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https://github.com/NVIDIA/open-gpu-kernel-modules.git
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290 lines
11 KiB
C
290 lines
11 KiB
C
/*******************************************************************************
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Copyright (c) 2016-2019 NVIDIA Corporation
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to
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deal in the Software without restriction, including without limitation the
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rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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sell copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*******************************************************************************/
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#include "uvm_kvmalloc.h"
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#include "uvm_perf_module.h"
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#include "uvm_va_block.h"
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#include "uvm_va_space.h"
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#include "uvm_test.h"
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static const uvm_perf_module_type_t module1_type = UVM_PERF_MODULE_TYPE_TEST;
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typedef int module1_data_type_t;
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static const uvm_perf_module_type_t module2_type = UVM_PERF_MODULE_TYPE_TEST;
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typedef struct {
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int value[4];
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} module2_data_type_t;
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static uvm_perf_module_t module1;
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static uvm_perf_module_t module2;
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// Convenience function that obtains the data for the given module, and allocates it if it does not exist yet
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static void *get_or_alloc_data(uvm_perf_module_data_desc_t *modules_data, uvm_perf_module_t *module, size_t type_size)
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{
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void *data_ret;
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data_ret = uvm_perf_module_type_data(modules_data, module->type);
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if (!data_ret) {
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data_ret = uvm_kvmalloc_zero(type_size);
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if (data_ret)
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uvm_perf_module_type_set_data(modules_data, data_ret, module->type);
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}
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return data_ret;
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}
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// Block destruction callback for module1
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static void module1_destroy(uvm_perf_event_t event_id, uvm_perf_event_data_t *event_data)
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{
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uvm_va_block_t *va_block;
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void *data;
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if (event_id == UVM_PERF_EVENT_BLOCK_DESTROY) {
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va_block = event_data->block_destroy.block;
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}
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else {
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if (event_data->module_unload.module != &module1 || !event_data->module_unload.block)
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return;
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va_block = event_data->module_unload.block;
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}
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data = uvm_perf_module_type_data(va_block->perf_modules_data, module1.type);
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if (data) {
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uvm_kvfree(data);
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uvm_perf_module_type_unset_data(va_block->perf_modules_data, module1.type);
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}
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}
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// Page fault callback for module1
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static void module1_fault(uvm_perf_event_t event_id, uvm_perf_event_data_t *event_data)
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{
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module1_data_type_t *data;
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uvm_va_block_t *va_block;
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va_block = event_data->fault.block;
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data = get_or_alloc_data(va_block->perf_modules_data, &module1, sizeof(*data));
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if (!data)
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return;
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++(*data);
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}
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// Block destruction callback for module2
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static void module2_destroy(uvm_perf_event_t event_id, uvm_perf_event_data_t *event_data)
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{
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void *data;
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uvm_va_block_t *va_block;
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if (event_id == UVM_PERF_EVENT_BLOCK_DESTROY) {
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va_block = event_data->block_destroy.block;
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}
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else {
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if (event_data->module_unload.module != &module2 || !event_data->module_unload.block)
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return;
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va_block = event_data->module_unload.block;
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}
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data = uvm_perf_module_type_data(va_block->perf_modules_data, module2.type);
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if (data) {
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uvm_kvfree(data);
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uvm_perf_module_type_unset_data(va_block->perf_modules_data, module2.type);
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}
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}
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// Page fault callback for module2
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static void module2_fault(uvm_perf_event_t event_id, uvm_perf_event_data_t *event_data)
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{
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module2_data_type_t *data;
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uvm_va_block_t *va_block;
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va_block = event_data->fault.block;
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data = get_or_alloc_data(va_block->perf_modules_data, &module2, sizeof(*data));
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if (!data)
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return;
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data->value[0] += 1;
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data->value[1] += 2;
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data->value[2] += 3;
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data->value[3] += 4;
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}
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// This test:
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// 1) Initializes modules named module1 and module2
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// 2) Loads module1
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// 3) Gets two va_blocks that must already exist in the given address (created using user-level calls)
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// 4) Notifies some page faults on the blocks
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// 5) Checks if the callbacks have executed correctly
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// 6) Unloads module1
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// 7) Checks that data allocated by module1 has been freed
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// 8) Loads module2
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// 9) Notifies some page faults on the blocks
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// 10) Checks if the callbacks have executed correctly
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// 11) Unloads module2
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// 12) Checks that data allocated by module2 has been freed
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static NV_STATUS test_module_replace(uvm_va_space_t *va_space, NvU64 addr)
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{
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NV_STATUS status;
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uvm_perf_event_data_t event_data;
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void *module1_data;
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void *module2_data;
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uvm_va_block_t *block1, *block2;
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uvm_perf_module_event_callback_desc_t module1_callbacks[] = {
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{ UVM_PERF_EVENT_BLOCK_DESTROY, module1_destroy },
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{ UVM_PERF_EVENT_MODULE_UNLOAD, module1_destroy },
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{ UVM_PERF_EVENT_FAULT, module1_fault },
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};
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uvm_perf_module_event_callback_desc_t module2_callbacks[] = {
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{ UVM_PERF_EVENT_BLOCK_DESTROY, module2_destroy},
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{ UVM_PERF_EVENT_MODULE_UNLOAD, module2_destroy },
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{ UVM_PERF_EVENT_FAULT, module2_fault},
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};
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memset(&event_data, 0, sizeof(event_data));
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// Use CPU id to avoid triggering the GPU stats update code
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event_data.fault.proc_id = UVM_ID_CPU;
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uvm_perf_module_init("module1", module1_type, module1_callbacks, ARRAY_SIZE(module1_callbacks), &module1);
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uvm_perf_module_init("module2", module2_type, module2_callbacks, ARRAY_SIZE(module2_callbacks), &module2);
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// We take va_space write lock during all the test to prevent blocks from disappearing
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uvm_va_space_down_write(va_space);
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status = uvm_perf_module_load(&module1, va_space);
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TEST_CHECK_GOTO(status == NV_OK, fail_space_write_status);
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status = uvm_va_block_find(va_space, addr, &block1);
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TEST_CHECK_GOTO(status == NV_OK, fail_space_write_status);
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status = uvm_va_block_find(va_space, (addr + UVM_VA_BLOCK_SIZE) & ~(UVM_VA_BLOCK_SIZE - 1), &block2);
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TEST_CHECK_GOTO(status == NV_OK, fail_space_write_status);
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// Notify (fake) page fault on block1
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event_data.fault.block = block1;
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uvm_mutex_lock(&block1->lock);
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uvm_perf_event_notify(&va_space->perf_events, UVM_PERF_EVENT_FAULT, &event_data);
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uvm_mutex_unlock(&block1->lock);
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// Notify two (fake) page faults on block2
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event_data.fault.block = block2;
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uvm_mutex_lock(&block2->lock);
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uvm_perf_event_notify(&va_space->perf_events, UVM_PERF_EVENT_FAULT, &event_data);
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uvm_perf_event_notify(&va_space->perf_events, UVM_PERF_EVENT_FAULT, &event_data);
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uvm_mutex_unlock(&block2->lock);
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module1_data = uvm_perf_module_type_data(block1->perf_modules_data, module1.type);
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if (module1_data)
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TEST_CHECK_GOTO((*(module1_data_type_t *) module1_data) == 1, fail_space_write_invalid_state);
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module1_data = uvm_perf_module_type_data(block2->perf_modules_data, module1.type);
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if (module1_data)
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TEST_CHECK_GOTO((*(module1_data_type_t *) module1_data) == 2, fail_space_write_invalid_state);
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uvm_perf_module_unload(&module1, va_space);
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// Module-allocated data must be freed on module unload
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module1_data = uvm_perf_module_type_data(block1->perf_modules_data, module1.type);
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TEST_CHECK_GOTO(module1_data == NULL, fail_space_write_invalid_state);
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module1_data = uvm_perf_module_type_data(block2->perf_modules_data, module1.type);
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TEST_CHECK_GOTO(module1_data == NULL, fail_space_write_invalid_state);
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status = uvm_perf_module_load(&module2, va_space);
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TEST_CHECK_GOTO(status == NV_OK, fail_space_write_status);
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// Notify two (fake) page faults on block1
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event_data.fault.block = block1;
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uvm_mutex_lock(&block1->lock);
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uvm_perf_event_notify(&va_space->perf_events, UVM_PERF_EVENT_FAULT, &event_data);
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uvm_perf_event_notify(&va_space->perf_events, UVM_PERF_EVENT_FAULT, &event_data);
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uvm_mutex_unlock(&block1->lock);
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// Notify (fake) page fault on block2
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event_data.fault.block = block2;
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uvm_mutex_lock(&block2->lock);
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uvm_perf_event_notify(&va_space->perf_events, UVM_PERF_EVENT_FAULT, &event_data);
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uvm_mutex_unlock(&block2->lock);
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module2_data = uvm_perf_module_type_data(block1->perf_modules_data, module2.type);
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if (module2_data) {
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TEST_CHECK_GOTO(((module2_data_type_t *) module2_data)->value[0] == 2, fail_space_write_invalid_state);
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TEST_CHECK_GOTO(((module2_data_type_t *) module2_data)->value[1] == 4, fail_space_write_invalid_state);
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TEST_CHECK_GOTO(((module2_data_type_t *) module2_data)->value[2] == 6, fail_space_write_invalid_state);
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TEST_CHECK_GOTO(((module2_data_type_t *) module2_data)->value[3] == 8, fail_space_write_invalid_state);
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}
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module2_data = uvm_perf_module_type_data(block2->perf_modules_data, module2.type);
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if (module2_data) {
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TEST_CHECK_GOTO(((module2_data_type_t *) module2_data)->value[0] == 1, fail_space_write_invalid_state);
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TEST_CHECK_GOTO(((module2_data_type_t *) module2_data)->value[1] == 2, fail_space_write_invalid_state);
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TEST_CHECK_GOTO(((module2_data_type_t *) module2_data)->value[2] == 3, fail_space_write_invalid_state);
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TEST_CHECK_GOTO(((module2_data_type_t *) module2_data)->value[3] == 4, fail_space_write_invalid_state);
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}
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uvm_perf_module_unload(&module2, va_space);
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// Module-allocated data must be freed on module unload
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module2_data = uvm_perf_module_type_data(block2->perf_modules_data, module2.type);
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TEST_CHECK_GOTO(module2_data == NULL, fail_space_write_invalid_state);
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module2_data = uvm_perf_module_type_data(block2->perf_modules_data, module2.type);
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TEST_CHECK_GOTO(module2_data == NULL, fail_space_write_invalid_state);
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uvm_va_space_up_write(va_space);
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return NV_OK;
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fail_space_write_status:
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uvm_va_space_up_write(va_space);
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return status;
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fail_space_write_invalid_state:
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uvm_va_space_up_write(va_space);
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return NV_ERR_INVALID_STATE;
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}
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NV_STATUS uvm_test_perf_module_sanity(UVM_TEST_PERF_MODULE_SANITY_PARAMS *params, struct file *filp)
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{
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NV_STATUS status;
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uvm_va_space_t *va_space;
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// Two blocks are needed
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if (params->range_size <= UVM_VA_BLOCK_SIZE) {
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status = NV_ERR_INVALID_ARGUMENT;
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goto fail;
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}
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va_space = uvm_va_space_get(filp);
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status = test_module_replace(va_space, params->range_address);
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fail:
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return status;
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}
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