MAX_LOCKDEP_KEYS_BITS 223 include/linux/lockdep.h #define MAX_LOCKDEP_KEYS (1UL << MAX_LOCKDEP_KEYS_BITS) MAX_LOCKDEP_KEYS_BITS 254 include/linux/lockdep.h unsigned int class_idx:MAX_LOCKDEP_KEYS_BITS; MAX_LOCKDEP_KEYS_BITS 146 kernel/locking/lockdep.c #define KEYHASH_BITS (MAX_LOCKDEP_KEYS_BITS - 1) MAX_LOCKDEP_KEYS_BITS 340 kernel/locking/lockdep.c #define CLASSHASH_BITS (MAX_LOCKDEP_KEYS_BITS - 1)