[GIT PULL] tracing: Updates for 5.8

[Steven Rostedt <rostedt@goodmis.org>]

Linus,

Tracing updates for 5.8:

No new features this release. Mostly clean ups, restructuring and
documentation.

 - Have ftrace_bug() show ftrace errors before the WARN, as the WARN will
   reboot the box before the error messages are printed if panic_on_warn
   is set.

 - Have traceoff_on_warn disable tracing sooner (before prints)

 - Write a message to the trace buffer that its being disabled when
   disable_trace_on_warning() is set.

 - Separate out synthetic events from histogram code to let it be used by
   other parts of the kernel.

 - More documentation on histogram design.

 - Other small fixes and clean ups.


Please pull the latest trace-v5.8 tree, which can be found at:


  git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
trace-v5.8

Tag SHA1: a9317885fb7c4418fea2588e3fbaeaafd773b106
Head SHA1: 388d8bdb87e01bcea6d0b2bf797b5f6d7b2401fb


Cheng Jian (1):
      ftrace: show debugging information when panic_on_warn set

Julia Lawall (1):
      tracing/probe: reverse arguments to list_add

Masami Hiramatsu (1):
      tools/bootconfig: Add a summary of test cases and return error

Mel Gorman (1):
      tracing: Remove obsolete PREEMPTIRQ_EVENTS kconfig option

Peter Zijlstra (1):
      ftrace,bug: Improve traceoff_on_warn

Steven Rostedt (VMware) (2):
      tracing/doc: Fix typos in histogram-design.rst
      tracing: Add a trace print when traceoff_on_warning is triggered

Tom Zanussi (7):
      tracing: Check state.disabled in synth event trace functions
      tracing: Add histogram-design document
      tracing: Add hist_debug trace event files for histogram debugging
      tracing: Fix events.rst section numbering
      tracing: Move synthetic events to a separate file
      selftests/ftrace: Distinguish between hist and synthetic event checks
      tracing/doc: Fix ascii-art in histogram-design.rst

----
 Documentation/trace/events.rst                     |   28 +-
 Documentation/trace/histogram-design.rst           | 2115 +++++++++++++++++++
 kernel/trace/Kconfig                               |   52 +-
 kernel/trace/Makefile                              |    1 +
 kernel/trace/ftrace.c                              |    8 +-
 kernel/trace/trace.c                               |    5 +-
 kernel/trace/trace.h                               |    1 +
 kernel/trace/trace_events.c                        |    4 +
 kernel/trace/trace_events_hist.c                   | 2193 +++-----------------
 kernel/trace/trace_events_synth.c                  | 1789 ++++++++++++++++
 kernel/trace/trace_probe.c                         |    2 +-
 kernel/trace/trace_synth.h                         |   36 +
 lib/bug.c                                          |    3 +
 tools/bootconfig/test-bootconfig.sh                |    7 +
 .../inter-event/trigger-field-variable-support.tc  |    5 +
 .../trigger-inter-event-combined-hist.tc           |    5 +
 .../inter-event/trigger-multi-actions-accept.tc    |    5 +
 .../inter-event/trigger-onmatch-action-hist.tc     |    5 +
 .../trigger-onmatch-onmax-action-hist.tc           |    5 +
 .../inter-event/trigger-onmax-action-hist.tc       |    5 +
 .../inter-event/trigger-snapshot-action-hist.tc    |    5 +
 .../inter-event/trigger-trace-action-hist.tc       |    5 +
 22 files changed, 4396 insertions(+), 1888 deletions(-)
 create mode 100644 Documentation/trace/histogram-design.rst
 create mode 100644 kernel/trace/trace_events_synth.c
 create mode 100644 kernel/trace/trace_synth.h
---------------------------