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.c

@@ -0,0 +1,81 @@
+/*
+ * 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.
+ */
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <pthread.h>
+
+#include <unit/io.h>
+#include <unit/unit.h>
+
+#include "posix-ossched.h"
+
+int test_current_pid(struct unit_module *m,
+			struct gk20a *g, void *args)
+{
+	int pid;
+	int nvgpu_pid;
+
+	pid = (int) getpid();
+	nvgpu_pid = nvgpu_current_pid(g);
+
+	if (nvgpu_pid != pid) {
+		unit_return_fail(m, "PID mismatch %d %d\n", pid, nvgpu_pid);
+	}
+
+	return UNIT_SUCCESS;
+}
+
+int test_current_tid(struct unit_module *m,
+			struct gk20a *g, void *args)
+{
+	int tid;
+	int nvgpu_tid;
+
+	tid = (int) pthread_self();
+	nvgpu_tid = nvgpu_current_tid(g);
+
+	if (nvgpu_tid != tid) {
+		unit_return_fail(m, "TID mismatch %d %d\n", tid, nvgpu_tid);
+	}
+
+	return UNIT_SUCCESS;
+}
+
+int test_print_current(struct unit_module *m,
+			struct gk20a *g, void *args)
+{
+	nvgpu_print_current(g, NULL, NVGPU_INFO);
+	nvgpu_print_current(g, NULL, NVGPU_DEBUG);
+	nvgpu_print_current(g, NULL, NVGPU_WARNING);
+	nvgpu_print_current(g, NULL, NVGPU_ERROR);
+	nvgpu_print_current(g, NULL, 10);
+
+	return UNIT_SUCCESS;
+}
+struct unit_module_test posix_ossched_tests[] = {
+	UNIT_TEST(current_pid,    test_current_pid, NULL, 0),
+	UNIT_TEST(current_tid,    test_current_tid, NULL, 0),
+	UNIT_TEST(print_current,  test_print_current, NULL, 0),
+};
+
+UNIT_MODULE(posix_ossched, posix_ossched_tests, UNIT_PRIO_POSIX_TEST);