515.43.04

kernel-open/nvidia-uvm/uvm_fault_buffer_flush_test.c

@@ -0,0 +1,69 @@
+/*******************************************************************************
+    Copyright (c) 2016-2019 NVIDIA Corporation
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to
+    deal in the Software without restriction, including without limitation the
+    rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+    sell copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+        The above copyright notice and this permission notice shall be
+        included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+    THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+    DEALINGS IN THE SOFTWARE.
+
+*******************************************************************************/
+
+#include "uvm_common.h"
+#include "uvm_linux.h"
+#include "uvm_global.h"
+#include "uvm_gpu.h"
+#include "uvm_gpu_replayable_faults.h"
+#include "uvm_test.h"
+#include "uvm_va_space.h"
+
+NV_STATUS uvm_test_fault_buffer_flush(UVM_TEST_FAULT_BUFFER_FLUSH_PARAMS *params, struct file *filp)
+{
+    NV_STATUS status = NV_OK;
+    uvm_va_space_t *va_space = uvm_va_space_get(filp);
+    uvm_gpu_t *gpu;
+    uvm_global_processor_mask_t retained_gpus;
+    NvU64 i;
+
+    uvm_global_processor_mask_zero(&retained_gpus);
+
+    uvm_va_space_down_read(va_space);
+
+    for_each_va_space_gpu(gpu, va_space) {
+        if (gpu->parent->replayable_faults_supported)
+            uvm_global_processor_mask_set(&retained_gpus, gpu->global_id);
+    }
+
+    uvm_global_mask_retain(&retained_gpus);
+
+    uvm_va_space_up_read(va_space);
+
+    if (uvm_global_processor_mask_empty(&retained_gpus))
+        return NV_ERR_INVALID_DEVICE;
+
+    for (i = 0; i < params->iterations; i++) {
+        if (fatal_signal_pending(current)) {
+            status = NV_ERR_SIGNAL_PENDING;
+            break;
+        }
+
+        for_each_global_gpu_in_mask(gpu, &retained_gpus)
+            TEST_CHECK_GOTO(uvm_gpu_fault_buffer_flush(gpu) == NV_OK, out);
+    }
+
+out:
+    uvm_global_mask_release(&retained_gpus);
+    return status;
+}