[PATCH v2 39/52] clocksource, dummy-timer: Fix CPU hotplug callback registration

Subsystems that want to register CPU hotplug callbacks, as well as perform initialization for the CPUs that are already online, often do it as shown below: get_online_cpus(); for_each_online_cpu(cpu) init_cpu(cpu); register_cpu_notifier(_cpu_notifier);

[PATCH v2 39/52] clocksource, dummy-timer: Fix CPU hotplug callback registration

Subsystems that want to register CPU hotplug callbacks, as well as perform initialization for the CPUs that are already online, often do it as shown below: get_online_cpus(); for_each_online_cpu(cpu) init_cpu(cpu);