On Thu, 17 Jul 2025 11:40:28 -0400 Steven Rostedt <rostedt@xxxxxxxxxxx> wrote: > Yes, it is a tracepoint infra problem that we are trying to solve. The > reason we are trying to solve it is because BPF programs can extend the > time a tracepoint takes. If anything else extended the time, this would > need to be solved as well. But currently it's only BPF programs that > cause the issue. BTW, if we can't solve this issue and something else came along and attached to tracepoints that caused unbounded latency, I would also argue that whatever came along would need to be prevented from being configured with PREEMPT_RT. My comment wasn't a strike against BPF programs; It was a strike against something adding unbounded latency into a critical section that has preemption disabled. -- Steve
