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    Subject[PATCH] perf kmem: Print usage help for unknown commands
    Date
    This patch fixes "perf kmem" to print usage help instead of doing nothing.

    Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
    Cc: Li Zefan <lizf@cn.fujitsu.com>
    Cc: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
    Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
    ---
    tools/perf/builtin-kmem.c | 3 ++-
    1 files changed, 2 insertions(+), 1 deletions(-)

    diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
    index 33bb9df..93c67bf 100644
    --- a/tools/perf/builtin-kmem.c
    +++ b/tools/perf/builtin-kmem.c
    @@ -784,7 +784,8 @@ int cmd_kmem(int argc, const char **argv, const char *prefix __used)
    setup_sorting(&alloc_sort, default_sort_order);

    return __cmd_kmem();
    - }
    + } else
    + usage_with_options(kmem_usage, kmem_options);

    return 0;
    }
    --
    1.6.0.4


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