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    Subject[PATCH -tip 03/14] perf probe: Check hyphen only argument
    Date
    Check hyphen only command argument, because perf-probe doesn't
    support event recording feature yet.

    e.g.

    # perf probe -
    Error: '-' is not supported.

    Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
    Cc: Ingo Molnar <mingo@elte.hu>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
    Cc: Steven Rostedt <rostedt@goodmis.org>
    Cc: Jim Keniston <jkenisto@us.ibm.com>
    Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
    Cc: Christoph Hellwig <hch@infradead.org>
    Cc: Frank Ch. Eigler <fche@redhat.com>
    Cc: Frederic Weisbecker <fweisbec@gmail.com>
    Cc: Jason Baron <jbaron@redhat.com>
    Cc: K.Prasad <prasad@linux.vnet.ibm.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
    ---

    tools/perf/builtin-probe.c | 7 ++++++-
    1 files changed, 6 insertions(+), 1 deletions(-)

    diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
    index 559eeb4..919037b 100644
    --- a/tools/perf/builtin-probe.c
    +++ b/tools/perf/builtin-probe.c
    @@ -205,8 +205,13 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)

    argc = parse_options(argc, argv, options, probe_usage,
    PARSE_OPT_STOP_AT_NON_OPTION);
    - if (argc > 0)
    + if (argc > 0) {
    + if (strcmp(argv[0], "-") == 0) {
    + pr_warning(" Error: '-' is not supported.\n");
    + usage_with_options(probe_usage, options);
    + }
    parse_probe_event_argv(argc, argv);
    + }

    if ((!session.nr_probe && !session.dellist && !session.list_events))
    usage_with_options(probe_usage, options);

    --
    Masami Hiramatsu

    Software Engineer
    Hitachi Computer Products (America), Inc.
    Software Solutions Division

    e-mail: mhiramat@redhat.com


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