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drm/mm: fix debug table BUG

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commit 3a359f0b21
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Sat Apr 20 12:08:11 2013 +0200

    drm/mm: fix dump table BUG

I've failed to fix both instances of the regression introduced in

commit 9e8944ab56
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Thu Nov 15 11:32:17 2012 +0000

   drm: Introduce an iterator over holes in the drm_mm range manager

Patch this up in the same way by extracting the hole debug logic
into it's own function, since that'll also clarify the logic a bit.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Daniel Vetter 2013-07-01 22:01:02 +02:00 committed by Dave Airlie
parent 4a88f73f14
commit 2c54b13357
1 changed files with 20 additions and 19 deletions
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39
drivers/gpu/drm/drm_mm.c
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@ -714,36 +714,37 @@ void drm_mm_takedown(struct drm_mm * mm)
}
EXPORT_SYMBOL(drm_mm_takedown);
static unsigned long drm_mm_debug_hole(struct drm_mm_node *entry,
const char *prefix)
{
unsigned long hole_start, hole_end, hole_size;
if (entry->hole_follows) {
hole_start = drm_mm_hole_node_start(entry);
hole_end = drm_mm_hole_node_end(entry);
hole_size = hole_end - hole_start;
printk(KERN_DEBUG "%s 0x%08lx-0x%08lx: %8lu: free\n",
prefix, hole_start, hole_end,
hole_size);
return hole_size;
}
return 0;
}
void drm_mm_debug_table(struct drm_mm *mm, const char *prefix)
{
struct drm_mm_node *entry;
unsigned long total_used = 0, total_free = 0, total = 0;
unsigned long hole_start, hole_end, hole_size;
hole_start = drm_mm_hole_node_start(&mm->head_node);
hole_end = drm_mm_hole_node_end(&mm->head_node);
hole_size = hole_end - hole_start;
if (hole_size)
printk(KERN_DEBUG "%s 0x%08lx-0x%08lx: %8lu: free\n",
prefix, hole_start, hole_end,
hole_size);
total_free += hole_size;
total_free += drm_mm_debug_hole(&mm->head_node, prefix);
drm_mm_for_each_node(entry, mm) {
printk(KERN_DEBUG "%s 0x%08lx-0x%08lx: %8lu: used\n",
prefix, entry->start, entry->start + entry->size,
entry->size);
total_used += entry->size;
if (entry->hole_follows) {
hole_start = drm_mm_hole_node_start(entry);
hole_end = drm_mm_hole_node_end(entry);
hole_size = hole_end - hole_start;
printk(KERN_DEBUG "%s 0x%08lx-0x%08lx: %8lu: free\n",
prefix, hole_start, hole_end,
hole_size);
total_free += hole_size;
}
total_free += drm_mm_debug_hole(entry, prefix);
}
total = total_free + total_used;