On Tue, 15 Jun 2021 11:28:51 +0200 Daniel Bristot de Oliveira <bristot@xxxxxxxxxx> wrote: > @@ -1566,7 +1627,14 @@ osnoise_cpus_write(struct file *filp, const char __user *ubuf, size_t count, > osnoise_tracer_stop(tr); > > mutex_lock(&interface_lock); > + /* > + * osnoise_cpumask is ready by CPU hotplug operations. I don't understand the usage of "ready" above. Lost in translation? * osnoise_cpumask is updated by CPU hotplug operations. ? -- Steve > + */ > + get_online_cpus(); > + > cpumask_copy(&osnoise_cpumask, osnoise_cpumask_new); > + > + put_online_cpus(); > mutex_unlock(&interface_lock); >