ftrace_update_record 535 arch/x86/kernel/ftrace.c ret = ftrace_update_record(rec, enable); ftrace_update_record 430 include/linux/ftrace.h int ftrace_update_record(struct dyn_ftrace *rec, bool enable); ftrace_update_record 2373 kernel/trace/ftrace.c ret = ftrace_update_record(rec, enable);