Messages in this thread | | | Date | Fri, 8 Aug 2014 12:49:31 -0400 | From | Steven Rostedt <> | Subject | Re: [PATCH v3 tip/core/rcu 3/9] rcu: Add synchronous grace-period waiting for RCU-tasks |
| |
On Fri, 8 Aug 2014 09:39:05 -0700 "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> wrote:
> Unless this is done in idle, at which point RCU-sched is studiously > ignoring any preempt_disable() sections.
ftrace doesn't use synchronize_sched() today because of this. It instead just does a "schedule_on_each_cpu()" and waits for that to return before going further.
-- Steve
| |