diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2024-02-14 00:06:07 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-02-16 00:07:44 +0300 |
| commit | b7065f4f844c7876ed071b67e2ba57838152bd63 (patch) | |
| tree | 546d6ab2b9e1c34156b64be639e825fb35e8b1a0 /arch/x86/include | |
| parent | 5e40fb2d4a4c7503cab4f923b7d985dbcf583581 (diff) | |
| download | linux-b7065f4f844c7876ed071b67e2ba57838152bd63.tar.xz | |
x86/cpu/topology: Provide logical pkg/die mapping
With the topology bitmaps in place the logical package and die IDs can
trivially be retrieved by determining the bitmap weight of the relevant
topology domain level up to and including the physical ID in question.
Provide a function to that effect.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mhklinux@outlook.com>
Tested-by: Sohil Mehta <sohil.mehta@intel.com>
Link: https://lore.kernel.org/r/20240213210252.846136196@linutronix.de
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/topology.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h index 94ef1a620234..bdd6a984b22c 100644 --- a/arch/x86/include/asm/topology.h +++ b/arch/x86/include/asm/topology.h @@ -156,6 +156,15 @@ static inline unsigned int topology_max_die_per_package(void) return __max_dies_per_package; } +#ifdef CONFIG_X86_LOCAL_APIC +int topology_get_logical_id(u32 apicid, enum x86_topology_domains at_level); +#else +static inline int topology_get_logical_id(u32 apicid, enum x86_topology_domains at_level) +{ + return 0; +} +#endif + #ifdef CONFIG_SMP #define topology_cluster_id(cpu) (cpu_data(cpu).topo.l2c_id) #define topology_die_cpumask(cpu) (per_cpu(cpu_die_map, cpu)) |