git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
trace/for-next

Head SHA1: dc513fd5321d4c15ac1f820c224b2e5220b6e14f


Jia-Ju Bai (1):
      tracing: Add NULL checks for buffer in ring_buffer_free_read_page()

Mark Rutland (1):
      ftrace: Add sample with custom ops

Steven Rostedt (Google) (10):
      tracing: Add a way to filter function addresses to function names
      tracing/selftests: Add test for event filtering on function name
      tracing: Simplify calculating entry size using struct_size()
      tracing: Allow stacktraces to be saved as histogram variables
      tracing: Allow synthetic events to pass around stacktraces
      tracing/histogram: Add stacktrace type
      tracing/histogram: Document variable stacktrace
      tracing/histogram: Add simple tests for stacktrace usage of synthetic events
      perf/tracing: Use stage6 of tracing to not duplicate macros
      bpf/tracing: Use stage6 of tracing to not duplicate macros

----
 Documentation/trace/events.rst                     |  12 +
 Documentation/trace/histogram.rst                  | 129 +++++++++++
 include/trace/bpf_probe.h                          |  45 +---
 include/trace/perf.h                               |  46 +---
 include/trace/stages/stage6_event_callback.h       |   3 +
 kernel/trace/ring_buffer.c                         |   7 +-
 kernel/trace/trace.c                               |   2 +-
 kernel/trace/trace.h                               |   4 +
 kernel/trace/trace_events.c                        |   2 +-
 kernel/trace/trace_events_filter.c                 |  93 +++++++-
 kernel/trace/trace_events_hist.c                   |  63 ++++--
 kernel/trace/trace_events_synth.c                  |  83 ++++++-
 kernel/trace/trace_synth.h                         |   1 +
 samples/Kconfig                                    |   7 +
 samples/Makefile                                   |   1 +
 samples/ftrace/Makefile                            |   1 +
 samples/ftrace/ftrace-ops.c                        | 252 +++++++++++++++++++++
 .../ftrace/test.d/filter/event-filter-function.tc  |  58 +++++
 .../inter-event/trigger-synthetic-event-stack.tc   |  24 ++
 .../inter-event/trigger-synthetic-event-syntax.tc  |   6 +
 20 files changed, 729 insertions(+), 110 deletions(-)
 create mode 100644 samples/ftrace/ftrace-ops.c
 create mode 100644 tools/testing/selftests/ftrace/test.d/filter/event-filter-function.tc
 create mode 100644 tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-stack.tc