[RFC PATCH 0/7] tracing: Use common error_log with probe events

[Masami Hiramatsu <mhiramat@xxxxxxxxxx>]

Hi Tom,

Here is a series of patches which applies common error_log framework to
probe events. While applying it, I found I missed to check some errors
in parser. Also, I made a testcase for this feature (only for kprobe
event side, please make your test for the hist errors too).
Thus I made this as a series which contains some bugfixes (a kind of
hardening), cleanups, and a test besides of the main patch.

Please feel free to pick this series to your series. I think some
bugfixes might be better to push Steve's urgent branch.
Let's talk with Steve.

Oh, note that this series can be applied on your v3 series, except
for [4/5] :)

Thank you,

---

Masami Hiramatsu (7):
      tracing/probe: Check maxactive error cases
      tracing/probe: Check event name length correctly
      tracing/probe: Check the size of argument name and body
      tracing/probe: Check event/group naming rule at parsing
      tracing/probe: Verify alloc_trace_*probe() result
      tracing: Use tracing error_log with probe events
      selftests/ftrace: Add error_log testcase for kprobe errors


 kernel/trace/trace_kprobe.c                        |   90 ++++--
 kernel/trace/trace_probe.c                         |  280 +++++++++++++++-----
 kernel/trace/trace_probe.h                         |   76 +++++
 kernel/trace/trace_uprobe.c                        |   43 ++-
 .../ftrace/test.d/kprobe/kprobe_syntax_errors.tc   |   91 +++++++
 5 files changed, 449 insertions(+), 131 deletions(-)
 create mode 100644 tools/testing/selftests/ftrace/test.d/kprobe/kprobe_syntax_errors.tc

--
Masami Hiramatsu <mhiramat@xxxxxxxxxx>