203 	int cpu;  in touch_all_softlockup_watchdogs()  local
210 	for_each_online_cpu(cpu)  in touch_all_softlockup_watchdogs()
211 		per_cpu(watchdog_touch_ts, cpu) = 0;  in touch_all_softlockup_watchdogs()
320 static int watchdog_nmi_enable(unsigned int cpu);
321 static void watchdog_nmi_disable(unsigned int cpu);
440 static void watchdog_enable(unsigned int cpu)  in watchdog_enable()  argument
449 	watchdog_nmi_enable(cpu);  in watchdog_enable()
460 static void watchdog_disable(unsigned int cpu)  in watchdog_disable()  argument
467 	watchdog_nmi_disable(cpu);  in watchdog_disable()
470 static void watchdog_cleanup(unsigned int cpu, bool online)  in watchdog_cleanup()  argument
472 	watchdog_disable(cpu);  in watchdog_cleanup()
475 static int watchdog_should_run(unsigned int cpu)  in watchdog_should_run()  argument
489 static void watchdog(unsigned int cpu)  in watchdog()  argument
508 		watchdog_nmi_disable(cpu);  in watchdog()
519 static int watchdog_nmi_enable(unsigned int cpu)  in watchdog_nmi_enable()  argument
522 	struct perf_event *event = per_cpu(watchdog_ev, cpu);  in watchdog_nmi_enable()
540 	event = perf_event_create_kernel_counter(wd_attr, cpu, NULL, watchdog_overflow_callback, NULL);  in watchdog_nmi_enable()
543 	if (cpu == 0 && IS_ERR(event))  in watchdog_nmi_enable()
548 		if (cpu == 0 || cpu0_err)  in watchdog_nmi_enable()
566 	if (cpu > 0 && (PTR_ERR(event) == cpu0_err))  in watchdog_nmi_enable()
571 		pr_info("disabled (cpu%i): not supported (no LAPIC?)\n", cpu);  in watchdog_nmi_enable()
574 			 cpu);  in watchdog_nmi_enable()
577 			cpu, PTR_ERR(event));  in watchdog_nmi_enable()
585 	per_cpu(watchdog_ev, cpu) = event;  in watchdog_nmi_enable()
587 	perf_event_enable(per_cpu(watchdog_ev, cpu));  in watchdog_nmi_enable()
592 static void watchdog_nmi_disable(unsigned int cpu)  in watchdog_nmi_disable()  argument
594 	struct perf_event *event = per_cpu(watchdog_ev, cpu);  in watchdog_nmi_disable()
598 		per_cpu(watchdog_ev, cpu) = NULL;  in watchdog_nmi_disable()
603 	if (cpu == 0) {  in watchdog_nmi_disable()
611 	int cpu;  in watchdog_nmi_enable_all()  local
619 	for_each_online_cpu(cpu)  in watchdog_nmi_enable_all()
620 		watchdog_nmi_enable(cpu);  in watchdog_nmi_enable_all()
629 	int cpu;  in watchdog_nmi_disable_all()  local
637 	for_each_online_cpu(cpu)  in watchdog_nmi_disable_all()
638 		watchdog_nmi_disable(cpu);  in watchdog_nmi_disable_all()
645 static int watchdog_nmi_enable(unsigned int cpu) { return 0; }  in watchdog_nmi_enable()  argument
646 static void watchdog_nmi_disable(unsigned int cpu) { return; }  in watchdog_nmi_disable()  argument
679 static void update_watchdog(int cpu)  in update_watchdog()  argument
689 	watchdog_nmi_disable(cpu);  in update_watchdog()
690 	smp_call_function_single(cpu, restart_watchdog_hrtimer, NULL, 1);  in update_watchdog()
691 	watchdog_nmi_enable(cpu);  in update_watchdog()
696 	int cpu;  in update_watchdog_all_cpus()  local
699 	for_each_online_cpu(cpu)  in update_watchdog_all_cpus()
700 		update_watchdog(cpu);  in update_watchdog_all_cpus()