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    Subject[PATCH] perf bench numa: Add more comment for -c option
    Date
    Adding more commentary for -c/--show_convergence option,
    to explain how the convergence is defined.

    Before:
    -c, --show_convergence
    show convergence details

    Now:
    -c, --show_convergence
    show convergence details, convergence is reached \
    when each process (all its threads) are running on the single NUMA node

    Suggested--by: Jiri Hladky <jhladky@redhat.com>
    Signed-off-by: Jiri Olsa <jolsa@kernel.org>
    Cc: David Ahern <dsahern@gmail.com>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
    Link: http://lkml.kernel.org/n/tip-jt15298zr1ajgonuvt8c88z1@git.kernel.org
    ---
    tools/perf/bench/numa.c | 3 ++-
    1 file changed, 2 insertions(+), 1 deletion(-)

    diff --git a/tools/perf/bench/numa.c b/tools/perf/bench/numa.c
    index 3083fc36282b..18b855ae5df6 100644
    --- a/tools/perf/bench/numa.c
    +++ b/tools/perf/bench/numa.c
    @@ -187,7 +187,8 @@ static const struct option options[] = {
    OPT_INCR ('d', "show_details" , &p0.show_details, "Show details"),
    OPT_INCR ('a', "all" , &p0.run_all, "Run all tests in the suite"),
    OPT_INTEGER('H', "thp" , &p0.thp, "MADV_NOHUGEPAGE < 0 < MADV_HUGEPAGE"),
    - OPT_BOOLEAN('c', "show_convergence", &p0.show_convergence, "show convergence details"),
    + OPT_BOOLEAN('c', "show_convergence", &p0.show_convergence, "show convergence details, "
    + "convergence is reached when each process (all its threads) are running on the single NUMA node"),
    OPT_BOOLEAN('m', "measure_convergence", &p0.measure_convergence, "measure convergence latency"),
    OPT_BOOLEAN('q', "quiet" , &p0.show_quiet, "quiet mode"),
    OPT_BOOLEAN('S', "serialize-startup", &p0.serialize_startup,"serialize thread startup"),
    --
    2.7.4
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