From: Jin-young Jeon <jy0.jeon@samsung.com>
Date: Mon, 22 May 2017 08:34:05 +0000 (+0900)
Subject: drm/tgm: add pid information on gem_info
X-Git-Tag: submit/tizen/20170710.052339~14
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=23ebe60e24553798c6cc8b5c8e506d228c198448;p=profile%2Fwearable%2Fplatform%2Fkernel%2Flinux-3.18-exynos7270.git

drm/tgm: add pid information on gem_info

This patch is from product kernel.

Change-Id: Id408cab17ca339bb2d8c8af1193a7905f2a34869
Signed-off-by: Jin-young Jeon <jy0.jeon@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
---

diff --git a/drivers/gpu/drm/tgm/tbm_gem.c b/drivers/gpu/drm/tgm/tbm_gem.c
index 9aa6a3ce914..0804821b1d9 100644
--- a/drivers/gpu/drm/tgm/tbm_gem.c
+++ b/drivers/gpu/drm/tgm/tbm_gem.c
@@ -127,6 +127,25 @@ void tbm_fini_buf(struct drm_device *dev,
 	buffer = NULL;
 }
 
+static void tbm_gem_register_pid(struct drm_file *file_priv)
+{
+	struct tgm_drv_file_private *driver_priv = file_priv->driver_priv;
+
+	if (!driver_priv->pid && !driver_priv->tgid) {
+		driver_priv->pid = task_pid_nr(current);
+		driver_priv->tgid = task_tgid_nr(current);
+	} else {
+		if (driver_priv->pid != task_pid_nr(current))
+			DRM_DEBUG_KMS("wrong pid: %ld, %ld\n",
+					(unsigned long)driver_priv->pid,
+					(unsigned long)task_pid_nr(current));
+		if (driver_priv->tgid != task_tgid_nr(current))
+			DRM_DEBUG_KMS("wrong tgid: %ld, %ld\n",
+					(unsigned long)driver_priv->tgid,
+					(unsigned long)task_tgid_nr(current));
+	}
+}
+
 struct tbm_gem_object *tbm_gem_create_obj(struct drm_device *dev,
 						unsigned int flags,
 						unsigned long size)
@@ -248,6 +267,8 @@ int tbm_gem_create_ioctl(struct drm_device *dev, void *data,
 		return ret;
 	}
 
+	tbm_gem_register_pid(file_priv);
+
 #ifdef GEM_DEBUG_LOG
 	gem_save_info(GEM_CREATE, obj);
 #endif
@@ -402,6 +423,22 @@ int tbm_gem_get_ioctl(struct drm_device *dev, void *data,
 	return 0;
 }
 
+int tbm_gem_prime_fd_to_handle(struct drm_device *dev,
+		struct drm_file *file_priv, int prime_fd, uint32_t *handle)
+{
+	int ret;
+
+	ret = drm_gem_prime_fd_to_handle(dev, file_priv, prime_fd, handle);
+	if (ret < 0)
+		goto out;
+
+	tbm_gem_register_pid(file_priv);
+
+out:
+	return ret;
+}
+
+
 int tbm_gem_cpu_prep_ioctl(struct drm_device *dev, void *data,
 				  struct drm_file *file)
 {
@@ -696,6 +733,8 @@ static int tbm_gem_dumb_destroy(struct drm_file *file_priv,
 	 */
 	ret = drm_gem_handle_delete(file_priv, handle);
 
+	tbm_gem_register_pid(file_priv);
+
 	DRM_INFO("%s:h[%d]ret[%d]\n", __func__, handle, ret);
 
 	return ret;
@@ -705,7 +744,6 @@ static int tbm_gem_one_info(int id, void *ptr, void *data)
 {
 	struct drm_gem_object *obj = (struct drm_gem_object *)ptr;
 	struct tbm_gem_info_data *gem_info_data = data;
-	struct pid *pid = gem_info_data->filp->pid;
 	struct tgm_drv_file_private *file_priv =
 			gem_info_data->filp->driver_priv;
 	struct tbm_gem_object *tbm_gem_obj;
@@ -724,7 +762,7 @@ static int tbm_gem_one_info(int id, void *ptr, void *data)
 	seq_printf(gem_info_data->m,
 			"%5d\t%5d\t%4d\t%4d\t\t%4d\t0x%08lx\t0x%x\t%4d\t%4d\t\t"
 			"%4d\t\t0x%p\t%6d\n",
-				pid_nr(pid),
+				file_priv->pid,
 				file_priv->tgid,
 				id,
 				atomic_read(&obj->refcount.refcount) - 1,
@@ -784,7 +822,7 @@ int tbm_gem_init(struct drm_device *drm_dev)
 	drm_drv->dumb_map_offset = tbm_gem_dumb_map_offset;
 	drm_drv->dumb_destroy = tbm_gem_dumb_destroy;
 	drm_drv->prime_handle_to_fd = drm_gem_prime_handle_to_fd,
-	drm_drv->prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+	drm_drv->prime_fd_to_handle = tbm_gem_prime_fd_to_handle,
 #ifdef CONFIG_DRM_DMA_SYNC
 	tbm_priv->gem_fence_context = fence_context_alloc(1);
 	atomic_set(&tbm_priv->gem_fence_seqno, 0);
diff --git a/drivers/gpu/drm/tgm/tbm_gem.h b/drivers/gpu/drm/tgm/tbm_gem.h
index f63258c6894..aecaef92f2d 100644
--- a/drivers/gpu/drm/tgm/tbm_gem.h
+++ b/drivers/gpu/drm/tgm/tbm_gem.h
@@ -57,6 +57,8 @@ int tbm_gem_get_ioctl(struct drm_device *dev, void *data,
 				      struct drm_file *file_priv);
 int tbm_gem_info(struct seq_file *m, void *data);
 int tbm_gem_init(struct drm_device *drm_dev);
+int tbm_gem_prime_fd_to_handle(struct drm_device *dev,
+		struct drm_file *file_priv, int prime_fd, uint32_t *handle);
 int tbm_gem_cpu_prep_ioctl(struct drm_device *dev, void *data,
 				  struct drm_file *file);
 int tbm_gem_cpu_fini_ioctl(struct drm_device *dev, void *data,
diff --git a/drivers/gpu/drm/tgm/tgm_drv.c b/drivers/gpu/drm/tgm/tgm_drv.c
index 719342b712c..2053b00cb47 100644
--- a/drivers/gpu/drm/tgm/tgm_drv.c
+++ b/drivers/gpu/drm/tgm/tgm_drv.c
@@ -92,7 +92,6 @@ static int tgm_drv_open(struct drm_device *dev, struct drm_file *file)
 	if (!file_priv)
 		return -ENOMEM;
 
-	file_priv->tgid = task_tgid_nr(current);
 	file->driver_priv = file_priv;
 
 	return 0;
diff --git a/drivers/gpu/drm/tgm/tgm_drv.h b/drivers/gpu/drm/tgm/tgm_drv.h
index 753433f259f..5af11712b57 100644
--- a/drivers/gpu/drm/tgm/tgm_drv.h
+++ b/drivers/gpu/drm/tgm/tgm_drv.h
@@ -29,6 +29,7 @@ struct tgm_drv_private {
 };
 
 struct tgm_drv_file_private {
+	pid_t pid;
 	pid_t tgid;
 };