Messages in this thread | | | From | Thomas Gleixner <> | Subject | Re: [PATCH RFC] x86/entry: Ask RCU if it needs rcu_irq_{enter,exit}() | Date | Fri, 12 Jun 2020 11:27:21 +0200 |
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"Paul E. McKenney" <paulmck@kernel.org> writes: > +static __always_inline bool rcu_needs_irq_enter(void) > +{ > + return !IS_ENABLED(CONFIG_TINY_RCU) && > + (context_tracking_enabled_cpu(smp_processor_id()) || is_idle_task(current));
This reintroduces the #PF problem which started the whole conditional RCU entry discussion:
https://lore.kernel.org/lkml/20200515235125.628629605@linutronix.de/
and which made us all come to the conclusion that we can do it always conditional. No biscuit for you. :)
Thanks,
tglx
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