On Thu, 16 Apr 2020 14:59:34 -0400 Joel Fernandes <joel@xxxxxxxxxxxxxxxxx> wrote: > But, then will it be safe for kfree_rcu() callers from hard IRQ context to > call this in PREEMPT_RT? That could would just break then as you cannot sleep > in hard IRQ context even on PREEMPT_RT. But where in PREEMPT_RT would it be called in hard IRQ context? Note, most interrupt handlers in PREEMPT_RT are turned into threads (except for a very few, which shouldn't be calling kfree_rcu()). -- Steve
