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Commit 99d7e48e authored by Jerome Glisse's avatar Jerome Glisse Committed by Dave Airlie
Browse files

drm: Add memory manager debug function 



drm_mm_debug_table will print the memory manager state
in table allowing to give a snapshot of the manager at
given point in time. Usefull for debugging.

Signed-off-by: default avatarJerome Glisse <jglisse@redhat.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 550e2d92

drivers/gpu/drm/drm_mm.c

+20 −0
Original line number Diff line number Diff line
@@ -469,6 +469,26 @@ void drm_mm_takedown(struct drm_mm * mm) 
}

EXPORT_SYMBOL(drm_mm_takedown);



void drm_mm_debug_table(struct drm_mm *mm, const char *prefix)

{

	struct drm_mm_node *entry;

	int total_used = 0, total_free = 0, total = 0;



	list_for_each_entry(entry, &mm->ml_entry, ml_entry) {

		printk(KERN_DEBUG "%s 0x%08lx-0x%08lx: %8ld: %s\n",

			prefix, entry->start, entry->start + entry->size,

			entry->size, entry->free ? "free" : "used");

		total += entry->size;

		if (entry->free)

			total_free += entry->size;

		else

			total_used += entry->size;

	}

	printk(KERN_DEBUG "%s total: %d, used %d free %d\n", prefix, total,

		total_used, total_free);

}

EXPORT_SYMBOL(drm_mm_debug_table);



#if defined(CONFIG_DEBUG_FS)

int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm)

{

include/drm/drm_mm.h

+1 −0
Original line number Diff line number Diff line
@@ -133,6 +133,7 @@ static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block) 
	return block->mm;

}



extern void drm_mm_debug_table(struct drm_mm *mm, const char *prefix);

#ifdef CONFIG_DEBUG_FS

int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm);

#endif