Commit 608127f7 authored Sep 30, 2019 by Arnaldo Carvalho de Melo

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>

parent f1cedfb8

tools/perf/builtin-top.c

+11 −0

Original line number	Diff line number	Diff line
		@@ -1560,6 +1560,17 @@ int cmd_top(int argc, const char **argv)
		status = perf_config(perf_top_config, &top);
		if (status)
		return status;
		/*
		* Since the per arch annotation init routine may need the cpuid, read
		* it here, since we are not getting this from the perf.data header.
		*/
		status = perf_env__read_cpuid(&perf_env);
		if (status) {
		pr_err("Couldn't read the cpuid for this machine: %s\n",
		str_error_r(errno, errbuf, sizeof(errbuf)));
		goto out_delete_evlist;
		}
		top.evlist->env = &perf_env;

		argc = parse_options(argc, argv, options, top_usage, 0);
		if (argc)

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