arch/arm/include/asm/topology.h

   1 #ifndef _ASM_ARM_TOPOLOGY_H
   2 #define _ASM_ARM_TOPOLOGY_H
   3
   4 #ifdef CONFIG_ARM_CPU_TOPOLOGY
   5
   6 #include <linux/cpumask.h>
   7
   8 struct cputopo_arm {
   9         int thread_id;
  10         int core_id;
  11         int socket_id;
  12         cpumask_t thread_sibling;
  13         cpumask_t core_sibling;
  14 };
  15
  16 extern struct cputopo_arm cpu_topology[NR_CPUS];
  17
  18 #define topology_physical_package_id(cpu)       (cpu_topology[cpu].socket_id)
  19 #define topology_core_id(cpu)           (cpu_topology[cpu].core_id)
  20 #define topology_core_cpumask(cpu)      (&cpu_topology[cpu].core_sibling)
  21 #define topology_thread_cpumask(cpu)    (&cpu_topology[cpu].thread_sibling)
  22 #ifdef CONFIG_ARCH_SCALE_INVARIANT_CPU_CAPACITY
  23 #define CPUPOWER_FREQSCALE_SHIFT 10
  24 #define CPUPOWER_FREQSCALE_DEFAULT (1L << CPUPOWER_FREQSCALE_SHIFT)
  25 extern unsigned long arch_get_max_cpu_capacity(int);
  26 extern unsigned long arch_get_cpu_capacity(int);
  27 extern int arch_get_invariant_power_enabled(void);
  28 extern int arch_get_cpu_throttling(int);
  29
  30 #define topology_max_cpu_capacity(cpu)  (arch_get_max_cpu_capacity(cpu))
  31 #define topology_cpu_capacity(cpu)      (arch_get_cpu_capacity(cpu))
  32 #define topology_cpu_throttling(cpu)    (arch_get_cpu_capacity(cpu))
  33 #define topology_cpu_inv_power_en(void) (arch_get_invariant_power_enabled())
  34 #endif /* CONFIG_ARCH_SCALE_INVARIANT_CPU_CAPACITY */
  35
  36 #define mc_capable()    (cpu_topology[0].socket_id != -1)
  37 #define smt_capable()   (cpu_topology[0].thread_id != -1)
  38
  39 void init_cpu_topology(void);
  40 void store_cpu_topology(unsigned int cpuid);
  41 const struct cpumask *cpu_coregroup_mask(int cpu);
  42 int cluster_to_logical_mask(unsigned int socket_id, cpumask_t *cluster_mask);
  43
  44 #ifdef CONFIG_DISABLE_CPU_SCHED_DOMAIN_BALANCE
  45
  46 #if defined (CONFIG_HMP_PACK_SMALL_TASK) && !defined(CONFIG_MTK_SCHED_CMP)
  47 /* Common values for CPUs */
  48 #ifndef SD_CPU_INIT
  49 #define SD_CPU_INIT (struct sched_domain) {                             \
  50         .min_interval           = 1,                                    \
  51         .max_interval           = 4,                                    \
  52         .busy_factor            = 64,                                   \
  53         .imbalance_pct          = 125,                                  \
  54         .cache_nice_tries       = 1,                                    \
  55         .busy_idx               = 2,                                    \
  56         .idle_idx               = 1,                                    \
  57         .newidle_idx            = 0,                                    \
  58         .wake_idx               = 0,                                    \
  59         .forkexec_idx           = 0,                                    \
  60                                                                         \
  61         .flags                  = 0*SD_LOAD_BALANCE                     \
  62                                 | 1*SD_BALANCE_NEWIDLE                  \
  63                                 | 1*SD_BALANCE_EXEC                     \
  64                                 | 1*SD_BALANCE_FORK                     \
  65                                 | 0*SD_BALANCE_WAKE                     \
  66                                 | 1*SD_WAKE_AFFINE                      \
  67                                 | 0*SD_SHARE_CPUPOWER                   \
  68                                 | 0*SD_SHARE_PKG_RESOURCES              \
  69                                 | arch_sd_share_power_line()            \
  70                                 | 0*SD_SERIALIZE                        \
  71                                 ,                                       \
  72         .last_balance            = jiffies,                             \
  73         .balance_interval       = 1,                                    \
  74 }
  75 #endif
  76 #endif /* CONFIG_HMP_PACK_SMALL_TASK */
  77
  78 #endif /* CONFIG_DISABLE_CPU_SCHED_DOMAIN_BALANCE */
  79
  80 /* CPU cluster functions */
  81 extern void arch_build_cpu_topology_domain(void);
  82 extern int arch_cpu_is_big(unsigned int cpu);
  83 extern int arch_cpu_is_little(unsigned int cpu);
  84 extern int arch_is_multi_cluster(void);
  85 extern int arch_is_big_little(void);
  86 extern int arch_get_nr_clusters(void);
  87 extern int arch_get_cluster_id(unsigned int cpu);
  88 extern void arch_get_cluster_cpus(struct cpumask *cpus, int cluster_id);
  89 extern void arch_get_big_little_cpus(struct cpumask *big, struct cpumask *little);
  90
  91 #else /* !CONFIG_ARM_CPU_TOPOLOGY */
  92
  93 static inline void init_cpu_topology(void) { }
  94 static inline void store_cpu_topology(unsigned int cpuid) { }
  95 static inline int cluster_to_logical_mask(unsigned int socket_id,
  96         cpumask_t *cluster_mask) { return -EINVAL; }
  97
  98 static inline void arch_build_cpu_topology_domain(void) {}
  99 static inline int arch_cpu_is_big(unsigned int cpu) { return 0; }
 100 static inline int arch_cpu_is_little(unsigned int cpu) { return 1; }
 101 static inline int arch_is_multi_cluster(void) { return 0; }
 102 static inline int arch_is_big_little(void) { return 0; }
 103 static inline int arch_get_nr_clusters(void) { return 1; }
 104 static inline int arch_get_cluster_id(unsigned int cpu) { return 0; }
 105 static inline void arch_get_cluster_cpus(struct cpumask *cpus, int cluster_id)
 106 {
 107     cpumask_clear(cpus);
 108         if (0 == cluster_id) {
 109         unsigned int cpu;
 110                 for_each_possible_cpu(cpu)
 111                         cpumask_set_cpu(cpu, cpus);
 112         }
 113 }
 114 static inline void arch_get_big_little_cpus(struct cpumask *big,struct cpumask *little)
 115 {
 116     unsigned int cpu;
 117     cpumask_clear(big);
 118     cpumask_clear(little);
 119     for_each_possible_cpu(cpu)
 120         cpumask_set_cpu(cpu, little);
 121 }
 122
 123 #endif /* CONFIG_ARM_CPU_TOPOLOGY */
 124
 125 #include <asm-generic/topology.h>
 126
 127 #endif /* _ASM_ARM_TOPOLOGY_H */