[PATCH 0/5] perf tools: Add support for multiline headers and spans

[Jiri Olsa <jolsa@kernel.org>]

hi,
the c2c output readability heavily depends on headers
being displayed on multiple lines and allowing span
of some headers over multiple columns, like:

#                                Total     %All             Total  ----- Core Load Hit -----  -- LLC Load Hit --  ----- LLC Load Hitm -----
# Index             Cacheline  records  Ld Miss    %hitm    Loads       FB       L1       L2       Llc       Rmt    Total      Lcl      Rmt
# .....  ....................  .......  .......  .......  .......  .......  .......  .......  ........  ........  .......  .......  .......
#
      0        0x7fbe65acee00      203    2.37%    3.34%      162       26       72        0        20         2       39       11       28


I haven't found use for this under current perf code,
so there's no actual current user in perf code of
those features.

Also available in:
  git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
  perf/fixes

thanks,
jirka

---
Jiri Olsa (5):
      perf tools: Introduce nr_header_lines into struct perf_hpp_list
      perf tools: Add line argument into perf_hpp_fmt's header callback
      perf tools tui: Display multiple header lines
      perf tools stdio: Display multiple header lines
      perf tools: Add support for header span

 tools/perf/builtin-diff.c      |  4 +++-
 tools/perf/ui/browsers/hists.c | 48 +++++++++++++++++++++++++++++++++++-------------
 tools/perf/ui/gtk/hists.c      |  2 +-
 tools/perf/ui/hist.c           |  4 +++-
 tools/perf/ui/stdio/hist.c     | 45 ++++++++++++++++++++++++++++++++-------------
 tools/perf/util/hist.h         |  3 ++-
 tools/perf/util/sort.c         |  7 +++++--
 7 files changed, 81 insertions(+), 32 deletions(-)