mirror of https://gitee.com/openkylin/linux.git
perf_counter tools: when no command is feed to perfstat, display help and exit
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -387,6 +387,9 @@ int do_perfstat(int argc, char *argv[])
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argc -= optind;
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argc -= optind;
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argv += optind;
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argv += optind;
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if (!argc)
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display_help();
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/*
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/*
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* Enable counters and exec the command:
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* Enable counters and exec the command:
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*/
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*/
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