1. 根目录:
2. arch
3. x86
4. include
5. asm
6. cmdline.h

#ifndef _ASM_X86_CMDLINE_H
#define _ASM_X86_CMDLINE_H

int cmdline_find_option_bool(const char *cmdline_ptr, const char *option);

#endif /* _ASM_X86_CMDLINE_H */