On Tue, Mar 19, 2019 at 05:24:31PM +0100, Sebastian Andrzej Siewior wrote: > On 2019-03-19 08:59:23 [-0700], Paul E. McKenney wrote: > > I doubt that there is any code left from my original, so I set you as > > author. > > I always forward ported it the patch over the years. So if it is no > longer what it was once so be it.
Besides, it looks very weird for me to have two Signed-off-by lines. ;-) > > I queued this and am starting tests without setting rcunosoftirq, > > and will run more later setting it, courtesy of --bootargs. > > oki. > > > Steve Rostedt did raise a good question about adding event tracing to > > the park functions. I haven't really settled on an answer yet. Thoughts? > > It should trigger CPU hotplug events. If there was something similar for > the softirq processing then the threaded processing should also have it. > Please tell me which one should be added and I'm happy to add one. In theory, the trace_rcu_utilization() should be added, just like at the beginning and end of the function rcu_core(), but as far as I know, no one uses that, so I actually have it on my list to remove. Thanx, Paul