On Fri, Sep 19, 2014 at 12:55:11AM +0200, Rafael J. Wysocki wrote:
> On Thursday, September 18, 2014 05:38:45 AM Paul E. McKenney wrote:
> > On Thu, Sep 18, 2014 at 03:15:36PM +0800, Lan Tianyu wrote:
> > > On 2014年09月17日 21:10, Paul E. McKenney wrote:
> > > > On Wed, Sep 17, 2014 at 03:11:42PM
On Thursday, September 18, 2014 05:38:45 AM Paul E. McKenney wrote:
> On Thu, Sep 18, 2014 at 03:15:36PM +0800, Lan Tianyu wrote:
> > On 2014年09月17日 21:10, Paul E. McKenney wrote:
> > > On Wed, Sep 17, 2014 at 03:11:42PM +0800, Lan Tianyu wrote:
> > >> On 2014年08月29日 03:47, Paul E. McKenney wrote:
On Thu, Sep 18, 2014 at 03:15:36PM +0800, Lan Tianyu wrote:
> On 2014年09月17日 21:10, Paul E. McKenney wrote:
> > On Wed, Sep 17, 2014 at 03:11:42PM +0800, Lan Tianyu wrote:
> >> On 2014年08月29日 03:47, Paul E. McKenney wrote:
> >>> Currently, the expedited grace-period primitives do
On 2014年09月17日 21:10, Paul E. McKenney wrote:
> On Wed, Sep 17, 2014 at 03:11:42PM +0800, Lan Tianyu wrote:
>> On 2014年08月29日 03:47, Paul E. McKenney wrote:
>>> Currently, the expedited grace-period primitives do get_online_cpus().
>>> This greatly simplifies their implementation, but means that
On Thursday, September 18, 2014 05:38:45 AM Paul E. McKenney wrote:
On Thu, Sep 18, 2014 at 03:15:36PM +0800, Lan Tianyu wrote:
On 2014年09月17日 21:10, Paul E. McKenney wrote:
On Wed, Sep 17, 2014 at 03:11:42PM +0800, Lan Tianyu wrote:
On 2014年08月29日 03:47, Paul E. McKenney wrote:
On Fri, Sep 19, 2014 at 12:55:11AM +0200, Rafael J. Wysocki wrote:
On Thursday, September 18, 2014 05:38:45 AM Paul E. McKenney wrote:
On Thu, Sep 18, 2014 at 03:15:36PM +0800, Lan Tianyu wrote:
On 2014年09月17日 21:10, Paul E. McKenney wrote:
On Wed, Sep 17, 2014 at 03:11:42PM +0800, Lan
On 2014年09月17日 21:10, Paul E. McKenney wrote:
On Wed, Sep 17, 2014 at 03:11:42PM +0800, Lan Tianyu wrote:
On 2014年08月29日 03:47, Paul E. McKenney wrote:
Currently, the expedited grace-period primitives do get_online_cpus().
This greatly simplifies their implementation, but means that calls to
On Thu, Sep 18, 2014 at 03:15:36PM +0800, Lan Tianyu wrote:
On 2014年09月17日 21:10, Paul E. McKenney wrote:
On Wed, Sep 17, 2014 at 03:11:42PM +0800, Lan Tianyu wrote:
On 2014年08月29日 03:47, Paul E. McKenney wrote:
Currently, the expedited grace-period primitives do get_online_cpus().
This
On Wed, Sep 17, 2014 at 03:11:42PM +0800, Lan Tianyu wrote:
> On 2014年08月29日 03:47, Paul E. McKenney wrote:
> > Currently, the expedited grace-period primitives do get_online_cpus().
> > This greatly simplifies their implementation, but means that calls to
> > them holding locks that are acquired
On 2014年08月29日 03:47, Paul E. McKenney wrote:
> Currently, the expedited grace-period primitives do get_online_cpus().
> This greatly simplifies their implementation, but means that calls to
> them holding locks that are acquired by CPU-hotplug notifiers (to say
> nothing of calls to these
On 2014年08月29日 03:47, Paul E. McKenney wrote:
Currently, the expedited grace-period primitives do get_online_cpus().
This greatly simplifies their implementation, but means that calls to
them holding locks that are acquired by CPU-hotplug notifiers (to say
nothing of calls to these primitives
On Wed, Sep 17, 2014 at 03:11:42PM +0800, Lan Tianyu wrote:
On 2014年08月29日 03:47, Paul E. McKenney wrote:
Currently, the expedited grace-period primitives do get_online_cpus().
This greatly simplifies their implementation, but means that calls to
them holding locks that are acquired by
On Wed, Sep 03, 2014 at 05:28:50PM +0200, Peter Zijlstra wrote:
> On Wed, Sep 03, 2014 at 08:03:06AM -0700, Paul E. McKenney wrote:
> > > > Normal RCU grace periods avoid this by synchronizing on a lock acquired
> > > > by
> > > > the RCU CPU-hotplug notifiers, but this does not work for the
On Wed, Sep 03, 2014 at 08:03:06AM -0700, Paul E. McKenney wrote:
> > > Normal RCU grace periods avoid this by synchronizing on a lock acquired by
> > > the RCU CPU-hotplug notifiers, but this does not work for the expedited
> > > grace periods because the outgoing CPU can be running random tasks
On Wed, Sep 03, 2014 at 01:31:12PM +0200, Peter Zijlstra wrote:
> On Tue, Sep 02, 2014 at 09:36:56AM -0700, Paul E. McKenney wrote:
> > On Mon, Sep 01, 2014 at 06:17:35PM +0200, Peter Zijlstra wrote:
> > > On Mon, Sep 01, 2014 at 09:05:50AM -0700, Paul E. McKenney wrote:
> > > > > URGH.. I really
On Tue, Sep 02, 2014 at 09:36:56AM -0700, Paul E. McKenney wrote:
> On Mon, Sep 01, 2014 at 06:17:35PM +0200, Peter Zijlstra wrote:
> > On Mon, Sep 01, 2014 at 09:05:50AM -0700, Paul E. McKenney wrote:
> > > > URGH.. I really hate that. The hotplug interface is already too
> > > > horrible, we
On Tue, Sep 02, 2014 at 09:36:56AM -0700, Paul E. McKenney wrote:
On Mon, Sep 01, 2014 at 06:17:35PM +0200, Peter Zijlstra wrote:
On Mon, Sep 01, 2014 at 09:05:50AM -0700, Paul E. McKenney wrote:
URGH.. I really hate that. The hotplug interface is already too
horrible, we should not add
On Wed, Sep 03, 2014 at 01:31:12PM +0200, Peter Zijlstra wrote:
On Tue, Sep 02, 2014 at 09:36:56AM -0700, Paul E. McKenney wrote:
On Mon, Sep 01, 2014 at 06:17:35PM +0200, Peter Zijlstra wrote:
On Mon, Sep 01, 2014 at 09:05:50AM -0700, Paul E. McKenney wrote:
URGH.. I really hate that.
On Wed, Sep 03, 2014 at 08:03:06AM -0700, Paul E. McKenney wrote:
Normal RCU grace periods avoid this by synchronizing on a lock acquired by
the RCU CPU-hotplug notifiers, but this does not work for the expedited
grace periods because the outgoing CPU can be running random tasks for
On Wed, Sep 03, 2014 at 05:28:50PM +0200, Peter Zijlstra wrote:
On Wed, Sep 03, 2014 at 08:03:06AM -0700, Paul E. McKenney wrote:
Normal RCU grace periods avoid this by synchronizing on a lock acquired
by
the RCU CPU-hotplug notifiers, but this does not work for the expedited
On Mon, Sep 01, 2014 at 06:17:35PM +0200, Peter Zijlstra wrote:
> On Mon, Sep 01, 2014 at 09:05:50AM -0700, Paul E. McKenney wrote:
> > > URGH.. I really hate that. The hotplug interface is already too
> > > horrible, we should not add such hacks to it.
> >
> > We do have try_ interfaces to a
On Mon, Sep 01, 2014 at 06:17:35PM +0200, Peter Zijlstra wrote:
On Mon, Sep 01, 2014 at 09:05:50AM -0700, Paul E. McKenney wrote:
URGH.. I really hate that. The hotplug interface is already too
horrible, we should not add such hacks to it.
We do have try_ interfaces to a number of
On Mon, Sep 01, 2014 at 09:05:50AM -0700, Paul E. McKenney wrote:
> > URGH.. I really hate that. The hotplug interface is already too
> > horrible, we should not add such hacks to it.
>
> We do have try_ interfaces to a number of other subsystems, so I don't
> believe that it qualifies as such a
On Mon, Sep 01, 2014 at 01:20:59PM +0200, Peter Zijlstra wrote:
> On Thu, Aug 28, 2014 at 12:47:45PM -0700, Paul E. McKenney wrote:
> > Currently, the expedited grace-period primitives do get_online_cpus().
> > This greatly simplifies their implementation, but means that calls to
> > them holding
On Thu, Aug 28, 2014 at 12:47:45PM -0700, Paul E. McKenney wrote:
> Currently, the expedited grace-period primitives do get_online_cpus().
> This greatly simplifies their implementation, but means that calls to
> them holding locks that are acquired by CPU-hotplug notifiers (to say
> nothing of
On Thu, Aug 28, 2014 at 12:47:45PM -0700, Paul E. McKenney wrote:
Currently, the expedited grace-period primitives do get_online_cpus().
This greatly simplifies their implementation, but means that calls to
them holding locks that are acquired by CPU-hotplug notifiers (to say
nothing of calls
On Mon, Sep 01, 2014 at 01:20:59PM +0200, Peter Zijlstra wrote:
On Thu, Aug 28, 2014 at 12:47:45PM -0700, Paul E. McKenney wrote:
Currently, the expedited grace-period primitives do get_online_cpus().
This greatly simplifies their implementation, but means that calls to
them holding locks
On Mon, Sep 01, 2014 at 09:05:50AM -0700, Paul E. McKenney wrote:
URGH.. I really hate that. The hotplug interface is already too
horrible, we should not add such hacks to it.
We do have try_ interfaces to a number of other subsystems, so I don't
believe that it qualifies as such a hack.
On Fri, Aug 29, 2014 at 02:54:54PM +0800, Lan Tianyu wrote:
> On 2014年08月29日 03:47, Paul E. McKenney wrote:
> > Currently, the expedited grace-period primitives do get_online_cpus().
> > This greatly simplifies their implementation, but means that calls to
> > them holding locks that are acquired
On 2014年08月29日 03:47, Paul E. McKenney wrote:
> Currently, the expedited grace-period primitives do get_online_cpus().
> This greatly simplifies their implementation, but means that calls to
> them holding locks that are acquired by CPU-hotplug notifiers (to say
> nothing of calls to these
On 2014年08月29日 03:47, Paul E. McKenney wrote:
Currently, the expedited grace-period primitives do get_online_cpus().
This greatly simplifies their implementation, but means that calls to
them holding locks that are acquired by CPU-hotplug notifiers (to say
nothing of calls to these primitives
On Fri, Aug 29, 2014 at 02:54:54PM +0800, Lan Tianyu wrote:
On 2014年08月29日 03:47, Paul E. McKenney wrote:
Currently, the expedited grace-period primitives do get_online_cpus().
This greatly simplifies their implementation, but means that calls to
them holding locks that are acquired by
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