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
...@@ -469,6 +469,26 @@ void drm_mm_takedown(struct drm_mm * mm) ...@@ -469,6 +469,26 @@ void drm_mm_takedown(struct drm_mm * mm)
} }
EXPORT_SYMBOL(drm_mm_takedown); 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) #if defined(CONFIG_DEBUG_FS)
int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm) int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm)
{ {
......
...@@ -133,6 +133,7 @@ static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block) ...@@ -133,6 +133,7 @@ static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block)
return block->mm; return block->mm;
} }
extern void drm_mm_debug_table(struct drm_mm *mm, const char *prefix);
#ifdef CONFIG_DEBUG_FS #ifdef CONFIG_DEBUG_FS
int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm); int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm);
#endif #endif
......
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