ftrace_old_addr 2364 kernel/trace/ftrace.c unsigned long ftrace_old_addr; ftrace_old_addr 2371 kernel/trace/ftrace.c ftrace_old_addr = ftrace_get_addr_curr(rec); ftrace_old_addr 2387 kernel/trace/ftrace.c return ftrace_make_nop(NULL, rec, ftrace_old_addr); ftrace_old_addr 2391 kernel/trace/ftrace.c return ftrace_modify_call(rec, ftrace_old_addr, ftrace_addr);