Re: [PATCH tip/core/rcu 14/19] rcu: Extend expedited funnel locking to rcu_data structure

From	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH tip/core/rcu 14/19] rcu: Extend expedited funnel locking to rcu_data structure
Date	2015-09-22 17:20 +0200
Message-ID	<qbxwl-DB-5@gated-at.bofh.it> (permalink)
References	(1 earlier) <pNneN-3lN-3@gated-at.bofh.it> <pNnou-3xc-29@gated-at.bofh.it> <qaOpz-3oU-3@gated-at.bofh.it> <qb1mO-4P7-11@gated-at.bofh.it> <qbhrB-2Nh-23@gated-at.bofh.it>
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On Mon, Sep 21, 2015 at 06:04:50PM -0400, Sasha Levin wrote:
> On 09/21/2015 12:12 AM, Paul E. McKenney wrote:
> > Hmmm...  I created rdp->exp_funnel_mutex, but failed to give RCU-sched
> > its own lock class.  Does the following untested patch fix things for you?
> 
> Haven't reproduced yet, but it didn't happen that often before - let's give it
> another day or two of testing?

Fair enough!

I didn't see it in my testing, but later patches eliminate this
locking situation entirely, so I didn't put that much time into it.

							Thanx, Paul

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Re: [PATCH tip/core/rcu 14/19] rcu: Extend expedited funnel locking  to rcu_data structure Sasha Levin <sasha.levin@oracle.com> - 2015-09-20 17:10 +0200
  Re: [PATCH tip/core/rcu 14/19] rcu: Extend expedited funnel locking  to rcu_data structure "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2015-09-21 07:00 +0200
    Re: [PATCH tip/core/rcu 14/19] rcu: Extend expedited funnel locking  to rcu_data structure Sasha Levin <sasha.levin@oracle.com> - 2015-09-22 00:10 +0200
      Re: [PATCH tip/core/rcu 14/19] rcu: Extend expedited funnel locking  to rcu_data structure "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2015-09-22 17:20 +0200

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