838dc733f7d30cfc6cb59 /arch/x86/include/asm/processor.h | |
| parent | 2f2db347071a8736c2adcdbf2658ce532e0afc0a (diff) | |
x86/topology: Introduce topology_logical_core_id()
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
Diffstat (limited to 'arch/x86/include/asm/processor.h')
| -rw-r--r-- | arch/x86/include/asm/processor.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index c0975815980c..cfd8a5591421 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -98,6 +98,7 @@ struct cpuinfo_topology { // Logical ID mappings u32 logical_pkg_id; u32 logical_die_id; + u32 logical_core_id; // AMD Node ID and Nodes per Package info u32 amd_node_id; |