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List:       linux-virtualization
Subject:    [PATCH] virtgpu: remove redundant task_comm copying
From:       Michał Mirosław <mirq-linux () rere ! qmqm ! pl>
Date:       2017-08-31 18:06:12
Message-ID: 588612bbc672e8b598e10f79fcbc041122e844ba.1504202471.git.mirq-linux () rere ! qmqm ! pl
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Remove redundant task name copying because:

1. task->comm is already NUL-terminated
2. virtio_gpu_context_create() trims passed dbgname anyway

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
---
 drivers/gpu/drm/virtio/virtgpu_kms.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c
index 1e1c90b30d4a..6f5c4a8c0ba8 100644
--- a/drivers/gpu/drm/virtio/virtgpu_kms.c
+++ b/drivers/gpu/drm/virtio/virtgpu_kms.c
@@ -272,20 +272,18 @@ int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file)
 	struct virtio_gpu_device *vgdev = dev->dev_private;
 	struct virtio_gpu_fpriv *vfpriv;
 	uint32_t id;
-	char dbgname[64], tmpname[TASK_COMM_LEN];
+	char dbgname[TASK_COMM_LEN];
 
 	/* can't create contexts without 3d renderer */
 	if (!vgdev->has_virgl_3d)
 		return 0;
 
-	get_task_comm(tmpname, current);
-	snprintf(dbgname, sizeof(dbgname), "%s", tmpname);
-	dbgname[63] = 0;
 	/* allocate a virt GPU context for this opener */
 	vfpriv = kzalloc(sizeof(*vfpriv), GFP_KERNEL);
 	if (!vfpriv)
 		return -ENOMEM;
 
+	get_task_comm(dbgname, current);
 	virtio_gpu_context_create(vgdev, strlen(dbgname), dbgname, &id);
 
 	vfpriv->ctx_id = id;
-- 
2.11.0

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