+ * can access PMU is task is the owner of the PMU state on the current CPU
+ * or if we are running on the CPU bound to the context in system-wide mode
+ * (that is not necessarily the task the context is attached to in this mode).
+ * In system-wide we always have can_access_pmu true because a task running on an
+ * invalid processor is flagged earlier in the call stack (see pfm_stop).