Re: [lttng-dev] real time Userspace RCU

2016-03-11 Thread Paul E. McKenney
On Thu, Mar 10, 2016 at 08:53:05PM +, Mathieu Desnoyers wrote: > - On Mar 10, 2016, at 3:33 PM, Yuxin Ren r...@gwmail.gwu.edu wrote: > > > Thank you for your reply. > > > > I want to generally understand how to apply urcu to real time systems. > > I know real time system focus on predicta

Re: [lttng-dev] real time Userspace RCU

2016-03-11 Thread Michel Dagenais
Indeed, all the relevant articles that I know on that topic were written by Paul. If your real-time tasks are on the read side of RCU, they should not block because of that. However, reclaiming the memory and the associated machinery that sometimes involves inter-processor interrupts may cause p

Re: [lttng-dev] real time Userspace RCU

2016-03-11 Thread Mathieu Desnoyers
- On Mar 11, 2016, at 6:45 AM, Paul E. McKenney paul...@linux.vnet.ibm.com wrote: > On Thu, Mar 10, 2016 at 08:53:05PM +, Mathieu Desnoyers wrote: >> - On Mar 10, 2016, at 3:33 PM, Yuxin Ren r...@gwmail.gwu.edu wrote: >> >> > Thank you for your reply. >> > >> > I want to generally u