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    perf list: Add metric groups to perf list · 71b0acce
    Andi Kleen 提交于
    Add code to perf list to print metric groups, and metrics
    that don't have an event name. The metricgroup code collects
    the eventgroups and events into a rblist, and then prints
    them according to the configured filters.
    
    The metricgroups are printed by default, but can be
    limited by perf list metric or perf list metricgroup
    
      % perf list metricgroup
      ..
      Metric Groups:
    
      DSB:
        DSB_Coverage
              [Fraction of Uops delivered by the DSB (aka Decoded Icache; or Uop Cache)]
      FLOPS:
        GFLOPs
              [Giga Floating Point Operations Per Second]
      Frontend:
        IFetch_Line_Utilization
              [Rough Estimation of fraction of fetched lines bytes that were likely consumed by program instructions]
      Frontend_Bandwidth:
        DSB_Coverage
              [Fraction of Uops delivered by the DSB (aka Decoded Icache; or Uop Cache)]
      Memory_BW:
        MLP
              [Memory-Level-Parallelism (average number of L1 miss demand load when there is at least 1 such miss)]
    
    v2: Check return value of asprintf to fix warning on FC26
    Fix key in lookup/addition for the groups list
    Signed-off-by: NAndi Kleen <ak@linux.intel.com>
    Acked-by: NJiri Olsa <jolsa@kernel.org>
    Link: http://lkml.kernel.org/r/20170831194036.30146-8-andi@firstfloor.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
    71b0acce
parse-events.c 60.6 KB