PC Sampling: Disable coredump when sessions active

When doing a coredump, we try to park the wave and save its PC in
ttmp7/ttmp11, but these registers will be overwritten by PC Sampling
requests.

Change-Id: I60fb734eb3bed4ee3cc8d8bba9ec4a527fff9671

runtime/hsa-runtime/core/runtime/amd_aql_queue.cpp

@@ -1272,8 +1272,11 @@ bool AqlQueue::ExceptionHandler(hsa_signal_value_t error_code, void* arg) {
   // generated by hsa-runtime.
   if (!core::Runtime::runtime_singleton_->KfdVersion().supports_core_dump &&
       queue->agent_->isa()->GetMajorVersion() != 11) {
-    if (amd::coredump::dump_gpu_core())
-      debug_print("GPU core dump failed\n");
+
+    if (pcs::PcsRuntime::instance()->SessionsActive())
+      fprintf(stderr, "GPU core dump skipped because PC Sampling active\n");
+    else if (amd::coredump::dump_gpu_core())
+      fprintf(stderr, "GPU core dump failed\n");
     // supports_core_dump flag is overwritten to avoid generate core dump file again
     // caught by a different exception handler. Such as VMFaultHandler.
     core::Runtime::runtime_singleton_->KfdVersion(

runtime/hsa-runtime/core/runtime/runtime.cpp

@@ -1804,8 +1804,11 @@ bool Runtime::VMFaultHandler(hsa_signal_value_t val, void* arg) {
     // generated by hsa-runtime.
     if (faulty_agent && faulty_agent->isa()->GetMajorVersion() != 11 &&
         !runtime_singleton_->KfdVersion().supports_core_dump) {
-      if (amd::coredump::dump_gpu_core())
-        debug_print("GPU core dump failed\n");
+
+      if (pcs::PcsRuntime::instance()->SessionsActive())
+        fprintf(stderr, "GPU core dump skipped because PC Sampling active\n");
+      else if (amd::coredump::dump_gpu_core())
+        fprintf(stderr, "GPU core dump failed\n");
     }
     assert(false && "GPU memory access fault.");
     std::abort();