static int *pfd_array;
static int cpu_cnt;
+static bool is_hypervisor(void)
+{
+ char *line = NULL;
+ bool ret = false;
+ size_t len;
+ FILE *fp;
+
+ fp = fopen("/proc/cpuinfo", "r");
+ if (!fp)
+ return false;
+
+ while (getline(&line, &len, fp) != -1) {
+ if (!strncmp(line, "flags", 5)) {
+ if (strstr(line, "hypervisor") != NULL)
+ ret = true;
+ break;
+ }
+ }
+
+ free(line);
+ fclose(fp);
+ return ret;
+}
+
static int create_perf_events(void)
{
struct perf_event_attr attr = {0};
goto cleanup;
}
+ if (is_hypervisor()) {
+ /* As of today, LBR in hypervisor cannot be stopped before
+ * too many entries are flushed. Skip the hit/waste test
+ * for now in hypervisor until we optimize the LBR in
+ * hypervisor.
+ */
+ test__skip();
+ goto cleanup;
+ }
+
ASSERT_GT(skel->bss->test1_hits, 6, "find_looptest_in_lbr");
/* Given we stop LBR in software, we will waste a few entries.