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:

  * Add --repeat global option to 'perf bench' to be used in benchmarks
    such as the existing 'futex' one, that was modified to use it instead
    of a local option. (Davidlohr Bueso)

  * Fix fd -> pathname resolution in 'trace', be it using /proc or
    a vfs_getname probe point. (Arnaldo Carvalho de Melo)

  * Add suggestion of how to set perf_event_paranoid sysctl, to help
    non-root users trying tools like 'trace' to get a working environment.
    (Arnaldo Carvalho de Melo)

Fixes:

  * Fix memory leak in the 'sched-messaging' perf bench test. (Davidlohr Bueso)

  * The -o and -n 'perf bench mem' options are mutually exclusive, emit error
    when both are specified. (Davidlohr Bueso)

  * Fix scrollbar refresh row index in the ui browser, problem exposed now
    that headers will be added and will be allowed to be switched on/off.
    (Jiri Olsa)

Cleanups:

  * Remove needless reassignments in 'trace' (Arnaldo Carvalho de Melo)

  * Cache the is_exit syscall test in 'trace) (Arnaldo Carvalho de Melo)

  * No need to reimplement err() in 'perf bench sched-messaging', drop barf().
    (Davidlohr Bueso).

  * Remove ev_name argument from perf_evsel__hists_browse, can be obtained
    from the other parameters. (Jiri Olsa)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>