From 3d9b7847d971ba405bf5459fd01bf60ae694300a Mon Sep 17 00:00:00 2001
From: Terje Bergstrom <tbergstrom@nvidia.com>
Date: Tue, 25 Apr 2017 09:44:39 -0700
Subject: gpu: nvgpu: Use nvgpu_thread for VGPU interrupts

Use nvgpu_thread for launching the thread for polling VGPU interrupts.

JIRA NVGPU-14

Change-Id: I7114336bb37c407ee7365c4442e1826d80575771
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1469650
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
---
 drivers/gpu/nvgpu/vgpu/vgpu.c | 13 +++++++------
 drivers/gpu/nvgpu/vgpu/vgpu.h |  4 +++-
 2 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/nvgpu/vgpu/vgpu.c b/drivers/gpu/nvgpu/vgpu/vgpu.c
index eb221d01..7e012fb0 100644
--- a/drivers/gpu/nvgpu/vgpu/vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/vgpu.c
@@ -13,7 +13,6 @@
  * more details.
  */
 
-#include <linux/kthread.h>
 #include <linux/delay.h>
 #include <linux/dma-mapping.h>
 #include <linux/pm_runtime.h>
@@ -134,6 +133,7 @@ static void vgpu_handle_channel_event(struct gk20a *g,
 static int vgpu_intr_thread(void *dev_id)
 {
 	struct gk20a *g = dev_id;
+	struct vgpu_priv_data *priv = vgpu_get_priv_data(g);
 
 	while (true) {
 		struct tegra_vgpu_intr_msg *msg;
@@ -188,7 +188,7 @@ static int vgpu_intr_thread(void *dev_id)
 		tegra_gr_comm_release(handle);
 	}
 
-	while (!kthread_should_stop())
+	while (!nvgpu_thread_should_stop(&priv->intr_handler))
 		msleep(10);
 	return 0;
 }
@@ -219,7 +219,7 @@ static void vgpu_remove_support(struct gk20a *g)
 				TEGRA_GR_COMM_ID_SELF, TEGRA_VGPU_QUEUE_INTR,
 				&msg, sizeof(msg));
 	WARN_ON(err);
-	kthread_stop(priv->intr_handler);
+	nvgpu_thread_stop(&priv->intr_handler);
 
 	/* free mappings to registers, etc*/
 
@@ -650,9 +650,10 @@ int vgpu_probe(struct platform_device *pdev)
 		return err;
 	}
 
-	priv->intr_handler = kthread_run(vgpu_intr_thread, gk20a, "gk20a");
-	if (IS_ERR(priv->intr_handler))
-		return -ENOMEM;
+	err = nvgpu_thread_create(&priv->intr_handler, gk20a,
+			vgpu_intr_thread, "gk20a");
+	if (err)
+		return err;
 
 	gk20a_debug_init(dev, "gpu.0");
 
diff --git a/drivers/gpu/nvgpu/vgpu/vgpu.h b/drivers/gpu/nvgpu/vgpu/vgpu.h
index 7883abc1..ac261979 100644
--- a/drivers/gpu/nvgpu/vgpu/vgpu.h
+++ b/drivers/gpu/nvgpu/vgpu/vgpu.h
@@ -20,11 +20,13 @@
 #include <linux/tegra_vgpu.h>
 #include "gk20a/gk20a.h"
 
+#include <nvgpu/thread.h>
+
 #ifdef CONFIG_TEGRA_GR_VIRTUALIZATION
 
 struct vgpu_priv_data {
 	u64 virt_handle;
-	struct task_struct *intr_handler;
+	struct nvgpu_thread intr_handler;
 	struct tegra_vgpu_constants_params constants;
 };
 
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