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0cef141e86
$ perf list metricgroups gives List of pre-defined events (to be used in -e): Metric Groups: Backend Bad BadSpec But that's incorrect of course because metric groups or metrics can only be specified with -M. So fix the message to say -e or -M Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: https://lore.kernel.org/r/20221004192634.998984-1-ak@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>