Re: [Lse-tech] Re: [Patch 6/6] Delay accounting: Connector interface

[Shailabh Nagar <nagar@watson.ibm.com>]

Greg KH wrote:

> On Wed, Jan 04, 2006 at 12:42:36AM +0000, Shailabh Nagar wrote:
>  
>
> > Greg KH wrote:
> >    
> >
> > > On Tue, Jan 03, 2006 at 11:33:40PM +0000, Shailabh Nagar wrote:
> > >
> > >      
> > >
> > > > Changes since 11/14/05:
> > > >
> > > > - explicit versioning of statistics data returned
> > > > - new command type for returning per-tgid stats
> > > > - for cpu running time, use tsk->sched_info.cpu_time (collected by schedstats)
> > > >
> > > > First post 11/14/05
> > > >
> > > > delayacct-connector.patch
> > > >
> > > > Creates a connector interface for getting delay and cpu statistics of tasks
> > > > during their lifetime and when they exit. The cpu stats are available only if
> > > > CONFIG_SCHEDSTATS is enabled.
> > > >        
> > > Why do you use this when we can send typesafe data through netlink
> > > messages now?  
> > >      
> > AFAIK, adding new netlink types was frowned upon which is one of the reasons why
> > connectors were proposed (besides making it easier to use the netlink interface) ?
> >    
>
> I don't know about the issue of creating new types (have you tried?),
> but there is a new netlink message format that pretty should make it
> just as easy as the connector stuff to send complex message types.
>  

Thanks - just saw the genetlink patches/interface which seems to handle 
the problem of
creating new netlink types as well.

But why do I get the feeling that the delay accounting patches are 
becoming a pawn in deprecating connector usage ? :-)
I'd rather not run off and implement over genetlink (which no one else 
seems to be using right now) unless there's some
consensus that connectors are to be deprecated.

Andrew - any opinions ?

-- Shailabh

> thanks,
>
> greg k-h
>
>
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