Messages in this thread | | | Date | Tue, 18 Oct 2022 08:24:18 -0700 | From | "Paul E. McKenney" <> | Subject | Re: [PATCH v2 rcu 0/8] NMI-safe SRCU reader API |
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On Tue, Oct 18, 2022 at 12:39:40PM +0206, John Ogness wrote: > Hi Paul, > > On 2022-09-29, "Paul E. McKenney" <paulmck@kernel.org> wrote: > > This RFC series provides the second version of an NMI-safe SRCU reader > > API in the guise of srcu_read_lock_nmisafe() and > > srcu_read_unlock_nmisafe(). > > I would like to post a new series for printk that will rely on the > NMI-safe reader API. From the feedback of this series it appears that > the RFC v2 is an acceptable starting point. How should we proceed?
Currently, I have this series on -rcu branch srcunmisafe.2022.10.03a, with Frederic's patches on branch "dev". I will be producing a shiny new branch with your fix and Frederic's debug later today, Pacific Time. With luck, based on v6.1-rc1.
> Will Frederic be sending a patch for the extra safety checks using > srcu_nmi_flags? Are you planning on posting a new version? Should I > include this or another version within my upcoming series?
I will be incorporating these commits from Frederic:
6558b914fc4e ("srcu: Warn when NMI-unsafe API is used in NMI") 5dc788627109 ("srcu: Explain the reason behind the read side critical section on GP start") 54a118fce487 ("srcu: Debug NMI safety even on archs that don't require it")
Are there other patches I should be applying?
> Thanks for all your help on this!
And looking forward to the new improved printk()!
Thanx, Paul
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