[PATCH v15 02/19] drm/etnaviv: Export drm_gem_print_info() and use it

[Sui Jingfeng <sui.jingfeng@xxxxxxxxx>]

This will make the newly implemented etnaviv_gem_object_funcs::print_info
get in use, which improves code sharing and simplifies debugfs. Achieve
better humen readability for debug log.

Use container_of_const() if 'struct etnaviv_gem_object *etnaviv_obj' is a
constant pointer.

Signed-off-by: Sui Jingfeng <sui.jingfeng@xxxxxxxxx>
---
 drivers/gpu/drm/drm_gem.c             |  1 +
 drivers/gpu/drm/etnaviv/etnaviv_gem.c | 13 +++++--------
 include/drm/drm_gem.h                 |  2 ++
 3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index d4bbc5d109c8..9c5c971c1b23 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -1160,6 +1160,7 @@ void drm_gem_print_info(struct drm_printer *p, unsigned int indent,
 	if (obj->funcs->print_info)
 		obj->funcs->print_info(p, indent, obj);
 }
+EXPORT_SYMBOL(drm_gem_print_info);
 
 int drm_gem_pin_locked(struct drm_gem_object *obj)
 {
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.c b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
index 543d881585b3..6bdf72cd9e85 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
@@ -3,6 +3,7 @@
  * Copyright (C) 2015-2018 Etnaviv Project
  */
 
+#include <drm/drm_gem.h>
 #include <drm/drm_prime.h>
 #include <linux/dma-mapping.h>
 #include <linux/shmem_fs.h>
@@ -432,15 +433,11 @@ int etnaviv_gem_wait_bo(struct etnaviv_gpu *gpu, struct drm_gem_object *obj,
 #ifdef CONFIG_DEBUG_FS
 static void etnaviv_gem_describe(struct drm_gem_object *obj, struct seq_file *m)
 {
-	struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj);
+	struct drm_printer p = drm_seq_file_printer(m);
 	struct dma_resv *robj = obj->resv;
-	unsigned long off = drm_vma_node_start(&obj->vma_node);
 	int r;
 
-	seq_printf(m, "%08x: %c %2d (%2d) %08lx %p %zd\n",
-			etnaviv_obj->flags, is_active(etnaviv_obj) ? 'A' : 'I',
-			obj->name, kref_read(&obj->refcount),
-			off, etnaviv_obj->vaddr, obj->size);
+	drm_gem_print_info(&p, 1, obj);
 
 	r = dma_resv_lock(robj, NULL);
 	if (r)
@@ -461,7 +458,7 @@ void etnaviv_gem_describe_objects(struct etnaviv_drm_private *priv,
 	list_for_each_entry(etnaviv_obj, &priv->gem_list, gem_node) {
 		struct drm_gem_object *obj = &etnaviv_obj->base;
 
-		seq_puts(m, "   ");
+		seq_printf(m, "obj[%d]:\n", count);
 		etnaviv_gem_describe(obj, m);
 		count++;
 		size += obj->size;
@@ -556,7 +553,7 @@ static void etnaviv_gem_object_info(struct drm_printer *p,
 {
 	const struct etnaviv_gem_object *etnaviv_obj;
 
-	etnaviv_obj = container_of(obj, struct etnaviv_gem_object, base);
+	etnaviv_obj = container_of_const(obj, struct etnaviv_gem_object, base);
 
 	drm_printf_indent(p, indent, "caching mode=%s\n",
 			  etnaviv_gem_obj_caching_info(etnaviv_obj->flags));
diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h
index bae4865b2101..0791566fab53 100644
--- a/include/drm/drm_gem.h
+++ b/include/drm/drm_gem.h
@@ -480,6 +480,8 @@ void drm_gem_vm_close(struct vm_area_struct *vma);
 int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size,
 		     struct vm_area_struct *vma);
 int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
+void drm_gem_print_info(struct drm_printer *p, unsigned int indent,
+			const struct drm_gem_object *obj);
 
 /**
  * drm_gem_object_get - acquire a GEM buffer object reference
-- 
2.43.0