linux-kernel - [RFC PATCH v3 0/5] Faultable Tracepoints

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Date:   Mon,  2 Oct 2023 16:25:26 -0400
From:   Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     linux-kernel@...r.kernel.org,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Michael Jeanson <mjeanson@...icios.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Yonghong Song <yhs@...com>,
        "Paul E . McKenney" <paulmck@...nel.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>, bpf@...r.kernel.org,
        Joel Fernandes <joel@...lfernandes.org>
Subject: [RFC PATCH v3 0/5] Faultable Tracepoints

Wire up the system call tracepoints with Tasks Trace RCU to allow
the ftrace, perf, and eBPF tracers to handle page faults.

This series does the initial wire-up allowing tracers to handle page
faults, but leaves out the actual handling of said page faults as future
work.

This series is based on kernel v6.5.5.

Feedback is welcome!

Thanks,

Mathieu

Cc: Michael Jeanson <mjeanson@...icios.com>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Alexei Starovoitov <ast@...nel.org>
Cc: Yonghong Song <yhs@...com>
Cc: Paul E. McKenney <paulmck@...nel.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: bpf@...r.kernel.org
Cc: Joel Fernandes <joel@...lfernandes.org>

Mathieu Desnoyers (5):
  tracing: Introduce faultable tracepoints (v3)
  tracing/ftrace: Add support for faultable tracepoints
  tracing/bpf-trace: add support for faultable tracepoints
  tracing/perf: add support for faultable tracepoints
  tracing: convert sys_enter/exit to faultable tracepoints

 include/linux/tracepoint-defs.h | 14 +++++
 include/linux/tracepoint.h      | 88 ++++++++++++++++++++++---------
 include/trace/bpf_probe.h       | 21 ++++++--
 include/trace/define_trace.h    |  7 +++
 include/trace/events/syscalls.h |  4 +-
 include/trace/perf.h            | 27 ++++++++--
 include/trace/trace_events.h    | 73 ++++++++++++++++++++++++--
 init/Kconfig                    |  1 +
 kernel/trace/bpf_trace.c        | 10 +++-
 kernel/trace/trace_events.c     | 26 +++++++---
 kernel/trace/trace_fprobe.c     |  5 +-
 kernel/trace/trace_syscalls.c   | 92 +++++++++++++++++++++++----------
 kernel/tracepoint.c             | 58 +++++++++++----------
 13 files changed, 325 insertions(+), 101 deletions(-)

-- 
2.25.1