107 struct func_instance {  struct
120 	struct func_instance *instances[MAX_CALL_FRAMES]; /* valid in range [0..curframe] */  argument
129 	struct func_instance *cur_instance;
177 static struct func_instance *__lookup_instance(struct bpf_verifier_env *env,  in __lookup_instance()
182 	struct func_instance *result;  in __lookup_instance()
192 	size = sizeof(struct func_instance);  in __lookup_instance()
208 static struct func_instance *lookup_instance(struct bpf_verifier_env *env,  in lookup_instance()
229 	struct func_instance *instance;  in bpf_stack_liveness_free()
248 static int relative_idx(struct func_instance *instance, u32 insn_idx)  in relative_idx()
253 static struct per_frame_masks *get_frame_masks(struct func_instance *instance,  in get_frame_masks()
263 						 struct func_instance *instance,  in alloc_frame_masks()
287 	struct func_instance *instance;  in ensure_cur_instance()
302 			   struct func_instance *instance, u32 frame, u32 insn_idx, u64 mask)  in mark_stack_read()
328 				    struct func_instance *instance, u32 insn_idx)  in reset_stack_write_marks()
357 				    struct func_instance *instance)  in commit_stack_write_marks()
510 static struct func_instance *get_outer_instance(struct bpf_verifier_env *env,  in get_outer_instance()
511 						struct func_instance *instance)  in get_outer_instance()
533 				       struct func_instance *instance)  in propagate_to_outer_instance()
537 	struct func_instance *outer_instance;  in propagate_to_outer_instance()
562 			       struct func_instance *instance, u32 frame, u32 insn_idx)  in update_insn()
612 static int update_instance(struct bpf_verifier_env *env, struct func_instance *instance)  in update_instance()
680 	struct func_instance *instance;  in bpf_update_live_stack()
700 static bool is_live_before(struct func_instance *instance, u32 insn_idx, u32 frameno, u32 spi)  in is_live_before()
711 	struct func_instance *instance;  in bpf_live_stack_query_init()
735 	struct func_instance *instance, *curframe_instance;  in bpf_stack_slot_alive()