perf_arch_instruction_pointer
extern unsigned long perf_arch_instruction_pointer(struct pt_regs *regs);
perf_callchain_store(entry, perf_arch_instruction_pointer(regs));
perf_callchain_store(entry, perf_arch_instruction_pointer(regs));
next_ip = perf_arch_instruction_pointer(regs);
next_ip = perf_arch_instruction_pointer(regs);
extern unsigned long perf_arch_instruction_pointer(struct pt_regs *regs);
extern unsigned long perf_arch_instruction_pointer(struct pt_regs *regs);
return perf_arch_instruction_pointer(regs);