1 #ifndef _ASMARM_SMP_H_ 2 #define _ASMARM_SMP_H_ 3 /* 4 * Copyright (C) 2015, Red Hat Inc, Andrew Jones <drjones@redhat.com> 5 * 6 * This work is licensed under the terms of the GNU LGPL, version 2. 7 */ 8 #include <asm/thread_info.h> 9 #include <asm/cpumask.h> 10 11 #define smp_processor_id() (current_thread_info()->cpu) 12 13 typedef void (*secondary_entry_fn)(void); 14 15 struct secondary_data { 16 void *stack; /* must be first member of struct */ 17 secondary_entry_fn entry; 18 }; 19 extern struct secondary_data secondary_data; 20 21 extern bool cpu0_calls_idle; 22 23 extern void halt(void); 24 extern void do_idle(void); 25 26 extern cpumask_t cpu_present_mask; 27 extern cpumask_t cpu_online_mask; 28 extern cpumask_t cpu_idle_mask; 29 #define cpu_present(cpu) cpumask_test_cpu(cpu, &cpu_present_mask) 30 #define cpu_online(cpu) cpumask_test_cpu(cpu, &cpu_online_mask) 31 #define cpu_idle(cpu) cpumask_test_cpu(cpu, &cpu_idle_mask) 32 #define for_each_present_cpu(cpu) for_each_cpu(cpu, &cpu_present_mask) 33 #define for_each_online_cpu(cpu) for_each_cpu(cpu, &cpu_online_mask) 34 35 static inline void set_cpu_present(int cpu, bool present) 36 { 37 if (present) 38 cpumask_set_cpu(cpu, &cpu_present_mask); 39 else 40 cpumask_clear_cpu(cpu, &cpu_present_mask); 41 } 42 43 static inline void set_cpu_online(int cpu, bool online) 44 { 45 if (online) 46 cpumask_set_cpu(cpu, &cpu_online_mask); 47 else 48 cpumask_clear_cpu(cpu, &cpu_online_mask); 49 } 50 51 static inline void set_cpu_idle(int cpu, bool idle) 52 { 53 if (idle) 54 cpumask_set_cpu(cpu, &cpu_idle_mask); 55 else 56 cpumask_clear_cpu(cpu, &cpu_idle_mask); 57 } 58 59 extern void smp_boot_secondary(int cpu, secondary_entry_fn entry); 60 extern void on_cpu_async(int cpu, void (*func)(void *data), void *data); 61 extern void on_cpu(int cpu, void (*func)(void *data), void *data); 62 extern void on_cpus(void (*func)(void *data), void *data); 63 64 #endif /* _ASMARM_SMP_H_ */ 65