rcu: Add long-term CPU kicking
Commit d2db185bfee8 ("rcu: Remove short-term CPU kicking") removed
frequent calls to resched_cpu(), which means that the only time
resched_cpu() is invoked is after an RCU CPU stall warning. Although
this is good from an avoid-IPIs perspective, we should try to break
things loose -before- splatting. This commit therefore starts invoking
resched_cpu() for each holdout at each force-quiescent-state interval
that is more than halfway through the stall-warning interval.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
1 file changed
