1. 17 May, 2021 1 commit
    • Jin Yao's avatar
      perf header: Support HYBRID_TOPOLOGY feature · f7d74ce3
      Jin Yao authored
      
      It is useful to let the user know about the hybrid topology.
      
      Add the HYBRID_TOPOLOGY feature in header to indicate the core CPUs
      and the atom CPUs.
      
      With this patch a perf.data generated on a hybrid platform reports
      the hybrid CPU list:
      
        root@otcpl-adl-s-2:~# perf report --header-only -I
        ...
        # hybrid cpu system:
        # cpu_core cpu list : 0-15
        # cpu_atom cpu list : 16-23
      
      For a perf.data generated on a non-hybrid platform, reports a message
      that HYBRID_TOPOLOGY is missing:
      
        root@kbl-ppc:~# perf report --header-only -I
        ...
        # missing features: TRACING_DATA BRANCH_STACK GROUP_DESC AUXTRACE STAT CLOCKID DIR_FORMAT COMPRESSED CLOCK_DATA HYBRID_TOPOLOGY
      Signed-off-by: default avatarJin Yao <yao.jin@linux.intel.com>
      Acked-by: default avatarJiri Olsa <jolsa@redhat.com>
      Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: Jin Yao <yao.jin@intel.com>
      Cc: Kan Liang <kan.liang@linux.intel.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Link: http://lore.kernel.org/lkml/20210514122948.9472-2-yao.jin@linux.intel.com
      
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      f7d74ce3
  2. 22 Aug, 2019 1 commit
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