Re: [PATCH v8 3/6] rcu/trace: Add tracing for how segcb list changes

2020-11-04 Thread Paul E. McKenney
On Tue, Nov 03, 2020 at 08:47:21AM -0500, Joel Fernandes wrote: [ . . . ] > ---8<--- > > From: "Joel Fernandes (Google)" > Subject: [PATCH] rcu/trace: Add tracing for how segcb list changes > > Track how the segcb list changes before/after acceleration, during > queuing

Re: [PATCH v8 3/6] rcu/trace: Add tracing for how segcb list changes

2020-11-03 Thread Joel Fernandes
On Mon, Oct 26, 2020 at 12:59:13PM +0100, Frederic Weisbecker wrote: > On Wed, Oct 21, 2020 at 03:08:10PM -0400, Joel Fernandes (Google) wrote: > > Track how the segcb list changes before/after acceleration, during > > queuing and during dequeuing. > > > > This has proved useful to discover an

Re: [PATCH v8 3/6] rcu/trace: Add tracing for how segcb list changes

2020-10-26 Thread Frederic Weisbecker
On Wed, Oct 21, 2020 at 03:08:10PM -0400, Joel Fernandes (Google) wrote: > Track how the segcb list changes before/after acceleration, during > queuing and during dequeuing. > > This has proved useful to discover an optimization to avoid unwanted GP > requests when there are no callbacks