On Tue, Apr 11, 2017 at 06:56:01PM -0400, Steven Rostedt wrote: > On Tue, 11 Apr 2017 18:54:35 -0400 > Steven Rostedt <[email protected]> wrote: > > > From: "Steven Rostedt (VMware)" <[email protected]> > > > > The trace_event benchmark thread runs in kernel space in an infinite loop > > while also calling cond_resched() in case anything else wants to schedule > > in. Unfortunately, on a PREEMPT kernel, that makes it a nop, in which case, > > this will never voluntarily schedule. That will cause > > synchronize_rcu_tasks() > > to forever block on this thread, while it is running. > > > > This is exactly what cond_resched_rcu_qs() is for. Use that instead. > > > > Cc: "Paul E. McKenney" <[email protected]> > > This actually should be: > > Recommended-by: "Paul E. McKenney" <[email protected]>
And: Acked-by: "Paul E. McKenney" <[email protected]> > -- Steve > > > Signed-off-by: Steven Rostedt (VMware) <[email protected]> > > --- >
