On Fri, 1 Mar 2024 12:25:10 -0800 "Paul E. McKenney" <paul...@kernel.org> wrote:
> > That would work for me. If there are no objections, I will make this > > change. > > But I did check the latency of synchronize_rcu_tasks_rude() (about 100ms) > and synchronize_rcu() (about 20ms). This is on a 80-hardware-thread > x86 system that is being flooded with calls to one or the other of > these two functions, but is otherwise idle. So adding that unnecessary > synchronize_rcu() adds about 20% to that synchronization delay. > > Which might still be OK, but... In the immortal words of MS-DOS, > "Are you sure?". ;-) It's just safe to keep it. It's definitely not a fast path. -- Steve
