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drm/ttm: Add common debugfs code for resource managers 

Drivers duplicate the code required to add debugfs entries for various
ttm resource managers. To fix it add common TTM resource manager debugfs
code that each driver can reuse.

Specific resource managers can overwrite
ttm_resource_manager_func::debug to get more information from those
debugfs entries.

Signed-off-by: Zack Rusin <zackr@vmware.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220412033526.369115-2-zack@kde.org
Reviewed-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Zack Rusin 2022-04-11 23:35:22 -04:00
parent 74373977d2
commit 8cd9efd1b7
2 changed files with 38 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
drivers/gpu/drm/ttm/ttm_resource.c
View File

@ -644,3 +644,37 @@ ttm_kmap_iter_linear_io_fini(struct ttm_kmap_iter_linear_io *iter_io,
ttm_mem_io_free(bdev, mem);
}
#if defined(CONFIG_DEBUG_FS)
static int ttm_resource_manager_show(struct seq_file *m, void *unused)
{
struct ttm_resource_manager *man =
(struct ttm_resource_manager *)m->private;
struct drm_printer p = drm_seq_file_printer(m);
ttm_resource_manager_debug(man, &p);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ttm_resource_manager);
#endif
/**
* ttm_resource_manager_create_debugfs - Create debugfs entry for specified
* resource manager.
* @man: The TTM resource manager for which the debugfs stats file be creates
* @parent: debugfs directory in which the file will reside
* @name: The filename to create.
*
* This function setups up a debugfs file that can be used to look
* at debug statistics of the specified ttm_resource_manager.
*/
void ttm_resource_manager_create_debugfs(struct ttm_resource_manager *man,
struct dentry * parent,
const char *name)
{
#if defined(CONFIG_DEBUG_FS)
debugfs_create_file(name, 0444, parent, man, &ttm_resource_manager_fops);
#endif
}
EXPORT_SYMBOL(ttm_resource_manager_create_debugfs);

4
include/drm/ttm/ttm_resource.h
View File

@ -381,4 +381,8 @@ ttm_kmap_iter_linear_io_init(struct ttm_kmap_iter_linear_io *iter_io,
void ttm_kmap_iter_linear_io_fini(struct ttm_kmap_iter_linear_io *iter_io,
struct ttm_device *bdev,
struct ttm_resource *mem);
void ttm_resource_manager_create_debugfs(struct ttm_resource_manager *man,
struct dentry * parent,
const char *name);
#endif