MAX_LOCK_DEPTH    983 include/linux/sched.h # define MAX_LOCK_DEPTH			48UL
MAX_LOCK_DEPTH     19 tools/include/linux/lockdep.h #define MAX_LOCK_DEPTH 63UL
MAX_LOCK_DEPTH     95 tools/perf/builtin-lock.c #define MAX_LOCK_DEPTH 48