Messages in this thread | | | From | Joel Fernandes <> | Subject | Re: [PATCH RFC] rcu/kfree: Do not request RCU when not needed | Date | Wed, 2 Nov 2022 15:51:49 -0400 |
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> On Nov 2, 2022, at 2:32 PM, Paul E. McKenney <paulmck@kernel.org> wrote: > > On Wed, Nov 02, 2022 at 06:30:24PM +0100, Uladzislau Rezki wrote: >>> >>> to wait for a GP. Or if the poll_state_synchronize_rcu(oldstate)) != 0 >>> queue_rcu_work(). >>> >> A small fix. If poll_state_synchronize_rcu(oldstate)) == 0 then >> queue_rcu_work() since a GP is still in progress. > > Both get_state_synchronize_rcu() and poll_state_synchronize_rcu() > may be invoked from interrupt handlers. And from NMI handlers, > for that matter.
Thanks for clarifying. I meant to say cond_synchronize_rcu() cannot be called from interrupt context, but I made that comment before Vlad cooked his patch.
Thanks,
- Joel
> Thanx, Paul
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