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authorArnaldo Carvalho de Melo <acme@redhat.com>2019-09-30 17:53:00 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2019-10-07 18:22:17 +0300
commit608127f73779bfc199158b61efdbdb690720e542 (patch)
tree6305a4ec15bc3574c0b994433ed44ac8c1538ad8 /tools/perf/builtin-top.c
parentf1cedfb82858c8a7ec21e45d0ce7b6e2ce9edea0 (diff)
downloadlinux-608127f73779bfc199158b61efdbdb690720e542.tar.xz
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>
Diffstat (limited to 'tools/perf/builtin-top.c')
-rw-r--r--tools/perf/builtin-top.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 1f60124eb19b..611d03030abc 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -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)