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

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

User visible changes:

  - Use the alternative with the most descriptive filename containing
    a vmlinux file for a given build-id, providing a better title line
    for tools such as 'annotate'. (Arnaldo Carvalho de Melo)

  - Remove help messages about previous right and left arrow keybidings, that
    were repurposed for horizontal scrolling. (Arnaldo Carvalho de Melo)

  - Inform how to reset the symbol filter in the hists browser. (top & report)
    (Arnaldo Carvalho de Melo)

  - Add 'm' key for context menu display in the hists browser, that became
    inacessible with the repurposing of the right arrow key for horizontal
    scrolling. (Namhyung Kim)

  - Use debug_frame for callchains if eh_frame is unusable. (Rabin Vicent)

Build fixes:

  - Fix strict-aliasing breakage with gcc 4.4 in the READ_ONCE/WRITE_ONCE code
    adopted from the kernel tree, that builds with -fno-strict-aliasing while
    tools/perf/ uses -Wstrict-aliasing=3. (Jiri Olsa)

  - Fix unw_word_t pointer casts in code using libunwind for callchains,
    fixing the build in at least 32-bit MIPS systems. (Rabin Vicent)

  - Work around cross compile build problems related to fixdep. (Jiri Olsa)

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

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