drm/vram: add vram-mm debugfs file (9286766b) · Commits · 戴 / test

drivers/gpu/drm/drm_vram_mm_helper.c

+44 −0

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		// SPDX-License-Identifier: GPL-2.0-or-later

		#include <drm/drm_debugfs.h>
		#include <drm/drm_device.h>
		#include <drm/drm_file.h>
		#include <drm/drm_gem_ttm_helper.h>
		#include <drm/drm_vram_mm_helper.h>

		#include <drm/ttm/ttm_page_alloc.h>
		@@ -160,6 +162,48 @@ static struct ttm_bo_driver bo_driver = {
		* struct drm_vram_mm
		*/

		#if defined(CONFIG_DEBUG_FS)
		static int drm_vram_mm_debugfs(struct seq_file m, void data)
		{
		struct drm_info_node node = (struct drm_info_node ) m->private;
		struct drm_vram_mm *vmm = node->minor->dev->vram_mm;
		struct drm_mm *mm = vmm->bdev.man[TTM_PL_VRAM].priv;
		struct ttm_bo_global *glob = vmm->bdev.glob;
		struct drm_printer p = drm_seq_file_printer(m);

		spin_lock(&glob->lru_lock);
		drm_mm_print(mm, &p);
		spin_unlock(&glob->lru_lock);
		return 0;
		}

		static const struct drm_info_list drm_vram_mm_debugfs_list[] = {
		{ "vram-mm", drm_vram_mm_debugfs, 0, NULL },
		};
		#endif

		/**
		* drm_vram_mm_debugfs_init() - Register VRAM MM debugfs file.
		*
		* @minor: drm minor device.
		*
		* Returns:
		* 0 on success, or
		* a negative error code otherwise.
		*/
		int drm_vram_mm_debugfs_init(struct drm_minor *minor)
		{
		int ret = 0;

		#if defined(CONFIG_DEBUG_FS)
		ret = drm_debugfs_create_files(drm_vram_mm_debugfs_list,
		ARRAY_SIZE(drm_vram_mm_debugfs_list),
		minor->debugfs_root, minor);
		#endif
		return ret;
		}
		EXPORT_SYMBOL(drm_vram_mm_debugfs_init);

		/**
		* drm_vram_mm_init() - Initialize an instance of VRAM MM.
		* @vmm: the VRAM MM instance to initialize

+1 −0

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		@@ -140,6 +140,7 @@ int drm_gem_vram_driver_dumb_mmap_offset(struct drm_file *file,
		* &struct drm_driver with default functions.
		*/
		#define DRM_GEM_VRAM_DRIVER \
		.debugfs_init = drm_vram_mm_debugfs_init, \
		.dumb_create = drm_gem_vram_driver_dumb_create, \
		.dumb_map_offset = drm_gem_vram_driver_dumb_mmap_offset, \
		.gem_prime_mmap = drm_gem_prime_mmap

+1 −0

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		@@ -64,6 +64,7 @@ static inline struct drm_vram_mm *drm_vram_mm_of_bdev(
		return container_of(bdev, struct drm_vram_mm, bdev);
		}

		int drm_vram_mm_debugfs_init(struct drm_minor *minor);
		int drm_vram_mm_init(struct drm_vram_mm vmm, struct drm_device dev,
		uint64_t vram_base, size_t vram_size,
		const struct drm_vram_mm_funcs *funcs);