arch_enter_from_user_mode
#define arch_enter_from_user_mode arch_enter_from_user_mode
#define arch_enter_from_user_mode arch_enter_from_user_mode
static __always_inline void arch_enter_from_user_mode(struct pt_regs *regs);
#ifndef arch_enter_from_user_mode
arch_enter_from_user_mode(regs);