[PATCH v3 0/3] perf: add option to limit callchain stack scan to increase speed

[Waiman Long <Waiman.Long@hp.com>]

v2->v3:
 - Fix the commit log in the second patch which causes "git am" to fail.
 - Remove the 1st patch in v2 as the problem will be fixed by another
   patch from Arnaldo.

v1->v2:
 - Include a compilation fix patch and a code streamlining patch
   into the patch set.
 - Use the __stringify() macro in stringify.h instead of adding a
   duplicate macro.
 - Add the --max-stack option to perf-top as well.

This perf patch set contains the following changes:

Patch 1 - Streamline the append_chain() function to make it run a bit
          faster.
Patch 2 - Add a --max-stack option to perf-report to speed up its
          processing at the expense of less backtrace information
          available.
Patch 3 - Add a similar --max-stack option to perf-top.

Waiman Long (3):
  perf: streamline append_chain() function
  perf-report: add --max-stack option to limit callchain stack scan
  perf-top: add --max-stack option to limit callchain stack scan

 tools/perf/Documentation/perf-report.txt |    8 ++++++++
 tools/perf/Documentation/perf-top.txt    |    8 ++++++++
 tools/perf/builtin-report.c              |   22 +++++++++++++++++-----
 tools/perf/builtin-top.c                 |    9 +++++++--
 tools/perf/util/callchain.c              |    9 ++++-----
 tools/perf/util/machine.c                |   14 +++++++++-----
 tools/perf/util/machine.h                |    3 ++-
 tools/perf/util/session.c                |    3 ++-
 tools/perf/util/top.h                    |    1 +
 9 files changed, 58 insertions(+), 19 deletions(-)