ring-buffer/for-next

Head SHA1: fe832be05a8eee5f1488cbcc2c562dd82d079fd6


Steven Rostedt (Google) (1):
      ring-buffer: Have mmapped ring buffer keep track of missed events

Vincent Donnefort (5):
      ring-buffer: Allocate sub-buffers with __GFP_COMP
      ring-buffer: Introducing ring-buffer mapping functions
      tracing: Allow user-space mapping of the ring-buffer
      Documentation: tracing: Add ring-buffer mapping
      ring-buffer/selftest: Add ring-buffer mapping test

----
 Documentation/trace/index.rst                  |   1 +
 Documentation/trace/ring-buffer-map.rst        | 106 ++++++
 include/linux/ring_buffer.h                    |   6 +
 include/uapi/linux/trace_mmap.h                |  48 +++
 kernel/trace/ring_buffer.c                     | 471 ++++++++++++++++++++++++-
 kernel/trace/trace.c                           | 104 +++++-
 kernel/trace/trace.h                           |   1 +
 tools/testing/selftests/ring-buffer/.gitignore |   1 +
 tools/testing/selftests/ring-buffer/Makefile   |   8 +
 tools/testing/selftests/ring-buffer/config     |   2 +
 tools/testing/selftests/ring-buffer/map_test.c | 294 +++++++++++++++
 11 files changed, 1026 insertions(+), 16 deletions(-)
 create mode 100644 Documentation/trace/ring-buffer-map.rst
 create mode 100644 include/uapi/linux/trace_mmap.h
 create mode 100644 tools/testing/selftests/ring-buffer/.gitignore
 create mode 100644 tools/testing/selftests/ring-buffer/Makefile
 create mode 100644 tools/testing/selftests/ring-buffer/config
 create mode 100644 tools/testing/selftests/ring-buffer/map_test.c