[GIT PULL] perf callchain improvement and fixes

[Frederic Weisbecker]

Ingo,

Please pull the perf/core branch that can be found at:

git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing.git
	perf/core

Unfortunately we were missing a lot of callchains in multithread
cases. And this was not a regression, it was rather the fact I
was missing a part of the histogram processing: the collapsing.

Anyway, this is eventually fixed. Thanks a lot to Chistoph Hellwig
who reported this.

Thanks,
	Frederic
---

Frederic Weisbecker (3):
      perf: Keep track of the max depth of a callchain
      perf: Rename append_callchain into callchain_append
      perf: Support for callchains merge


 tools/perf/builtin-report.c |    3 +-
 tools/perf/util/callchain.c |   98 ++++++++++++++++++++++++++++++++++---------
 tools/perf/util/callchain.h |   25 +++++++----
 tools/perf/util/hist.c      |    4 +-
 tools/perf/util/sort.h      |    2 +-
 5 files changed, 100 insertions(+), 32 deletions(-)
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