stack_t           429 include/linux/signal.h int restore_altstack(const stack_t __user *);
stack_t           430 include/linux/signal.h int __save_altstack(stack_t __user *, unsigned long);
stack_t           433 include/linux/signal.h 	stack_t __user *__uss = uss; \
stack_t             7 include/uapi/asm-generic/ucontext.h 	stack_t		  uc_stack;