drm: Convert proc files to seq_file and introduce debugfs

The old mechanism to formatting proc files is extremely ugly. The
seq_file API was designed specifically for cases like this and greatly
simplifies the process.

Also, most of the files in /proc really don't belong there. This patch
introduces the infrastructure for putting these into debugfs and exposes
all of the proc files in debugfs as well.

Signed-off-by: Ben Gamari <bgamari@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>

1 files changed, 110 insertions, 611 deletions

diff --git a/drivers/gpu/drm/drm_proc.c b/drivers/gpu/drm/drm_proc.c
index 8df849f66830..9b3c5af61e98 100644
--- a/drivers/gpu/drm/drm_proc.c
+++ b/drivers/gpu/drm/drm_proc.c
@@ -37,697 +37,196 @@
  * OTHER DEALINGS IN THE SOFTWARE.
  */
 
+#include <linux/seq_file.h>
 #include "drmP.h"
 
-static int drm_name_info(char *buf, char **start, off_t offset,
-			 int request, int *eof, void *data);
-static int drm_vm_info(char *buf, char **start, off_t offset,
-		       int request, int *eof, void *data);
-static int drm_clients_info(char *buf, char **start, off_t offset,
-			    int request, int *eof, void *data);
-static int drm_queues_info(char *buf, char **start, off_t offset,
-			   int request, int *eof, void *data);
-static int drm_bufs_info(char *buf, char **start, off_t offset,
-			 int request, int *eof, void *data);
-static int drm_vblank_info(char *buf, char **start, off_t offset,
-			   int request, int *eof, void *data);
-static int drm_gem_name_info(char *buf, char **start, off_t offset,
-			     int request, int *eof, void *data);
-static int drm_gem_object_info(char *buf, char **start, off_t offset,
-			       int request, int *eof, void *data);
-#if DRM_DEBUG_CODE
-static int drm_vma_info(char *buf, char **start, off_t offset,
-			int request, int *eof, void *data);
-#endif
+
+/***************************************************
+ * Initialization, etc.
+ **************************************************/
 
 /**
  * Proc file list.
  */
-static struct drm_proc_list {
-	const char *name;	/**< file name */
-	int (*f) (char *, char **, off_t, int, int *, void *);		/**< proc callback*/
-	u32 driver_features; /**< Required driver features for this entry */
-} drm_proc_list[] = {
+static struct drm_info_list drm_proc_list[] = {
 	{"name", drm_name_info, 0},
-	{"mem", drm_mem_info, 0},
 	{"vm", drm_vm_info, 0},
 	{"clients", drm_clients_info, 0},
 	{"queues", drm_queues_info, 0},
 	{"bufs", drm_bufs_info, 0},
-	{"vblank", drm_vblank_info, 0},
 	{"gem_names", drm_gem_name_info, DRIVER_GEM},
 	{"gem_objects", drm_gem_object_info, DRIVER_GEM},
 #if DRM_DEBUG_CODE
-	{"vma", drm_vma_info},
+	{"vma", drm_vma_info, 0},
 #endif
 };
-
 #define DRM_PROC_ENTRIES ARRAY_SIZE(drm_proc_list)
 
+static int drm_proc_open(struct inode *inode, struct file *file)
+{
+	struct drm_info_node* node = PDE(inode)->data;
+
+	return single_open(file, node->info_ent->show, node);
+}
+
+static const struct file_operations drm_proc_fops = {
+	.owner = THIS_MODULE,
+	.open = drm_proc_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+
 /**
- * Initialize the DRI proc filesystem for a device.
+ * Initialize a given set of proc files for a device
  *
- * \param dev DRM device.
- * \param minor device minor number.
+ * \param files The array of files to create
+ * \param count The number of files given
  * \param root DRI proc dir entry.
- * \param dev_root resulting DRI device proc dir entry.
- * \return root entry pointer on success, or NULL on failure.
+ * \param minor device minor number
+ * \return Zero on success, non-zero on failure
  *
- * Create the DRI proc root entry "/proc/dri", the device proc root entry
- * "/proc/dri/%minor%/", and each entry in proc_list as
- * "/proc/dri/%minor%/%name%".
+ * Create a given set of proc files represented by an array of
+ * gdm_proc_lists in the given root directory.
  */
-int drm_proc_init(struct drm_minor *minor, int minor_id,
-		  struct proc_dir_entry *root)
+int drm_proc_create_files(struct drm_info_list *files, int count,
+			  struct proc_dir_entry *root, struct drm_minor *minor)
 {
 	struct drm_device *dev = minor->dev;
 	struct proc_dir_entry *ent;
-	int i, j, ret;
+	struct drm_info_node *tmp;
 	char name[64];
+	int i, ret;
 
-	sprintf(name, "%d", minor_id);
-	minor->dev_root = proc_mkdir(name, root);
-	if (!minor->dev_root) {
-		DRM_ERROR("Cannot create /proc/dri/%s\n", name);
-		return -1;
-	}
-
-	for (i = 0; i < DRM_PROC_ENTRIES; i++) {
-		u32 features = drm_proc_list[i].driver_features;
+	for (i = 0; i < count; i++) {
+		u32 features = files[i].driver_features;
 
 		if (features != 0 &&
 		    (dev->driver->driver_features & features) != features)
 			continue;
 
-		ent = create_proc_entry(drm_proc_list[i].name,
-					S_IFREG | S_IRUGO, minor->dev_root);
+		tmp = drm_alloc(sizeof(struct drm_info_node), _DRM_DRIVER);
+		ent = create_proc_entry(files[i].name, S_IFREG | S_IRUGO, root);
 		if (!ent) {
 			DRM_ERROR("Cannot create /proc/dri/%s/%s\n",
-				  name, drm_proc_list[i].name);
+				  name, files[i].name);
+			drm_free(tmp, sizeof(struct drm_info_node),
+				 _DRM_DRIVER);
 			ret = -1;
 			goto fail;
 		}
-		ent->read_proc = drm_proc_list[i].f;
-		ent->data = minor;
-	}
 
-	if (dev->driver->proc_init) {
-		ret = dev->driver->proc_init(minor);
-		if (ret) {
-			DRM_ERROR("DRM: Driver failed to initialize "
-				  "/proc/dri.\n");
-			goto fail;
-		}
+		ent->proc_fops = &drm_proc_fops;
+		ent->data = tmp;
+		tmp->minor = minor;
+		tmp->info_ent = &files[i];
+		list_add(&(tmp->list), &(minor->proc_nodes.list));
 	}
-
 	return 0;
- fail:
 
-	for (j = 0; j < i; j++)
-		remove_proc_entry(drm_proc_list[i].name,
-				  minor->dev_root);
-	remove_proc_entry(name, root);
-	minor->dev_root = NULL;
+fail:
+	for (i = 0; i < count; i++)
+		remove_proc_entry(drm_proc_list[i].name, minor->proc_root);
 	return ret;
 }
 
 /**
- * Cleanup the proc filesystem resources.
+ * Initialize the DRI proc filesystem for a device
  *
- * \param minor device minor number.
+ * \param dev DRM device
+ * \param minor device minor number
  * \param root DRI proc dir entry.
- * \param dev_root DRI device proc dir entry.
- * \return always zero.
+ * \param dev_root resulting DRI device proc dir entry.
+ * \return root entry pointer on success, or NULL on failure.
  *
- * Remove all proc entries created by proc_init().
+ * Create the DRI proc root entry "/proc/dri", the device proc root entry
+ * "/proc/dri/%minor%/", and each entry in proc_list as
+ * "/proc/dri/%minor%/%name%".
  */
-int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root)
+int drm_proc_init(struct drm_minor *minor, int minor_id,
+		  struct proc_dir_entry *root)
 {
 	struct drm_device *dev = minor->dev;
-	int i;
 	char name[64];
+	int ret;
 
-	if (!root || !minor->dev_root)
-		return 0;
-
-	if (dev->driver->proc_cleanup)
-		dev->driver->proc_cleanup(minor);
-
-	for (i = 0; i < DRM_PROC_ENTRIES; i++)
-		remove_proc_entry(drm_proc_list[i].name, minor->dev_root);
-	sprintf(name, "%d", minor->index);
-	remove_proc_entry(name, root);
-
-	return 0;
-}
-
-/**
- * Called when "/proc/dri/.../name" is read.
- *
- * \param buf output buffer.
- * \param start start of output data.
- * \param offset requested start offset.
- * \param request requested number of bytes.
- * \param eof whether there is no more data to return.
- * \param data private data.
- * \return number of written bytes.
- *
- * Prints the device name together with the bus id if available.
- */
-static int drm_name_info(char *buf, char **start, off_t offset, int request,
-			 int *eof, void *data)
-{
-	struct drm_minor *minor = (struct drm_minor *) data;
-	struct drm_master *master = minor->master;
-	struct drm_device *dev = minor->dev;
-	int len = 0;
-
-	if (offset > DRM_PROC_LIMIT) {
-		*eof = 1;
-		return 0;
+	INIT_LIST_HEAD(&minor->proc_nodes.list);
+	sprintf(name, "%d", minor_id);
+	minor->proc_root = proc_mkdir(name, root);
+	if (!minor->proc_root) {
+		DRM_ERROR("Cannot create /proc/dri/%s\n", name);
+		return -1;
 	}
 
-	if (!master)
-		return 0;
-
-	*start = &buf[offset];
-	*eof = 0;
-
-	if (master->unique) {
-		DRM_PROC_PRINT("%s %s %s\n",
-			       dev->driver->pci_driver.name,
-			       pci_name(dev->pdev), master->unique);
-	} else {
-		DRM_PROC_PRINT("%s %s\n", dev->driver->pci_driver.name,
-			       pci_name(dev->pdev));
+	ret = drm_proc_create_files(drm_proc_list, DRM_PROC_ENTRIES,
+				    minor->proc_root, minor);
+	if (ret) {
+		remove_proc_entry(name, root);
+		minor->proc_root = NULL;
+		DRM_ERROR("Failed to create core drm proc files\n");
+		return ret;
 	}
 
-	if (len > request + offset)
-		return request;
-	*eof = 1;
-	return len - offset;
-}
-
-/**
- * Called when "/proc/dri/.../vm" is read.
- *
- * \param buf output buffer.
- * \param start start of output data.
- * \param offset requested start offset.
- * \param request requested number of bytes.
- * \param eof whether there is no more data to return.
- * \param data private data.
- * \return number of written bytes.
- *
- * Prints information about all mappings in drm_device::maplist.
- */
-static int drm__vm_info(char *buf, char **start, off_t offset, int request,
-			int *eof, void *data)
-{
-	struct drm_minor *minor = (struct drm_minor *) data;
-	struct drm_device *dev = minor->dev;
-	int len = 0;
-	struct drm_map *map;
-	struct drm_map_list *r_list;
-
-	/* Hardcoded from _DRM_FRAME_BUFFER,
-	   _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and
-	   _DRM_SCATTER_GATHER and _DRM_CONSISTENT */
-	const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" };
-	const char *type;
-	int i;
-
-	if (offset > DRM_PROC_LIMIT) {
-		*eof = 1;
-		return 0;
-	}
-
-	*start = &buf[offset];
-	*eof = 0;
-
-	DRM_PROC_PRINT("slot	 offset	      size type flags	 "
-		       "address mtrr\n\n");
-	i = 0;
-	list_for_each_entry(r_list, &dev->maplist, head) {
-		map = r_list->map;
-		if (!map)
-			continue;
-		if (map->type < 0 || map->type > 5)
-			type = "??";
-		else
-			type = types[map->type];
-		DRM_PROC_PRINT("%4d 0x%08lx 0x%08lx %4.4s  0x%02x 0x%08lx ",
-			       i,
-			       map->offset,
-			       map->size, type, map->flags,
-			       (unsigned long) r_list->user_token);
-		if (map->mtrr < 0) {
-			DRM_PROC_PRINT("none\n");
-		} else {
-			DRM_PROC_PRINT("%4d\n", map->mtrr);
+	if (dev->driver->proc_init) {
+		ret = dev->driver->proc_init(minor);
+		if (ret) {
+			DRM_ERROR("DRM: Driver failed to initialize "
+				  "/proc/dri.\n");
+			return ret;
 		}
-		i++;
-	}
-
-	if (len > request + offset)
-		return request;
-	*eof = 1;
-	return len - offset;
-}
-
-/**
- * Simply calls _vm_info() while holding the drm_device::struct_mutex lock.
- */
-static int drm_vm_info(char *buf, char **start, off_t offset, int request,
-		       int *eof, void *data)
-{
-	struct drm_minor *minor = (struct drm_minor *) data;
-	struct drm_device *dev = minor->dev;
-	int ret;
-
-	mutex_lock(&dev->struct_mutex);
-	ret = drm__vm_info(buf, start, offset, request, eof, data);
-	mutex_unlock(&dev->struct_mutex);
-	return ret;
-}
-
-/**
- * Called when "/proc/dri/.../queues" is read.
- *
- * \param buf output buffer.
- * \param start start of output data.
- * \param offset requested start offset.
- * \param request requested number of bytes.
- * \param eof whether there is no more data to return.
- * \param data private data.
- * \return number of written bytes.
- */
-static int drm__queues_info(char *buf, char **start, off_t offset,
-			    int request, int *eof, void *data)
-{
-	struct drm_minor *minor = (struct drm_minor *) data;
-	struct drm_device *dev = minor->dev;
-	int len = 0;
-	int i;
-	struct drm_queue *q;
-
-	if (offset > DRM_PROC_LIMIT) {
-		*eof = 1;
-		return 0;
 	}
-
-	*start = &buf[offset];
-	*eof = 0;
-
-	DRM_PROC_PRINT("  ctx/flags   use   fin"
-		       "   blk/rw/rwf  wait    flushed	   queued"
-		       "      locks\n\n");
-	for (i = 0; i < dev->queue_count; i++) {
-		q = dev->queuelist[i];
-		atomic_inc(&q->use_count);
-		DRM_PROC_PRINT_RET(atomic_dec(&q->use_count),
-				   "%5d/0x%03x %5d %5d"
-				   " %5d/%c%c/%c%c%c %5Zd\n",
-				   i,
-				   q->flags,
-				   atomic_read(&q->use_count),
-				   atomic_read(&q->finalization),
-				   atomic_read(&q->block_count),
-				   atomic_read(&q->block_read) ? 'r' : '-',
-				   atomic_read(&q->block_write) ? 'w' : '-',
-				   waitqueue_active(&q->read_queue) ? 'r' : '-',
-				   waitqueue_active(&q->
-						    write_queue) ? 'w' : '-',
-				   waitqueue_active(&q->
-						    flush_queue) ? 'f' : '-',
-				   DRM_BUFCOUNT(&q->waitlist));
-		atomic_dec(&q->use_count);
-	}
-
-	if (len > request + offset)
-		return request;
-	*eof = 1;
-	return len - offset;
-}
-
-/**
- * Simply calls _queues_info() while holding the drm_device::struct_mutex lock.
- */
-static int drm_queues_info(char *buf, char **start, off_t offset, int request,
-			   int *eof, void *data)
-{
-	struct drm_minor *minor = (struct drm_minor *) data;
-	struct drm_device *dev = minor->dev;
-	int ret;
-
-	mutex_lock(&dev->struct_mutex);
-	ret = drm__queues_info(buf, start, offset, request, eof, data);
-	mutex_unlock(&dev->struct_mutex);
-	return ret;
+	return 0;
 }
 
-/**
- * Called when "/proc/dri/.../bufs" is read.
- *
- * \param buf output buffer.
- * \param start start of output data.
- * \param offset requested start offset.
- * \param request requested number of bytes.
- * \param eof whether there is no more data to return.
- * \param data private data.
- * \return number of written bytes.
- */
-static int drm__bufs_info(char *buf, char **start, off_t offset, int request,
-			  int *eof, void *data)
+int drm_proc_remove_files(struct drm_info_list *files, int count,
+			  struct drm_minor *minor)
 {
-	struct drm_minor *minor = (struct drm_minor *) data;
-	struct drm_device *dev = minor->dev;
-	int len = 0;
-	struct drm_device_dma *dma = dev->dma;
+	struct list_head *pos, *q;
+	struct drm_info_node *tmp;
 	int i;
 
-	if (!dma || offset > DRM_PROC_LIMIT) {
-		*eof = 1;
-		return 0;
-	}
-
-	*start = &buf[offset];
-	*eof = 0;
-
-	DRM_PROC_PRINT(" o     size count  free	 segs pages    kB\n\n");
-	for (i = 0; i <= DRM_MAX_ORDER; i++) {
-		if (dma->bufs[i].buf_count)
-			DRM_PROC_PRINT("%2d %8d %5d %5d %5d %5d %5ld\n",
-				       i,
-				       dma->bufs[i].buf_size,
-				       dma->bufs[i].buf_count,
-				       atomic_read(&dma->bufs[i]
-						   .freelist.count),
-				       dma->bufs[i].seg_count,
-				       dma->bufs[i].seg_count
-				       * (1 << dma->bufs[i].page_order),
-				       (dma->bufs[i].seg_count
-					* (1 << dma->bufs[i].page_order))
-				       * PAGE_SIZE / 1024);
-	}
-	DRM_PROC_PRINT("\n");
-	for (i = 0; i < dma->buf_count; i++) {
-		if (i && !(i % 32))
-			DRM_PROC_PRINT("\n");
-		DRM_PROC_PRINT(" %d", dma->buflist[i]->list);
+	for (i = 0; i < count; i++) {
+		list_for_each_safe(pos, q, &minor->proc_nodes.list) {
+			tmp = list_entry(pos, struct drm_info_node, list);
+			if (tmp->info_ent == &files[i]) {
+				remove_proc_entry(files[i].name,
+						  minor->proc_root);
+				list_del(pos);
+				drm_free(tmp, sizeof(struct drm_info_node),
+					 _DRM_DRIVER);
+			}
+		}
 	}
-	DRM_PROC_PRINT("\n");
-
-	if (len > request + offset)
-		return request;
-	*eof = 1;
-	return len - offset;
-}
-
-/**
- * Simply calls _bufs_info() while holding the drm_device::struct_mutex lock.
- */
-static int drm_bufs_info(char *buf, char **start, off_t offset, int request,
-			 int *eof, void *data)
-{
-	struct drm_minor *minor = (struct drm_minor *) data;
-	struct drm_device *dev = minor->dev;
-	int ret;
-
-	mutex_lock(&dev->struct_mutex);
-	ret = drm__bufs_info(buf, start, offset, request, eof, data);
-	mutex_unlock(&dev->struct_mutex);
-	return ret;
+	return 0;
 }
 
 /**
- * Called when "/proc/dri/.../vblank" is read.
+ * Cleanup the proc filesystem resources.
  *
- * \param buf output buffer.
- * \param start start of output data.
- * \param offset requested start offset.
- * \param request requested number of bytes.
- * \param eof whether there is no more data to return.
- * \param data private data.
- * \return number of written bytes.
- */
-static int drm__vblank_info(char *buf, char **start, off_t offset, int request,
-			  int *eof, void *data)
-{
-	struct drm_minor *minor = (struct drm_minor *) data;
-	struct drm_device *dev = minor->dev;
-	int len = 0;
-	int crtc;
-
-	if (offset > DRM_PROC_LIMIT) {
-		*eof = 1;
-		return 0;
-	}
-
-	*start = &buf[offset];
-	*eof = 0;
-
-	for (crtc = 0; crtc < dev->num_crtcs; crtc++) {
-		DRM_PROC_PRINT("CRTC %d enable:     %d\n",
-			       crtc, atomic_read(&dev->vblank_refcount[crtc]));
-		DRM_PROC_PRINT("CRTC %d counter:    %d\n",
-			       crtc, drm_vblank_count(dev, crtc));
-		DRM_PROC_PRINT("CRTC %d last wait:  %d\n",
-			       crtc, dev->last_vblank_wait[crtc]);
-		DRM_PROC_PRINT("CRTC %d in modeset: %d\n",
-			       crtc, dev->vblank_inmodeset[crtc]);
-	}
-
-	if (len > request + offset)
-		return request;
-	*eof = 1;
-	return len - offset;
-}
-
-/**
- * Simply calls _vblank_info() while holding the drm_device::struct_mutex lock.
- */
-static int drm_vblank_info(char *buf, char **start, off_t offset, int request,
-			 int *eof, void *data)
-{
-	struct drm_minor *minor = (struct drm_minor *) data;
-	struct drm_device *dev = minor->dev;
-	int ret;
-
-	mutex_lock(&dev->struct_mutex);
-	ret = drm__vblank_info(buf, start, offset, request, eof, data);
-	mutex_unlock(&dev->struct_mutex);
-	return ret;
-}
-
-/**
- * Called when "/proc/dri/.../clients" is read.
+ * \param minor device minor number.
+ * \param root DRI proc dir entry.
+ * \param dev_root DRI device proc dir entry.
+ * \return always zero.
  *
- * \param buf output buffer.
- * \param start start of output data.
- * \param offset requested start offset.
- * \param request requested number of bytes.
- * \param eof whether there is no more data to return.
- * \param data private data.
- * \return number of written bytes.
+ * Remove all proc entries created by proc_init().
  */
-static int drm__clients_info(char *buf, char **start, off_t offset,
-			     int request, int *eof, void *data)
+int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root)
 {
-	struct drm_minor *minor = (struct drm_minor *) data;
 	struct drm_device *dev = minor->dev;
-	int len = 0;
-	struct drm_file *priv;
+	char name[64];
 
-	if (offset > DRM_PROC_LIMIT) {
-		*eof = 1;
+	if (!root || !minor->proc_root)
 		return 0;
-	}
-
-	*start = &buf[offset];
-	*eof = 0;
-
-	DRM_PROC_PRINT("a dev	pid    uid	magic	  ioctls\n\n");
-	list_for_each_entry(priv, &dev->filelist, lhead) {
-		DRM_PROC_PRINT("%c %3d %5d %5d %10u %10lu\n",
-			       priv->authenticated ? 'y' : 'n',
-			       priv->minor->index,
-			       priv->pid,
-			       priv->uid, priv->magic, priv->ioctl_count);
-	}
 
-	if (len > request + offset)
-		return request;
-	*eof = 1;
-	return len - offset;
-}
-
-/**
- * Simply calls _clients_info() while holding the drm_device::struct_mutex lock.
- */
-static int drm_clients_info(char *buf, char **start, off_t offset,
-			    int request, int *eof, void *data)
-{
-	struct drm_minor *minor = (struct drm_minor *) data;
-	struct drm_device *dev = minor->dev;
-	int ret;
-
-	mutex_lock(&dev->struct_mutex);
-	ret = drm__clients_info(buf, start, offset, request, eof, data);
-	mutex_unlock(&dev->struct_mutex);
-	return ret;
-}
-
-struct drm_gem_name_info_data {
-       int                     len;
-       char                    *buf;
-       int                     eof;
-};
+	if (dev->driver->proc_cleanup)
+		dev->driver->proc_cleanup(minor);
 
-static int drm_gem_one_name_info(int id, void *ptr, void *data)
-{
-	struct drm_gem_object *obj = ptr;
-	struct drm_gem_name_info_data   *nid = data;
+	drm_proc_remove_files(drm_proc_list, DRM_PROC_ENTRIES, minor);
 
-	DRM_INFO("name %d size %zd\n", obj->name, obj->size);
-	if (nid->eof)
-		return 0;
+	sprintf(name, "%d", minor->index);
+	remove_proc_entry(name, root);
 
-	nid->len += sprintf(&nid->buf[nid->len],
-			    "%6d %8zd %7d %8d\n",
-			    obj->name, obj->size,
-			    atomic_read(&obj->handlecount.refcount),
-			    atomic_read(&obj->refcount.refcount));
-	if (nid->len > DRM_PROC_LIMIT) {
-		nid->eof = 1;
-		return 0;
-	}
 	return 0;
 }
 
-static int drm_gem_name_info(char *buf, char **start, off_t offset,
-			     int request, int *eof, void *data)
-{
-	struct drm_minor *minor = (struct drm_minor *) data;
-	struct drm_device *dev = minor->dev;
-	struct drm_gem_name_info_data nid;
-
-	if (offset > DRM_PROC_LIMIT) {
-		*eof = 1;
-		return 0;
-	}
-
-	nid.len = sprintf(buf, "  name     size handles refcount\n");
-	nid.buf = buf;
-	nid.eof = 0;
-	idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, &nid);
-
-	*start = &buf[offset];
-	*eof = 0;
-	if (nid.len > request + offset)
-		return request;
-	*eof = 1;
-	return nid.len - offset;
-}
-
-static int drm_gem_object_info(char *buf, char **start, off_t offset,
-			       int request, int *eof, void *data)
-{
-	struct drm_minor *minor = (struct drm_minor *) data;
-	struct drm_device *dev = minor->dev;
-	int len = 0;
-
-	if (offset > DRM_PROC_LIMIT) {
-		*eof = 1;
-		return 0;
-	}
-
-	*start = &buf[offset];
-	*eof = 0;
-	DRM_PROC_PRINT("%d objects\n", atomic_read(&dev->object_count));
-	DRM_PROC_PRINT("%d object bytes\n", atomic_read(&dev->object_memory));
-	DRM_PROC_PRINT("%d pinned\n", atomic_read(&dev->pin_count));
-	DRM_PROC_PRINT("%d pin bytes\n", atomic_read(&dev->pin_memory));
-	DRM_PROC_PRINT("%d gtt bytes\n", atomic_read(&dev->gtt_memory));
-	DRM_PROC_PRINT("%d gtt total\n", dev->gtt_total);
-	if (len > request + offset)
-		return request;
-	*eof = 1;
-	return len - offset;
-}
-
-#if DRM_DEBUG_CODE
-
-static int drm__vma_info(char *buf, char **start, off_t offset, int request,
-			 int *eof, void *data)
-{
-	struct drm_minor *minor = (struct drm_minor *) data;
-	struct drm_device *dev = minor->dev;
-	int len = 0;
-	struct drm_vma_entry *pt;
-	struct vm_area_struct *vma;
-#if defined(__i386__)
-	unsigned int pgprot;
-#endif
-
-	if (offset > DRM_PROC_LIMIT) {
-		*eof = 1;
-		return 0;
-	}
-
-	*start = &buf[offset];
-	*eof = 0;
-
-	DRM_PROC_PRINT("vma use count: %d, high_memory = %p, 0x%08lx\n",
-		       atomic_read(&dev->vma_count),
-		       high_memory, virt_to_phys(high_memory));
-	list_for_each_entry(pt, &dev->vmalist, head) {
-		if (!(vma = pt->vma))
-			continue;
-		DRM_PROC_PRINT("\n%5d 0x%08lx-0x%08lx %c%c%c%c%c%c 0x%08lx000",
-			       pt->pid,
-			       vma->vm_start,
-			       vma->vm_end,
-			       vma->vm_flags & VM_READ ? 'r' : '-',
-			       vma->vm_flags & VM_WRITE ? 'w' : '-',
-			       vma->vm_flags & VM_EXEC ? 'x' : '-',
-			       vma->vm_flags & VM_MAYSHARE ? 's' : 'p',
-			       vma->vm_flags & VM_LOCKED ? 'l' : '-',
-			       vma->vm_flags & VM_IO ? 'i' : '-',
-			       vma->vm_pgoff);
-
-#if defined(__i386__)
-		pgprot = pgprot_val(vma->vm_page_prot);
-		DRM_PROC_PRINT(" %c%c%c%c%c%c%c%c%c",
-			       pgprot & _PAGE_PRESENT ? 'p' : '-',
-			       pgprot & _PAGE_RW ? 'w' : 'r',
-			       pgprot & _PAGE_USER ? 'u' : 's',
-			       pgprot & _PAGE_PWT ? 't' : 'b',
-			       pgprot & _PAGE_PCD ? 'u' : 'c',
-			       pgprot & _PAGE_ACCESSED ? 'a' : '-',
-			       pgprot & _PAGE_DIRTY ? 'd' : '-',
-			       pgprot & _PAGE_PSE ? 'm' : 'k',
-			       pgprot & _PAGE_GLOBAL ? 'g' : 'l');
-#endif
-		DRM_PROC_PRINT("\n");
-	}
-
-	if (len > request + offset)
-		return request;
-	*eof = 1;
-	return len - offset;
-}
-
-static int drm_vma_info(char *buf, char **start, off_t offset, int request,
-			int *eof, void *data)
-{
-	struct drm_minor *minor = (struct drm_minor *) data;
-	struct drm_device *dev = minor->dev;
-	int ret;
-
-	mutex_lock(&dev->struct_mutex);
-	ret = drm__vma_info(buf, start, offset, request, eof, data);
-	mutex_unlock(&dev->struct_mutex);
-	return ret;
-}
-#endif