Merge tag 'perf-core-for-mingo-2' of git://git.kernel.org/pub/scm/linux/kernel/git...

Pull perf/core improvements from Arnaldo Carvalho de Melo:

User visible changes:

  - Support handling complete branch stacks as histograms (Andi Kleen)

Infrastructure changes:

  - Prep work for supporting per-pkg and snapshot counters in 'perf stat' (Jiri Olsa)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>