Re: [Xen-devel] [PATCH 2/3] xen: RCU: make the period of the idle timer configurable.

>>> On 26.09.17 at 19:48, wrote: > On Tue, 2017-09-26 at 09:14 -0600, Jan Beulich wrote: >> > > > On 15.09.17 at 20:01, wrote: >> > --- a/xen/common/rcupdate.c >> > +++ b/xen/common/rcupdate.c >> > +int ret = 0; >> > + >> > +if (

Re: [Xen-devel] [PATCH 2/3] xen: RCU: make the period of the idle timer configurable.

On Tue, 2017-09-26 at 09:14 -0600, Jan Beulich wrote: > > > > On 15.09.17 at 20:01, wrote: > > --- a/xen/common/rcupdate.c > > +++ b/xen/common/rcupdate.c > > +int ret = 0; > > + > > +if ( MILLISECS(period) > IDLE_TIMER_PERIOD_MAX ) > > +{ > > +

Re: [Xen-devel] [PATCH 2/3] xen: RCU: make the period of the idle timer configurable.

>>> On 15.09.17 at 20:01, wrote: > --- a/xen/common/rcupdate.c > +++ b/xen/common/rcupdate.c > @@ -110,10 +110,35 @@ struct rcu_data { > * About how far in the future the timer should be programmed each time, > * it's hard to tell (guess!!). Since this mimics

[Xen-devel] [PATCH 2/3] xen: RCU: make the period of the idle timer configurable.

Make it possible for the user to specify, with the boot time parameter rcu_idle_timer_period_ms, how frequently a CPU that went idle with pending RCU callbacks should be woken up to check if the grace period ended. Typical values (i.e., some of the values used by Linux as the tick frequency) are