Re: [PATCH/RFC] synchronize_rcu(): high latency on idle system

2008-01-14 Thread Stephen Hemminger
On Sun, 13 Jan 2008 16:34:17 +0100 Andi Kleen <[EMAIL PROTECTED]> wrote: > > > I think it should be in netdev_unregister_kobject(). But that would > > only get rid of one of the two calls to synchronize_rcu() in the > > unregister_netdev. > > Would be already an improvement. > > > The other s

Re: [PATCH/RFC] synchronize_rcu(): high latency on idle system

2008-01-13 Thread Andi Kleen
> I think it should be in netdev_unregister_kobject(). But that would > only get rid of one of the two calls to synchronize_rcu() in the > unregister_netdev. Would be already an improvement. > The other synchronize_rcu() is for qdisc's and not sure if that one can > be removed? The standard w

Re: [PATCH/RFC] synchronize_rcu(): high latency on idle system

2008-01-12 Thread Stephen Hemminger
On Sat, 12 Jan 2008 19:35:58 +0100 Andi Kleen <[EMAIL PROTECTED]> wrote: > On Saturday 12 January 2008 18:51:35 Benjamin LaHaise wrote: > > On Sat, Jan 12, 2008 at 03:37:59AM +0100, Andi Kleen wrote: > > > > And yes, the > > > > network stack shouldn't call synchronize_rcu() quite so much, but >