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Date:   Tue, 21 Nov 2023 11:07:53 -0500
From:   Steven Rostedt <rostedt@goodmis.org>
To:     Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc:     Peter Zijlstra <peterz@infradead.org>,
        "Paul E. McKenney" <paulmck@kernel.org>,
        Masami Hiramatsu <mhiramat@kernel.org>,
        linux-kernel@vger.kernel.org,
        Michael Jeanson <mjeanson@efficios.com>,
        Alexei Starovoitov <ast@kernel.org>,
        Yonghong Song <yhs@fb.com>, Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Jiri Olsa <jolsa@redhat.com>,
        Namhyung Kim <namhyung@kernel.org>, bpf@vger.kernel.org,
        Joel Fernandes <joel@joelfernandes.org>
Subject: Re: [PATCH v4 1/5] tracing: Introduce faultable tracepoints
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On Tue, 21 Nov 2023 11:00:13 -0500
Mathieu Desnoyers <mathieu.desnoyers@efficios.com> wrote:

> > tasks-tracing-rcu:
> >    extention of tasks to have critical-sections ? Should this simply be
> >    tasks?  
> 
> tasks-trace-rcu is meant to allow tasks to block/take a page fault 
> within the read-side. It is specialized for tracing and has a single 
> domain. It does not need the smp_mb on the read-side, which makes it 
> lower-overhead than SRCU.

IOW, task-trace-rcu allows the call to schedule in its critical section,
whereas task-rcu does not?

-- Steve