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perf top: Initialize perf_env->cpuid, needed by the per arch annotation init routine
Just read it so that later on the per arch init routine can use it, e.g. x86__annotate_init(). When using a perf.data file this is obtained from a header that was put there by 'perf record', and then it may be for another machine, another arch. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-4t4n3o8l8s0tc2b1pq53hyr4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -1560,6 +1560,17 @@ int cmd_top(int argc, const char **argv)
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status = perf_config(perf_top_config, &top);
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if (status)
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return status;
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/*
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* Since the per arch annotation init routine may need the cpuid, read
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* it here, since we are not getting this from the perf.data header.
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*/
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status = perf_env__read_cpuid(&perf_env);
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if (status) {
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pr_err("Couldn't read the cpuid for this machine: %s\n",
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str_error_r(errno, errbuf, sizeof(errbuf)));
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goto out_delete_evlist;
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}
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top.evlist->env = &perf_env;
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argc = parse_options(argc, argv, options, top_usage, 0);
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if (argc)
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