gpu: nvgpu: add UT for os_sched

Add unit tests for posix os_sched unit.

Jira NVGPU-2689

Change-Id: Ideaf6ad8a0b2419efbe4e8960afa46a30f9f0e7a
Signed-off-by: ajesh <akv@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2215620
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

userspace/units/posix/os_sched/posix-ossched.h

@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2019, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * 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.
+ */
+
+/**
+ * @addtogroup SWUTS-posix-ossched
+ * @{
+ *
+ * Software Unit Test Specification for posix-ossched
+ */
+
+#ifndef __UNIT_POSIX_OSSCHED_H__
+#define __UNIT_POSIX_OSSCHED_H__
+
+#include <nvgpu/os_sched.h>
+
+/**
+ * Test specification for test_current_pid
+ *
+ * Description: Test the PID of the current process.
+ *
+ * Test Type: Feature based.
+ *
+ * Inputs:
+ *
+ * Steps:
+ * 1) Get the PID of the current process using standard lib call.
+ * 2) Get the PID of the current process using NVGPU API.
+ * 3) Compare the PIDs obtained in step 1 and 2.
+ * 4) Return Fail if the PIDs dont match.
+ *
+ * Output:
+ * Return PASS if the PIDs fetched using standard library call and NVGPU API
+ * matches; otherwise, the test returns FAIL.
+ */
+int test_current_pid(struct unit_module *m,
+			struct gk20a *g, void *args);
+
+/**
+ * Test specification for test_current_tid
+ *
+ * Description: Test the TID of the current thread.
+ *
+ * Test Type: Feature based.
+ *
+ * Inputs:
+ *
+ * Steps:
+ * 1) Get the TID of the current thread using standard lib call.
+ * 2) Get the TID of the current thread using NVGPU API.
+ * 3) Compare the TIDs obtained in step 1 and 2.
+ * 4) Return Fail if the TIDs dont match.
+ *
+ * Output:
+ * Return PASS if the TIDs fetched using standard library call and NVGPU API
+ * matches; otherwise, the test returns FAIL.
+ */
+int test_current_tid(struct unit_module *m,
+			struct gk20a *g, void *args);
+
+/**
+ * Test specification for test_print_current
+ *
+ * Description: Print the current thread name.
+ *
+ * Test Type: Feature based.
+ *
+ * Inputs:
+ *
+ * Steps:
+ * 1) Print the current thread name with log type NVGPU_INFO
+ * 2) Print the current thread name with log type NVGPU_DEBUG
+ * 3) Print the current thread name with log type NVGPU_WARNING
+ * 4) Print the current thread name with log type NVGPU_ERROR
+ * 5) Print the current thread name with invalid log type which should result
+ * in the function using default log type.
+ *
+ * Output:
+ * The test returns PASS if all the print calls gets executed without any
+ * crash/hang.  Since the function does not return any value, the only case
+ * in which the test can fail is due to an internal hang or crash.
+ */
+int test_print_current(struct unit_module *m,
+			struct gk20a *g, void *args);
+#endif /* __UNIT_POSIX_OSSCHED_H__ */