Open source GPL/LGPL release

drivers/gpu/nvgpu/os/linux/cond.c

@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2017, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/wait.h>
+#include <linux/sched.h>
+
+#include <nvgpu/cond.h>
+
+int nvgpu_cond_init(struct nvgpu_cond *cond)
+{
+	init_waitqueue_head(&cond->wq);
+	cond->initialized = true;
+
+	return 0;
+}
+
+void nvgpu_cond_destroy(struct nvgpu_cond *cond)
+{
+	cond->initialized = false;
+}
+
+void nvgpu_cond_signal(struct nvgpu_cond *cond)
+{
+	BUG_ON(!cond->initialized);
+
+	wake_up(&cond->wq);
+}
+
+void nvgpu_cond_signal_interruptible(struct nvgpu_cond *cond)
+{
+	BUG_ON(!cond->initialized);
+
+	wake_up_interruptible(&cond->wq);
+}
+
+int nvgpu_cond_broadcast(struct nvgpu_cond *cond)
+{
+	if (!cond->initialized)
+		return -EINVAL;
+
+	wake_up_all(&cond->wq);
+
+	return 0;
+}
+
+int nvgpu_cond_broadcast_interruptible(struct nvgpu_cond *cond)
+{
+	if (!cond->initialized)
+		return -EINVAL;
+
+	wake_up_interruptible_all(&cond->wq);
+
+	return 0;
+}