Messages in this thread | | | Date | Sat, 23 Aug 2014 20:23:39 -0700 | From | "Paul E. McKenney" <> | Subject | Re: [PATCH tip/core/rcu 1/2] rcu: Parallelize and economize NOCB kthread wakeups |
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On Sat, Aug 23, 2014 at 08:26:10PM -0400, Pranith Kumar wrote: > On Sat, Aug 23, 2014 at 12:51 PM, Paul E. McKenney > <paulmck@linux.vnet.ibm.com> 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.
Me, I am wondering about 7,000 callbacks being registered during early boot time. ;-)
Thanx, Paul
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