[Intel-xe] [PATCH V2 2/7] drm/xe: Interface xe drm client with fdinfo interface

[Tejas Upadhyay <tejas.upadhyay@intel.com>]

DRM core driver has introduced recently fdinfo interface to
show memory stats of individual drm client. Lets interface
xe drm client to fdinfo interface.

Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Signed-off-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
---
 drivers/gpu/drm/xe/xe_device.c     |  4 ++++
 drivers/gpu/drm/xe/xe_drm_client.c | 17 +++++++++++++++++
 drivers/gpu/drm/xe/xe_drm_client.h |  4 +++-
 3 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c
index cf59c7b74eaf..1aae352a982c 100644
--- a/drivers/gpu/drm/xe/xe_device.c
+++ b/drivers/gpu/drm/xe/xe_device.c
@@ -138,6 +138,9 @@ static const struct file_operations xe_driver_fops = {
 	.read = drm_read,
 	.compat_ioctl = drm_compat_ioctl,
 	.llseek = noop_llseek,
+#ifdef CONFIG_PROC_FS
+	.show_fdinfo = drm_show_fdinfo,
+#endif
 };
 
 static void xe_driver_release(struct drm_device *dev)
@@ -162,6 +165,7 @@ static struct drm_driver driver = {
 
 	.dumb_create = xe_bo_dumb_create,
 	.dumb_map_offset = drm_gem_ttm_dumb_map_offset,
+	.show_fdinfo = PTR_IF(IS_ENABLED(CONFIG_PROC_FS), xe_drm_client_fdinfo),
 	.release = &xe_driver_release,
 
 	.ioctls = xe_ioctls,
diff --git a/drivers/gpu/drm/xe/xe_drm_client.c b/drivers/gpu/drm/xe/xe_drm_client.c
index ea7993338076..b5dc024b5dd0 100644
--- a/drivers/gpu/drm/xe/xe_drm_client.c
+++ b/drivers/gpu/drm/xe/xe_drm_client.c
@@ -50,3 +50,20 @@ void __xe_drm_client_free(struct kref *kref)
 
 	kfree(client);
 }
+
+#ifdef CONFIG_PROC_FS
+/**
+ * xe_drm_client_fdinfo() - Callback for fdinfo interface
+ * @p: The drm_printer ptr
+ * @file: The drm_file ptr
+ *
+ * This is callabck for drm fdinfo interface. Register this callback
+ * in drm driver ops for show_fdinfo.
+ *
+ * Return: void
+ */
+void xe_drm_client_fdinfo(struct drm_printer *p, struct drm_file *file)
+{
+	/* show_meminfo() will be developed here */
+}
+#endif
diff --git a/drivers/gpu/drm/xe/xe_drm_client.h b/drivers/gpu/drm/xe/xe_drm_client.h
index be097cdf5d12..dbe3a083c9df 100644
--- a/drivers/gpu/drm/xe/xe_drm_client.h
+++ b/drivers/gpu/drm/xe/xe_drm_client.h
@@ -39,5 +39,7 @@ struct xe_drm_client *xe_drm_client_alloc(void);
 static inline struct xe_drm_client *
 xe_drm_client_get(struct xe_drm_client *client);
 static inline void xe_drm_client_put(struct xe_drm_client *client);
-
+#ifdef CONFIG_PROC_FS
+void xe_drm_client_fdinfo(struct drm_printer *p, struct drm_file *file);
+#endif
 #endif
-- 
2.25.1