Re: Instrumentation and RCU

[Steven Rostedt]

On Mon, 9 Mar 2020 14:52:40 -0400 (EDT)
Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx> wrote:

> And when I say "go back to plain RCU", I really mean removing use of SRCU
> from the tracepoints until we have other purposes for it (e.g. taking
> faults within specific tracepoint probes such as syscall enter/exit).

Actually, with both you and Alexei talking about having a sleeping
tracepoint callback, where we can add a can sleep check (but not in the
DO_TRACE macro, I would think that registered sleeping callbacks would be
its own callback), I would think we do not want to remove the SRCU usage.

-- Steve