On Thu, Nov 08, 2018 at 04:52:26PM +0100, Sebastian Andrzej Siewior wrote: > On 2018-11-01 16:02:35 [-0700], Paul E. McKenney wrote: > > > The forcing of an expedited grace period is an expensive and very > > > RT-application unfriendly operation, as it forcibly preempts all running > > > tasks on CPUs which are preventing the gp from expiring. > > > > > > By default, as a policy decision, disable the expediting of grace > > > periods (after boot) on configurations which enable PREEMPT_RT_FULL. > > > > > > Suggested-by: Luiz Capitulino <lcapitulino@xxxxxxxxxx> > > > Signed-off-by: Julia Cartwright <julia@xxxxxx> > > > Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx> > > > > In case it matters: > > > > Acked-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxx> > > > > Alternatively, any reason that I should not pull this into -rcu? > because we don't have CONFIG_PREEMPT_RT_FULL yet. Fair enough. This particular case works without CONFIG_PREEMPT_RT_FULL defined, but up to you guys. Thanx, Paul
