[PATCH v2 0/8] perf tools: perf tools: Clarify overwrite and backward, bugfix

[Wang Nan]

THe final result of this patchset is removing the concept of
'forward/backward', merge them into the concept of 'overwrite'.

Patch 1 to 5 clear arguments lists of many functions, remove the
'overwrite'. Because all callers of these functions doesn't need
the overwrite be set, we can simply remove them from arguments
lists and adjust code as if a 'false' is given.

Patch 6 fix a bug that forget to setting readonly for overwrite
ring buffers.

Patch 7 is suggested by Liang Kan, prevent dumpping duplicated
data if there's no so many events between two dumpping commands.

Patch 8 is 's/backward/overwrite'. After patch 8, the concept of
'backward' is removed from most of the code, make it uniform with
user interface ('--overwrite').

Cc: Kan Liang <kan.liang@xxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Zhang Mengting <zhangmengting@xxxxxxxxxx>

Wang Nan (8):
  perf tools: Remove 'overwrite' parameter from perf_evlist__mmap
  perf tools: Remove 'overwrite' parameter from perf_evlist__mmap_ex
  perf tools: Remove evlist->overwrite
  perf tools: Remove overwrite from arguments list of perf_mmap__push
  perf tools: Remove overwrite and check_messup from mmap read
  perf mmap: Fix perf backward recording
  perf tool: Don't discard prev in backward mode
  perf tools: Replace 'backward' to 'overwrite' in evlist, mmap and
    record

 tools/perf/arch/x86/tests/perf-time-to-tsc.c |  2 +-
 tools/perf/builtin-kvm.c                     |  2 +-
 tools/perf/builtin-record.c                  | 16 +++---
 tools/perf/builtin-top.c                     |  2 +-
 tools/perf/builtin-trace.c                   |  2 +-
 tools/perf/tests/backward-ring-buffer.c      |  6 +--
 tools/perf/tests/bpf.c                       |  2 +-
 tools/perf/tests/code-reading.c              |  2 +-
 tools/perf/tests/keep-tracking.c             |  2 +-
 tools/perf/tests/mmap-basic.c                |  2 +-
 tools/perf/tests/openat-syscall-tp-fields.c  |  2 +-
 tools/perf/tests/perf-record.c               |  2 +-
 tools/perf/tests/sw-clock.c                  |  2 +-
 tools/perf/tests/switch-tracking.c           |  2 +-
 tools/perf/tests/task-exit.c                 |  2 +-
 tools/perf/util/evlist.c                     | 53 ++++++++++----------
 tools/perf/util/evlist.h                     |  8 ++-
 tools/perf/util/mmap.c                       | 73 ++++++++++------------------
 tools/perf/util/mmap.h                       |  4 +-
 tools/perf/util/python.c                     |  2 +-
 20 files changed, 81 insertions(+), 107 deletions(-)

-- 
2.10.1