@@ -5,9 +5,56 @@
#include "mem_counters.h"
+static bool check_imc_interface_glob_lck(void)
+{
+ if (!access("/sys/devices/thread_imc/interface/glob_lck", F_OK))
+ return true;
+
+ return false;
+}
+
static int testcase(void)
{
- return 0;
+ struct event events[2];
+
+ if (!check_imc_interface_glob_lck()) {
+ printf("Test not supported\n");
+ return MAGIC_SKIP_RETURN_VALUE;
+ }
+
+ if (!is_mem_counters_device_enabled(CORE) || !is_mem_counters_device_enabled(THREAD)) {
+ printf("%s: IMC device not found. So exiting the test\n", __FUNCTION__);
+ return -1;
+ }
+
+ if (setup_mem_counters_event(THREAD, &events[0], 0xe0, "thread_imc/cycles")) {
+ printf("%s setup_mem_counters_event for thread_imc failed\n", __FUNCTION__);
+ return -1;
+ }
+
+ if (setup_mem_counters_event(CORE, &events[1], 0xe0, "core_imc/cycles")) {
+ printf("%s setup_mem_counters_event for core_imc failed\n", __FUNCTION__);
+ return -1;
+ }
+
+ if (event_open(&events[0])) {
+ perror("thread_imc: perf_event_open");
+ return -1;
+ }
+
+ /*
+ * If we have the Global lock patchset applied to kernel
+ * event_open for events[1] should fail with resource busy
+ */
+ if (event_open_with_cpu(&events[1], 0)) {
+ /*
+ * Check for the errno to certify the test result
+ */
+ if (errno == 16) // Resource busy (EBUSY)
+ return 0;
+ }
+
+ return -1;
}
static int imc_global_lock_test(void)