perf probe: Check hyphen only argument
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: 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: 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> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20091215153128.17436.9266.stgit@dhcp-100-2-132.bos.redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -205,8 +205,13 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
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argc = parse_options(argc, argv, options, probe_usage,
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PARSE_OPT_STOP_AT_NON_OPTION);
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if (argc > 0)
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if (argc > 0) {
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if (strcmp(argv[0], "-") == 0) {
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pr_warning(" Error: '-' is not supported.\n");
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usage_with_options(probe_usage, options);
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}
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parse_probe_event_argv(argc, argv);
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}
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if ((!session.nr_probe && !session.dellist && !session.list_events))
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usage_with_options(probe_usage, options);
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