disable_tracing_selftest
disable_tracing_selftest("running a tracer");
extern void __init disable_tracing_selftest(const char *reason);
disable_tracing_selftest("running boot-time tracing");
disable_tracing_selftest("running event triggers");
disable_tracing_selftest("running event tracing");
disable_tracing_selftest("running kprobe events");
disable_tracing_selftest("recovering from a hang");