13 	u64 key;  member
27 	struct event_key key;  member
40 	key_cmp_fun key;  member
48 			struct event_key *key);
55 			       struct event_key *key);
57 			     struct perf_sample *sample, struct event_key *key);
59 	void (*decode_key)(struct perf_kvm_stat *kvm, struct event_key *key,
112 			struct event_key *key);
115 		      struct event_key *key);
118 		    struct event_key *key);
120 			   struct event_key *key,