[tip:perfcounters/core] perf record/report: Add call graph / call chain profiling

[tip-bot for Ingo Molnar]

Commit-ID:  ced7769616b40c7a0d597af775d4f123fb54dc95
Gitweb:     http://git.kernel.org/tip/ced7769616b40c7a0d597af775d4f123fb54dc95
Author:     Ingo Molnar <mingo@xxxxxxx>
AuthorDate: Sun, 14 Jun 2009 15:04:15 +0200
Committer:  Ingo Molnar <mingo@xxxxxxx>
CommitDate: Sun, 14 Jun 2009 15:04:15 +0200

perf record/report: Add call graph / call chain profiling

Add the first steps of call-graph profiling:

 - add the -c (--call-graph) option to perf record
 - parse the call-graph record and printout out under -D (--dump-trace)

The call-graph data is not put into the histogram yet, but it
can be seen that it's being processed correctly:

0x3ce0 [0x38]: event: 35
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