Re: [PATCH tip/core/rcu 1/2] rcu: Parallelize and economize NOCB kthread wakeups

[Pranith Kumar]

On Sat, Aug 23, 2014 at 12:51 PM, Paul E. McKenney
<paulmck@xxxxxxxxxxxxxxxxxx> wrote:

> It might well!  Another possibility is that the early_initcall function
> doing the synchronize_rcu() is happening before the early_initcall
> creating the RCU grace-period kthreads.
>
> Seems like we need to close both holes.  Let's see how your patch works
> for Amit, and I am testing a patch for the possible early_initcall
> ordering issue.

I checked the init call which is calling synchronize_rcu():
subsys_initcall(pm_sysrq_init); this is being called after
early_initcall.

The order of initcalls is early, core, postcore, arch, subsys, fs,
device, late. So I guess that is ok.

I wonder why it was not showing up in 12.04. I have a dual boot. Will
test it out and see if I can find something.

-- 
Pranith
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