Adding Performance Determinism Mode to rocm_smi lib, CLI & gtest.

A special mode of operation to achieve minimal performance variation by letting
the user have the ability to provide the desired frequency to be set as the soft limit.
The user can control the entry and exit to the mode via rocm-smi a mechanism to
enter / exit performance determinism mode as below.

Enter performance determinism mode:
- hold a lock
- write performance_determinism to power_dpm_force_performance_level
- write input clk_freq to pp_dpm_sclk
- release lock

Exit performance determinism_mode:
- hold a lock
- write auto to power_dpm_force_performance_level
- release lock

Signed-off-by: Divya Shikre <DivyaUday.Shikre@amd.com>
Change-Id: Ia24e27954cdf1c4337ffc83d8948fbdfaf4552d2

src/rocm_smi.cc

@@ -768,6 +768,23 @@ rsmi_dev_perf_level_get(uint32_t dv_ind, rsmi_dev_perf_level_t *perf) {
   CATCH
 }
 
+rsmi_status_t
+rsmi_perf_determinism_mode_set(uint32_t dv_ind, uint64_t freq_bitmask) {
+  TRY
+  DEVICE_MUTEX
+
+  rsmi_status_t ret = rsmi_dev_perf_level_set_v1(dv_ind,
+                                          RSMI_DEV_PERF_LEVEL_DETERMINISM);
+  if (ret != RSMI_STATUS_SUCCESS) {
+      return ret;
+  }
+  ret = rsmi_dev_gpu_clk_freq_set(dv_ind, RSMI_CLK_TYPE_SYS, freq_bitmask);
+
+  return ret;
+  CATCH
+}
+
+
 rsmi_status_t
 rsmi_dev_overdrive_level_get(uint32_t dv_ind, uint32_t *od) {
   TRY