diff options
Diffstat (limited to 'arch/arm64/kernel/topology.c')
| -rw-r--r-- | arch/arm64/kernel/topology.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/arm64/kernel/topology.c b/arch/arm64/kernel/topology.c index 8d48b233e6ce..6eb9350be46f 100644 --- a/arch/arm64/kernel/topology.c +++ b/arch/arm64/kernel/topology.c @@ -21,6 +21,7 @@ #include <linux/of.h> #include <linux/sched.h> #include <linux/sched/topology.h> +#include <linux/sched/energy.h> #include <linux/slab.h> #include <linux/string.h> @@ -280,8 +281,58 @@ void store_cpu_topology(unsigned int cpuid) topology_populated: update_siblings_masks(cpuid); + topology_detect_flags(); } +#ifdef CONFIG_SCHED_SMT +static int smt_flags(void) +{ + return cpu_smt_flags() | topology_smt_flags(); +} +#endif + +#ifdef CONFIG_SCHED_MC +static int core_flags(void) +{ + return cpu_core_flags() | topology_core_flags(); +} +#endif + +static int cpu_flags(void) +{ + return topology_cpu_flags(); +} + +static inline +const struct sched_group_energy * const cpu_core_energy(int cpu) +{ + return sge_array[cpu][SD_LEVEL0]; +} + +static inline +const struct sched_group_energy * const cpu_cluster_energy(int cpu) +{ + return sge_array[cpu][SD_LEVEL1]; +} + +static inline +const struct sched_group_energy * const cpu_system_energy(int cpu) +{ + return sge_array[cpu][SD_LEVEL2]; +} + +static struct sched_domain_topology_level arm64_topology[] = { +#ifdef CONFIG_SCHED_SMT + { cpu_smt_mask, smt_flags, SD_INIT_NAME(SMT) }, +#endif +#ifdef CONFIG_SCHED_MC + { cpu_coregroup_mask, core_flags, cpu_core_energy, SD_INIT_NAME(MC) }, +#endif + { cpu_cpu_mask, cpu_flags, cpu_cluster_energy, SD_INIT_NAME(DIE) }, + { cpu_cpu_mask, NULL, cpu_system_energy, SD_INIT_NAME(SYS) }, + { NULL, } +}; + static void __init reset_cpu_topology(void) { unsigned int cpu; @@ -310,4 +361,6 @@ void __init init_cpu_topology(void) */ if (of_have_populated_dt() && parse_dt_topology()) reset_cpu_topology(); + else + set_sched_topology(arm64_topology); } |