Current宏 DECLARE PER CPU(struct task struct * current tasl static_ always_ _inline struct task_structget current(void) return x86_read_percpu(current_task #define current get_ current Current_ 32. h(include \asm-86): DECLARE_ PER_ CPU(struct task_ struct * current_task); Current_32. h(include\asm-86: return x86_read_percpu(current_task Process_32. c(arch\x86 \kernel): DEFINE_ PER_CPU(struct task_struct * current_task)=&init_task Process_32c(arch\x86 kernel): EXPORT_PER_CPU_ SYMBOL(current_task Smpc(arch\ x86\xen): per- cpu(current _task, cpu)=idle. t_task, next_p) Process_32.c(arch\x86\kernel): 86_write_percpu(currer Smpboot. c(arch\x86 kernel: per_cpu(current_task, cpu)=c_idle idle Voyager_smp.c(arch\x86\mach-voyager: per__cpu(current_task, cpu)=idle L 2021/2/6 Linux操作系统分析 23/65 嵌入式系统实验室 EM日 EDDED SYSTEM LA日口 RATORY2021/2/6 Linux操作系统分析 23/65 Current宏