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.
This contains the i915 hooks rewrite as well, to make bisectability better.
Signed-off-by: Ben Gamari <bgamari@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 1441655..c26ee08 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -46,9 +46,11 @@
* OTHER DEALINGS IN THE SOFTWARE.
*/
+#include <linux/debugfs.h>
#include "drmP.h"
#include "drm_core.h"
+
static int drm_version(struct drm_device *dev, void *data,
struct drm_file *file_priv);
@@ -178,7 +180,7 @@
/* Clear AGP information */
if (drm_core_has_AGP(dev) && dev->agp &&
- !drm_core_check_feature(dev, DRIVER_MODESET)) {
+ !drm_core_check_feature(dev, DRIVER_MODESET)) {
struct drm_agp_mem *entry, *tempe;
/* Remove AGP resources, but leave dev->agp
@@ -335,6 +337,13 @@
goto err_p3;
}
+ drm_debugfs_root = debugfs_create_dir("dri", NULL);
+ if (!drm_debugfs_root) {
+ DRM_ERROR("Cannot create /debugfs/dri\n");
+ ret = -1;
+ goto err_p3;
+ }
+
drm_mem_init();
DRM_INFO("Initialized %s %d.%d.%d %s\n",
@@ -353,6 +362,7 @@
static void __exit drm_core_exit(void)
{
remove_proc_entry("dri", NULL);
+ debugfs_remove(drm_debugfs_root);
drm_sysfs_destroy();
unregister_chrdev(DRM_MAJOR, "drm");