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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: Jin Yao <yao.jin@linux.intel.com> Acked-by: Jiri 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: Arnaldo Carvalho de Melo <acme@redhat.com> |
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