CPUHP_AP_PERF_X86_STARTING 1852 arch/x86/events/core.c err = cpuhp_setup_state(CPUHP_AP_PERF_X86_STARTING, CPUHP_AP_PERF_X86_STARTING 1872 arch/x86/events/core.c cpuhp_remove_state(CPUHP_AP_PERF_X86_STARTING);