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

Pull perf/core refactorings and fixes from Arnaldo Carvalho de Melo:

Infrastructure changes:

  - Revert "perf tools: Improve setting of gcc debug option", -Og is broken,
    GCC PR created (Jiri Olsa)

  - More reference count fixes (Masami Hiramatsu)

  - Untangle browser setup (--stdio, --tui, etc) from argument checking,
    prep work to move the usage() code out of tools/perf for use by
    other tools/ living utilities (Namhyung Kim)

  - Delete half-processed hist entries when exiting 'perf top' (Namhyung Kim)

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