debugfs: Fix terminology inconsistency of dir name to mount debugfs filesystem.

Many developers use "/debug/" or "/debugfs/" or "/sys/kernel/debug/"
directory name to mount debugfs filesystem for ftrace according to
./Documentation/tracers/ftrace.txt file.

And, three directory names(ex:/debug/, /debugfs/, /sys/kernel/debug/) is
existed in kernel source like ftrace, DRM, Wireless, Documentation,
Network[sky2]files to mount debugfs filesystem.

debugfs means debug filesystem for debugging easy to use by greg kroah
hartman. "/sys/kernel/debug/" name is suitable as directory name
of debugfs filesystem.
- debugfs related reference: http://lwn.net/Articles/334546/

Fix inconsistency of directory name to mount debugfs filesystem.

* From Steven Rostedt
  - find_debugfs() and tracing_files() in this patch.

Signed-off-by: GeunSik Lim <geunsik.lim@samsung.com>
Acked-by     : Inaky Perez-Gonzalez <inaky@linux.intel.com>
Reviewed-by  : Steven Rostedt <rostedt@goodmis.org>
Reviewed-by  : James Smart <james.smart@emulex.com>
CC: Jiri Kosina <trivial@kernel.org>
CC: David Airlie <airlied@linux.ie>
CC: Peter Osterlund <petero2@telia.com>
CC: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
CC: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
CC: Masami Hiramatsu <mhiramat@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

3 files changed, 8 insertions, 8 deletions

diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index c77c6c6d9d2c..6ce0e2667a85 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -105,7 +105,7 @@ int drm_debugfs_create_files(struct drm_info_list *files, int count,
                 ent = debugfs_create_file(files[i].name, S_IFREG | S_IRUGO,
                                           root, tmp, &drm_debugfs_fops);
                 if (!ent) {
-                        DRM_ERROR("Cannot create /debugfs/dri/%s/%s\n",
+                        DRM_ERROR("Cannot create /sys/kernel/debug/dri/%s/%s\n",
                                   name, files[i].name);
                         drm_free(tmp, sizeof(struct drm_info_node),
                                  _DRM_DRIVER);
@@ -133,9 +133,9 @@ EXPORT_SYMBOL(drm_debugfs_create_files);
  * \param minor device minor number
  * \param root DRI debugfs dir entry.
  *
- * Create the DRI debugfs root entry "/debugfs/dri", the device debugfs root entry
- * "/debugfs/dri/%minor%/", and each entry in debugfs_list as
- * "/debugfs/dri/%minor%/%name%".
+ * Create the DRI debugfs root entry "/sys/kernel/debug/dri", the device debugfs root entry
+ * "/sys/kernel/debug/dri/%minor%/", and each entry in debugfs_list as
+ * "/sys/kernel/debug/dri/%minor%/%name%".
  */
 int drm_debugfs_init(struct drm_minor *minor, int minor_id,
                      struct dentry *root)
@@ -148,7 +148,7 @@ int drm_debugfs_init(struct drm_minor *minor, int minor_id,
         sprintf(name, "%d", minor_id);
         minor->debugfs_root = debugfs_create_dir(name, root);
         if (!minor->debugfs_root) {
-                DRM_ERROR("Cannot create /debugfs/dri/%s\n", name);
+                DRM_ERROR("Cannot create /sys/kernel/debug/dri/%s\n", name);
                 return -1;
         }
 
@@ -165,7 +165,7 @@ int drm_debugfs_init(struct drm_minor *minor, int minor_id,
                 ret = dev->driver->debugfs_init(minor);
                 if (ret) {
                         DRM_ERROR("DRM: Driver failed to initialize "
-                                  "/debugfs/dri.\n");
+                                  "/sys/kernel/debug/dri.\n");
                         return ret;
                 }
         }
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 019b7c578236..1bf7efd8d334 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -339,7 +339,7 @@ static int __init drm_core_init(void)
 
         drm_debugfs_root = debugfs_create_dir("dri", NULL);
         if (!drm_debugfs_root) {
-                DRM_ERROR("Cannot create /debugfs/dri\n");
+                DRM_ERROR("Cannot create /sys/kernel/debug/dri\n");
                 ret = -1;
                 goto err_p3;
         }
diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
index 89050684fe0d..387a8de1bc7e 100644
--- a/drivers/gpu/drm/drm_stub.c
+++ b/drivers/gpu/drm/drm_stub.c
@@ -343,7 +343,7 @@ static int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int t
 #if defined(CONFIG_DEBUG_FS)
         ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root);
         if (ret) {
-                DRM_ERROR("DRM: Failed to initialize /debugfs/dri.\n");
+                DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
                 goto err_g2;
         }
 #endif