linux-master/kernel/cpu.c

2689 int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval)
2701 		if (ctrlval == CPU_SMT_ENABLED && cpu_smt_thread_allowed(cpu))
2722 		cpu_smt_control = ctrlval;
2928 	int ctrlval, ret, num_threads, orig_threads;
2938 		ctrlval = CPU_SMT_ENABLED;
2941 		ctrlval = CPU_SMT_DISABLED;
2944 		ctrlval = CPU_SMT_FORCE_DISABLED;
2948 			ctrlval = CPU_SMT_DISABLED;
2950 			ctrlval = CPU_SMT_ENABLED;
2964 	force_off = ctrlval != cpu_smt_control && ctrlval == CPU_SMT_FORCE_DISABLED;
2969 		ret = cpuhp_smt_disable(ctrlval);