From ab3549d1336fc6c08581a9fd14a83513649d9187 Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Fri, 2 May 2008 16:34:16 -0700
Subject: Add a bit of /proc/dri/*/gem support. Clean up some refcount/pagelock
 issues.

Track named objects in /proc/dri/0/gem_names.
Track total object count in /proc/dri/0/gem_objects.
Initialize device gem data.
return -ENODEV for gem ioctls if the driver doesn't support gem.
Call unlock_page when unbinding from gtt.
Add numerous misssing calls to drm_gem_object_unreference.
---
 linux-core/drm_proc.c | 79 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)

(limited to 'linux-core/drm_proc.c')

diff --git a/linux-core/drm_proc.c b/linux-core/drm_proc.c
index 42da5c69..b1b976b2 100644
--- a/linux-core/drm_proc.c
+++ b/linux-core/drm_proc.c
@@ -51,6 +51,10 @@ static int drm_bufs_info(char *buf, char **start, off_t offset,
 			 int request, int *eof, void *data);
 static int drm_objects_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);
@@ -70,6 +74,8 @@ static struct drm_proc_list {
 	{"queues", drm_queues_info},
 	{"bufs", drm_bufs_info},
 	{"objects", drm_objects_info},
+	{"gem_names", drm_gem_name_info},
+	{"gem_objects", drm_gem_object_info},
 #if DRM_DEBUG_CODE
 	{"vma", drm_vma_info},
 #endif
@@ -582,6 +588,79 @@ static int drm_clients_info(char *buf, char **start, off_t offset,
 	return ret;
 }
 
+struct drm_gem_name_info_data {
+	int			len;
+	char			*buf;
+	int			eof;
+};
+
+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_INFO ("name %d size %d\n", obj->name, obj->size);
+	if (nid->eof)
+		return 0;
+	
+	nid->len += sprintf (&nid->buf[nid->len],
+			     "%6d%9d%8d%9d\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));
+	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,
-- 
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