perf top: Do not bail out when perf_env__read_cpuid() returns ENOSYS

[tomoyo/tomoyo-test1.git] / tools / perf / builtin-top.c

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index dc80044..795e353 100644 (file)
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1568,9 +1568,13 @@ int cmd_top(int argc, const char **argv)
         */
        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;
+               /*
+                * Some arches do not provide a get_cpuid(), so just use pr_debug, otherwise
+                * warn the user explicitely.
+                */
+               eprintf(status == ENOSYS ? 1 : 0, verbose,
+                       "Couldn't read the cpuid for this machine: %s\n",
+                       str_error_r(errno, errbuf, sizeof(errbuf)));
        }
        top.evlist->env = &perf_env;