diff options
| -rw-r--r-- | arch/arm64/include/asm/topology.h | 2 | ||||
| -rw-r--r-- | arch/arm64/kernel/topology.c | 14 |
2 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/topology.h b/arch/arm64/include/asm/topology.h index df48212f767b..4c073d28f9e4 100644 --- a/arch/arm64/include/asm/topology.h +++ b/arch/arm64/include/asm/topology.h @@ -20,9 +20,11 @@ extern struct cpu_topology cpu_topology[NR_CPUS]; #define topology_core_id(cpu) (cpu_topology[cpu].core_id) #define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_sibling) #define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_sibling) +#define topology_llc_cpumask(cpu) (&cpu_topology[cpu].llc_siblings) void init_cpu_topology(void); void store_cpu_topology(unsigned int cpuid); +void remove_cpu_topology(unsigned int cpuid); const struct cpumask *cpu_coregroup_mask(int cpu); #ifdef CONFIG_NUMA diff --git a/arch/arm64/kernel/topology.c b/arch/arm64/kernel/topology.c index b64733c5ea28..cb81df545359 100644 --- a/arch/arm64/kernel/topology.c +++ b/arch/arm64/kernel/topology.c @@ -322,6 +322,20 @@ static void __init reset_cpu_topology(void) } } +void remove_cpu_topology(unsigned int cpu) +{ + int sibling; + + for_each_cpu(sibling, topology_core_cpumask(cpu)) + cpumask_clear_cpu(cpu, topology_core_cpumask(sibling)); + for_each_cpu(sibling, topology_sibling_cpumask(cpu)) + cpumask_clear_cpu(cpu, topology_sibling_cpumask(sibling)); + for_each_cpu(sibling, topology_llc_cpumask(cpu)) + cpumask_clear_cpu(cpu, topology_llc_cpumask(sibling)); + + clear_cpu_topology(cpu); +} + #ifdef CONFIG_ACPI /* * Propagate the topology information of the processor_topology_node tree to the |