Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annotations

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From: Paul E. McKenney

Subject: Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annotations

Date: Thursday, May 13, 2010 - 8:23 am

On Thu, May 13, 2010 at 03:07:23PM +0200, Peter Zijlstra wrote:
quoted text> On Wed, 2010-05-12 at 16:00 -0700, Paul E. McKenney wrote:
> > Any thoughts?  One approach would be to create a separate lockdep class
> > for vhost workqueue state, similar to the approach used in instrument
> > rcu_read_lock() and friends. 
> 
> workqueue_struct::lockdep_map, its held while executing worklets.
> 
> lock_is_held(&vhost_workqueue->lockdep_map), should do as you want.

Thank you, Peter!!!

							Thanx, Paul
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Messages in current thread:

[PATCH tip/core/rcu 0/23] infrastructure for sparse checks ..., Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 01/23] rcu: add an rcu_dereference ..., Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 02/23] rcu: add __rcu API for late ..., Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 03/23] vfs: add fs.h to define str ..., Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 04/23] net: Make accesses to ->br_ ..., Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 05/23] mce: convert to rcu_derefer ..., Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 06/23] rcu: define __rcu address s ..., Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 07/23] rculist: avoid __rcu annota ..., Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 08/23] cgroups: __rcu annotations, Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 09/23] credentials: rcu annotation, Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 10/23] keys: __rcu annotations, Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 11/23] nfs: __rcu annotations, Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 12/23] net: __rcu annotations for ..., Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 13/23] perf_event: __rcu annotations, Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 14/23] notifiers: __rcu annotations, Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 15/23] radix-tree: __rcu annotations, Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 16/23] idr: __rcu annotations, Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 17/23] input: __rcu annotations, Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 18/23] net/netfilter: __rcu annota ..., Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 19/23] kvm: add __rcu annotations, Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 20/23] kernel: __rcu annotations, Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 21/23] net: __rcu annotations, Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 22/23] kvm: more __rcu annotations, Paul E. McKenney, (Wed May 12, 2:33 pm)

[PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annotations, Paul E. McKenney, (Wed May 12, 2:33 pm)

Re: [PATCH RFC tip/core/rcu 04/23] net: Make accesses to - ..., Stephen Hemminger, (Wed May 12, 2:44 pm)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Michael S. Tsirkin, (Wed May 12, 2:48 pm)

Re: [PATCH RFC tip/core/rcu 04/23] net: Make accesses to - ..., Paul E. McKenney, (Wed May 12, 3:35 pm)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Paul E. McKenney, (Wed May 12, 4:00 pm)

Re: [PATCH RFC tip/core/rcu 04/23] net: Make accesses to - ..., Stephen Hemminger, (Wed May 12, 6:33 pm)

Re: [PATCH RFC tip/core/rcu 04/23] net: Make accesses to - ..., Paul E. McKenney, (Wed May 12, 7:00 pm)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Michael S. Tsirkin, (Wed May 12, 8:53 pm)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Paul E. McKenney, (Wed May 12, 9:49 pm)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Michael S. Tsirkin, (Wed May 12, 9:50 pm)

Re: [PATCH RFC tip/core/rcu 17/23] input: __rcu annotations, Dmitry Torokhov, (Thu May 13, 12:40 am)

Re: [PATCH RFC tip/core/rcu 09/23] credentials: rcu annotation, David Howells, (Thu May 13, 3:04 am)

Re: [PATCH RFC tip/core/rcu 10/23] keys: __rcu annotations, David Howells, (Thu May 13, 3:05 am)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Peter Zijlstra, (Thu May 13, 6:07 am)

Re: [PATCH RFC tip/core/rcu 18/23] net/netfilter: __rcu an ..., Patrick McHardy, (Thu May 13, 6:21 am)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Paul E. McKenney, (Thu May 13, 8:23 am)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Paul E. McKenney, (Thu May 13, 12:55 pm)

Re: [PATCH RFC tip/core/rcu 02/23] rcu: add __rcu API for ..., Matt Helsley, (Thu May 13, 1:53 pm)

Re: [PATCH RFC tip/core/rcu 02/23] rcu: add __rcu API for ..., Paul E. McKenney, (Thu May 13, 2:48 pm)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Michael S. Tsirkin, (Mon May 17, 1:33 pm)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Paul E. McKenney, (Mon May 17, 2:06 pm)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Mathieu Desnoyers, (Mon May 17, 3:00 pm)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Paul E. McKenney, (Mon May 17, 4:05 pm)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Michael S. Tsirkin, (Mon May 17, 4:08 pm)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Mathieu Desnoyers, (Mon May 17, 4:40 pm)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Paul E. McKenney, (Mon May 17, 5:34 pm)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Mathieu Desnoyers, (Mon May 17, 6:35 pm)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Paul E. McKenney, (Tue May 18, 7:20 am)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Michael S. Tsirkin, (Tue May 18, 7:25 am)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Mathieu Desnoyers, (Tue May 18, 7:47 am)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Paul E. McKenney, (Tue May 18, 8:07 am)

Re: [PATCH RFC tip/core/rcu 23/23] vhost: add __rcu annota ..., Paul E. McKenney, (Tue May 18, 8:11 am)