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    Subject[PATCH 3.19.y-ckt 168/170] perf stat: Document --detailed option
    Date
    3.19.8-ckt18 -stable review patch.  If anyone has any objections, please let me know.

    ---8<------------------------------------------------------------

    From: Borislav Petkov <bp@suse.de>

    commit f594bae08183fb6b57db55387794ece3e1edf6f6 upstream.

    I'm surprised this remained undocumented since at least 2011. And it is
    actually a very useful switch, as Steve and I came to realize recently.

    Add the text from

    2cba3ffb9a9d ("perf stat: Add -d -d and -d -d -d options to show more CPU events")

    which added the incrementing aspect to -d.

    Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    Signed-off-by: Borislav Petkov <bp@suse.de>
    Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
    Cc: David Ahern <dsahern@gmail.com>
    Cc: Davidlohr Bueso <dbueso@suse.com>
    Cc: Jiri Olsa <jolsa@redhat.com>
    Cc: Mel Gorman <mgorman@suse.com>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Steven Rostedt <rostedt@goodmis.org>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Fixes: 2cba3ffb9a9d ("perf stat: Add -d -d and -d -d -d options to show more CPU events")
    Link: http://lkml.kernel.org/r/1457347294-32546-1-git-send-email-bp@alien8.de
    Signed-off-by: Ingo Molnar <mingo@kernel.org>
    Signed-off-by: Kamal Mostafa <kamal@canonical.com>
    ---
    tools/perf/Documentation/perf-stat.txt | 8 ++++++++
    1 file changed, 8 insertions(+)

    diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt
    index 29ee857..6f9fbb4 100644
    --- a/tools/perf/Documentation/perf-stat.txt
    +++ b/tools/perf/Documentation/perf-stat.txt
    @@ -50,6 +50,14 @@ OPTIONS
    --scale::
    scale/normalize counter values

    +-d::
    +--detailed::
    + print more detailed statistics, can be specified up to 3 times
    +
    + -d: detailed events, L1 and LLC data cache
    + -d -d: more detailed events, dTLB and iTLB events
    + -d -d -d: very detailed events, adding prefetch events
    +
    -r::
    --repeat=<n>::
    repeat command and print average + stddev (max: 100). 0 means forever.
    --
    2.7.4
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