Perf lock improvements, to re-introduce aggregation by caller to perf
lock report, and improve command line handling for perf lock info.

These changes are technically independent, but submitted together to
ensure they apply cleanly.

Nick Forrington (2):
  perf lock report: Restore aggregation by caller by default
  perf lock info: Enforce exactly one of --map and --thread

 tools/perf/Documentation/perf-lock.txt |  4 +++
 tools/perf/builtin-lock.c              | 49 ++++++++++++++++++++++++--
 2 files changed, 50 insertions(+), 3 deletions(-)

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2.42.0