[PATCH] drm/debugfs: add client-id to the debugfs entry

[Sunil Khatri]

pid is not always the right choice for fd to track
the caller and hence adding drm client-id to the
print which is unique for a drm client and can be
used by driver in debugging

One of the use is to further enhance debugging for
amdgpu driver based on client-id.

Signed-off-by: Sunil Khatri <sunil.khatri at amd.com>
---
 drivers/gpu/drm/drm_debugfs.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 6b2178864c7e..2d43bda82887 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -77,14 +77,15 @@ static int drm_clients_info(struct seq_file *m, void *data)
 	kuid_t uid;
 
 	seq_printf(m,
-		   "%20s %5s %3s master a %5s %10s %*s\n",
+		   "%20s %5s %3s master a %5s %10s %*s %5s\n",
 		   "command",
 		   "tgid",
 		   "dev",
 		   "uid",
 		   "magic",
 		   DRM_CLIENT_NAME_MAX_LEN,
-		   "name");
+		   "name",
+		   "client-id");
 
 	/* dev->filelist is sorted youngest first, but we want to present
 	 * oldest first (i.e. kernel, servers, clients), so walk backwardss.
@@ -100,7 +101,7 @@ static int drm_clients_info(struct seq_file *m, void *data)
 		pid = rcu_dereference(priv->pid);
 		task = pid_task(pid, PIDTYPE_TGID);
 		uid = task ? __task_cred(task)->euid : GLOBAL_ROOT_UID;
-		seq_printf(m, "%20s %5d %3d   %c    %c %5d %10u %*s\n",
+		seq_printf(m, "%20s %5d %3d   %c    %c %5d %10u %*s %5llu\n",
 			   task ? task->comm : "<unknown>",
 			   pid_vnr(pid),
 			   priv->minor->index,
@@ -109,7 +110,7 @@ static int drm_clients_info(struct seq_file *m, void *data)
 			   from_kuid_munged(seq_user_ns(m), uid),
 			   priv->magic,
 			   DRM_CLIENT_NAME_MAX_LEN,
-			   priv->client_name ? priv->client_name : "<unset>");
+			   priv->client_name ? priv->client_name : "<unset>", priv->client_id);
 		rcu_read_unlock();
 		mutex_unlock(&priv->client_name_lock);
 	}
-- 
2.34.1